How many picograms are in 1 Megagram?

Answers

Answer 1
1 x 10^18 picograms
I hope it helps you

Related Questions

The very common mineral shown in this photograph is commonly a pink- to cream-colored mineral with wavy, light-colored lines. it does not effervesce. what mineral is it?

Answers

The very common mineral shown in the figure that is referred in this problem that is commonly a pink- to cream-colored mineral with wavy, light-colored lines and does not effervesce would be feldspar. It make up about 41 percent weight of the Earth's crust. It is a group of rocks that contains tectosilicate compounds.

A new element is discovered that is very unstable and highly reactive, and it likes to lose its one valence electron. in what group should this element be placed in? explain.

Answers

In order to achieve the Octet rule and stability, the atom will lose or gain electron so that only eight electrons will be in the shell. These elements are placed in the group 1 or A of the periodic table. The group is comprised of the hydrogen and the alkali metals. 

Write 266000 in scientific notation

Answers

266000 = 2.66 x 10^5

hope this helps
Yeah that's correct I got that too

If a sample containing 2.50 ml of nitroglycerin (density=1.592g/ml) is detonated, how many total moles of gas are produced?

Answers

0.127 moles The formula for nitroglycerin is C3H5N3O9 so let's first calculate the molar mass of it. Carbon = 12.0107 Nitrogen = 14.0067 Hydrogen = 1.00794 Oxygen = 15.999 C3H5N3O9 = 3 * 12.0107 + 5 * 1.00794 + 3 * 14.0067 + 9 * 15.999 = 227.0829 Now calculate the number of moles of nitroglycerin you have by dividing the mass by the molar mass 2.50 ml * 1.592 g/ml / 227.0829 g/mol = 0.017527 mol The balanced formula for when nitroglycerin explodes is 4 C3H5N3O9 => 12 CO2 + 10 H2O + O2 + 6 N2 Since all of the products are gasses at the time of the explosion, there is a total of 29 moles of gas produced for every 4 moles of nitroglycerin Now multiply the number of moles of nitroglycerin by 29/4 0.017527 mol * 29/4 = 0.12707075 moles Round to 3 significant figures, giving 0.127 moles

Which two body systems contribute to acid-base balance of blood?

Answers

The two body systems that regulate the pH of the blood are the lungs and the kidneys. The lungs regulate the pH through breathing out the carbon dioxide. Since CO₂ is acidic, when it is accumulated in the body, the pH of blood increases. Hence, the lungs control the speed and depth of breathing. The kidneys regulate pH by filtering out the salts in our blood which makes the blood also acidic. The filtered waste are excreted out of the body as urine.

Final answer:

The respiratory and renal systems are crucial in maintaining the acid-base balance of blood, by managing the levels of CO2 and bicarbonate, respectively.

Explanation:

The two body systems that contribute to the acid-base balance of blood are the respiratory system and the renal or excretory system. The primary blood buffer system is carbonic acid/hydrogen carbonate, which aids in maintaining the blood pH within a narrow range. The respiratory system regulates blood pH by exhaling carbon dioxide (CO2), while the renal system adjusts blood pH through the excretion of hydrogen ions (H+) and the conservation of bicarbonate (HCO3-). These two systems play a vital role in the acid-base homeostasis by removing excess acids or bases from the body.

How do chemical weathering and the formation of biochemical sediment remove carbon from the atmosphere and store it in the geosphere?

Answers

Final answer:

Chemical weathering and the formation of biochemical sediment remove carbon from the atmosphere by releasing carbon dioxide through the breakdown of rocks. This carbon dioxide can then be stored in the geosphere as biochemical sediments.

Explanation:

Chemical weathering and the formation of biochemical sediment play a crucial role in removing carbon from the atmosphere and storing it in the geosphere. Chemical weathering refers to the breakdown of rocks and minerals through chemical reactions, which releases carbon dioxide into the atmosphere. This carbon dioxide can then be dissolved in water and can react with other compounds to form biochemical sediments, such as calcium carbonate. These sediments eventually become part of the geosphere, storing carbon for long periods of time.

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Please help! I’m on my last attempt

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First line: The atomic number is the whole number on the periodic table so atomic number 35 means the element is bromine. Thus the element symbol is Br. The atomic number is also the number of protons in the isotope so the number of protons is 35. The mass number is the sum of protons and neutrons in the isotope so the mass number is 35+46 or 81. The mass number gives you the top left number on the nuclear symbol (it will look the same as the one below it except the 79 is an 81). Lastly, the number of electrons is equal to the number of protons in a neutral atom so 35 electrons.

Ions how are ions made from neutral atoms worksheet answers

Answers

Final answer:

Ions are created when neutral atoms either lose or gain electrons, forming cations and anions, respectively. The periodic table helps predict the charges of ions depending on their group, where alkali metals form +1 cations, alkaline earth metals form +2 cations, and halogens form -1 anions. The formation of ionic compounds involves the combination of these oppositely charged ions to achieve electrical neutrality.

Explanation:

Ions are formed when atoms gain or lose electrons. When a neutral atom loses one or more electrons from its valence shell, it becomes a cation (a positive ion). Conversely, when it gains one or more electrons in its valence shell, it becomes an anion (a negative ion).

Charges of Ions and Ionic Compounds:

The periodic table can be a tool for predicting the charges of many ions based on their group. For instance, alkali metals form +1 ions, while alkaline earth metals form +2 ions. Halogens typically form -1 ions. Ionic compounds consist of these positive and negative ions in a ratio that balances their total charges, resulting in an electrically neutral compound.

Electron Configurations and Ion Charges:

It's important to note that ions only form through the movement of electrons, not protons. For elements within the same group on the periodic table, the number of valence electrons determines the common ion charge. Elements will either reach a stable electron configuration by losing or gaining electrons to form ions.

A 2.07-g sample of an iron–aluminum alloy (ferroaluminum) is dissolved in excess HCl(aq) to produce 0.100 g H2(g).

Fe(s)+2HCl(aq)→FeCl2(aq)+H2(g)
2Al(s)+6HCl(aq)→2AlCl3(aq)+3H2(g).

What is the percent composition, by mass, of the ferroaluminum?

Answers

Final answer:

The percent composition of Fe in the ferroaluminum alloy is approximately 33.82%.

Explanation:

To find the percent composition of the ferroaluminum, we need to determine the mass of iron and aluminum in the alloy. Based on the balanced chemical equations given, 1 mole of Fe is produced for every 2.07 g of the alloy, and 3 moles of H2 are produced for every 2.07 g of the alloy. From the molar mass of Fe (55.85 g/mol) and H2 (2.02 g/mol), we can calculate the mass of Fe and H2 produced. So, the percent composition of Fe in the alloy is:


mass of Fe / mass of ferroaluminum × 100%


= (0.70 g / 2.07 g) × 100%


= 33.82%


Therefore, the percent composition of Fe in the ferroaluminum is approximately 33.82%.

Iki indicator tests for the presence of which substance? benedict's reagent tests for the presence of which substance?

Answers

IKI solution looks for starches, while Benedict's looks for sugars. IKI is iodine potassium iodide, which turns a dark blue when in the presence of amylase. Benedict's reagent is often used to look for reducing sugars, such as glucose, and turns colors ranging from a light green to a dark-red or brown with a cuprous precipitate in the presence of higher quantities of sugars in the tested solution.

Iki also known as Lugol's solution, is an indicator used to test for the presence of starch. Benedict's reagent is used to test for the presence of reducing sugars, such as glucose and fructose

Lugol's solution is a yellow-brown solution that turns blue-black in the presence of starch.

Benedict's reagent is a clear blue solution that changes color to green, yellow, orange, or red, depending on the amount of reducing sugar present. Benedict's test is commonly used in the laboratory to detect the presence of reducing sugars in various substances.

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Which interaction is a direct result of chemical weathering?



 
A.
root pry


 
B.
ice wedging


 
C.
wave action on beaches


 
D.
rust forming on rocks

Answers

Chemical weathering is the erosion of rocks, buildings etc.d sounds like a very good answer

The interaction which is a direct result of chemical weathering is rust

forming on rocks.

What is Chemical weathering?

Chemical weathering involves the interaction of rocks with chemical

substances such as minerals. In this process, the composition of the rocks

are usually changed.

Rusts forms on rocks during this process which hastens the breakdown of

rocks into tiny particles.

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which term best describes the rate at which glacial erosion takes place

Answers

Glacial erosion is the process by which a glacial flows over the land, picking up rocks. 
Gacial erosion is the process by which a gacial flows over the land,picking up rocks. 

A 0.100-g sample of your favorite candy is burned in a calorimeter that contains 1.00 kg of water initially at 21.0 ∘C. After the candy is burned, the water temperature is 34.5 ∘C. How many Calories are there per gram of your candy?

Answers

Answer: 565.245kJ
To answer this question, you need to know how much water heat capacity which was 4.187 kJ/kg K. First, we need to find the calorie absorbed by water. Since the sample is 1kg, the initial temperature is 21 ∘C and final temperature is 34.5 ∘C then the calculation would be:

Energy= (Final temp - initial temp) * heat capacity * mass
Energy = (34.5-21) ∘C * 4.187 * kJ/kg K * 1kg= 56.5245 kJ

The energy is made from 0.1 gram, then for 1 gram of energy it should be:
1 gram/ 0.1gram x 56.5245 kJ= 565.245kJ

For the reaction 6 Li + N2 → 2 Li3N , what is the maximum amount of Li3N (34.8297 g/mol) which could be formed from 14.18 mol (6.941 g/mol) of Li and 16.37 mol of N2 (28.0134 g/mol)? Answer in units of mol.

Answers

Moles Li = 3.50 g / 6.941 g/mol= 0.504
the ratio between Li and N2 is 6 : 1
moles N2 required = 0.504 /6=0.0840
we have 3.50 g / 28.0134 g/mol=0.125 moles of N2 so N2 is in excess
the ratio between Li and Li3N is 6 : 2
moles Li3N = 0.504 x 2 /6=0.168
mass Li3N = 0.168 mol x 34.8297 g/mol=5.85 g
Final answer:

The reaction is limited by the amount of Lithium available. With the given amount of Lithium and Nitrogen gas, the maximum amount of Li3N that could be produced is 4.726 moles.

Explanation:

The question is looking for the maximum amount of Li3N that can be produced from given amounts of Li and N2. According to the chemical equation 6 Li + N2 → 2 Li3N, six moles of Li react with one mole of N2 to produce two moles of Li3N. Hence, the Li:N2:Li3N mole ratio is 6:1:2. If you have 14.18 moles of Li and 16.37 moles of N2, the reaction is limited by Li because it would require 16.37 moles of N2 to entirely consume 98.22 moles of Li (16.37 moles * 6). But since you only have 14.18 moles of Li, this will limit the formation of Li3N. Therefore, the maximum amount of Li3N that could be produced is 2/6 * 14.18 moles, which equals to 4.726 moles of Li3N.

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The box holds 70 cm3 of water. Water has a density of 10 g/cm³. What is the mass of the water

Answers

Volume of water in the box = 70 cm³
Density = 10 g/cm³
Mass of water = ?
By using the following formula we can calculate mass of the water; 
Density = Mass ÷ Volume
Now putting the values;
10 gcm³ = Mass ÷ 70cm³
Mass = 10 x 70
Mass = 700g

What volume would 4 moles of gas occupy at stp? do this without a calculator. you may need to use longhand calculations. the question is designed to tolerate reasonable rounding?

Answers

v.o.g = moles × s. t . p
= 4 × 22.4
22.4
4
= 89 .6

OR

split it up; what you need to find is 22.4 × 4
So 22 x 4 = 88
0.4 × 4 = 1.6
88 + 1.6 = 89.6

Each of the diagrams below shows an electrically neutral atom. fill in the missing number of protons (n) neutrons (and), electrons (e), and atomic mass (m). then complete the questions in the space below

Answers

What is the diagram?

A scientist has discovered a new molecular compound that is a long chain of 26 carbons bonded together, with a methyl group on one end and an acid group on the other end of the molecule. the compound does not contain any nitrogen or sulfur atoms. based on this information, the compound is a(n) _____.

Answers

The compound described is a fatty acid with a chain of 26 carbons, known as hexacosanoic acid, unless there are unsaturations not mentioned in the question.

Based on the information provided, the compound with a long chain of 26 carbons, a methyl group on one end, and an acid group on the other end, and without any nitrogen or sulfur atoms, can be regarded as a fatty acid. Fatty acids are carboxylic acids with long hydrocarbon chains. With 26 carbons, this compound can be considered a type of saturated or unsaturated fatty acid, depending on whether there are any double bonds in the hydrocarbon chain. The methyl group (CH3) indicates the end of the hydrocarbon chain, which is known in organic chemistry as the omega (ω) end. The acid group is the carboxylic acid functional group (COOH) at the other end of the molecule. Since the longest chain in this question is 26 carbons in length, with no double bonds mentioned, we might name it using the prefix for 26 carbons, which would be 'hexacos', followed by 'anoic acid' for the acid group, resulting in hexacosanoic acid. However, without more details on the nature of the hydrocarbon chain (specifically, its saturation), this nomenclature could change.

Assume that 50.0 cal of heat is applied to a 15 g sample of sulfur at 20°C. What is the final temperature of the sample if the specific heat of sulfur is 0.175 cal/(g • °C)?

Answers

Heat gained or absorbed in a system can be calculated by multiplying the given mass to the specific heat capacity of the substance and the temperature difference. It is expressed as follows:

Heat = mC(T2-T1)
50.0 cal = 15 g (0.175 cal/g-C) (T2-T1)
T2-T1 = 19.05 C
T2 = 19.05 + 20
T2 = 39.05 C

100 ml of soft drink A contains 75g of sugar and weighs 110g. calculate density

Answers

i dont know the answer to this 

The density of soft drink A is indeed 0.35 g/ml.

Given:

Mass of the soft drink (including sugar) = 110 g

The volume of the soft drink = 100 ml

Mass of sugar = 75 g

First, we need to find the mass of just the liquid (excluding the sugar), then we can calculate the density.

Mass of liquid = Total mass of soft drink - Mass of sugar

= 110  - 75

= 35 g

Now we can calculate the density:

Density = Mass ÷ Volume

Density = 35 ÷ 100

Density = 0.35 g/ml

The density of soft drink A is indeed 0.35 g/ml.

If 3.0 g of aluminum and 6.0 g of bromine react to form AlBr3, how many grams of product would theoretically be produced? How many grams of each reagent would remain at the end of this reaction?
What mass (in grams) of product would be collected if the reaction above proceeded in 72% yield?

Answers

First, we determine the moles of aluminum and bromine present using their atomic masses and given masses:
moles = mass / atomic mass

Aluminum:
3 / 27 = 0.11 mole

Bromine:
6 / 80 = 0.075

The molar ratio of bromine to aluminum in the product is 3 :  1, so the moles of aluminum that will be needed are:
0.075 / 3 = 0.025

So, 0.025 moles of product will be formed as the reaction is limited due to bromine. This means the mass of product will be:

Mass = moles * Mr
Mass = 0.025 * 207
Mass = 5.18 grams of product

The remaining reagents will be:
Br - 0 grams as all will react
Al - (0.11 - 0.025) * 27 = 2.30 grams as it is in excess

If the reaction was to go to 72% yield, the mass formed would be 72% of the mass formed when the reaction completes. So:
Mass = 0.72 * 5.18
Mass = 3.73 grams

Final answer:

To calculate the amount of AlBr3 produced from 3.0 g of Al and 6.0 g of Br2, first, the limiting reactant is determined, which is Al. The theoretical yield of AlBr3 is 29.61 g, with no bromine remaining and some aluminum unreacted. For a 72% yield, 21.3192 g of AlBr3 would be collected.

Explanation:

To calculate the theoretical yield of AlBr3 produced from 3.0 g of aluminum (Al) and 6.0 g of bromine (Br2), first, we need to determine the limiting reactant. The balanced chemical equation for the reaction is:

2 Al + 3 Br2 → 2 AlBr3

Using molar masses (Al = 26.98 g/mol, Br2 = 159.808 g/mol), we calculate the moles of each reactant:

Al: 3.0 g / 26.98 g/mol = 0.111 moles

Br2: 6.0 g / 159.808 g/mol = 0.0375 moles

Based on the stoichiometry of the equation, 2 moles of Al react with 3 moles of Br2, making aluminum the limiting reactant.

The theoretical yield of AlBr3 can be calculated using the molar ratio from the balanced equation, from which 0.111 moles of Al would produce 0.111 moles of AlBr3. The molar mass of AlBr3 (266.693 g/mol) gives us a mass of 29.61 g.

No bromine would remain as all of it reacts, but some aluminum will remain unreacted.

For a 72% yield, the actual yield of AlBr3 = theoretical yield × percentage yield = 29.61 g × 0.72 = 21.3192 g.

The number of atoms in 8.93 g of zinc ?

Answers

Zinc has a molar mass of about 65.38 g/mol. So we calculate the number of moles first:

moles Zinc = 8.93 g / (65.38 g/mol) = 0.1366 mol

 

We can calculate for the number of atoms using Avogadros number.

atoms Zinc = 0.1366 mol * 6.022 x 10^23 atoms / mol

atoms Zinc = 8.23 x 10^22 atoms

What is a substance that contains only a single type of atom

Answers

A substance that contains only a single type of atom is Hydrogen gas

The main reasons why h2co has a higher vapor pressure at a given temperature when compared to ch3oh is that h2co

Answers

You know that each carbon atom can take as much as 4 bonds with other elements. A hydrogen can only take one bond, while an oxygen can take 2. Thus, the chemical formula of H₂CO may be written as H₂C=O which is acetaldehyde. Acetaldehyde is an aldehyde. It has a higher vapor pressure because aldehydes have much stronger bonds than hydrogen bonds in alcohols. Hence, it would need a lot energy, thus higher vapor pressure, to break the bonds of an aldehyde than it would for an alcohol.

which element on the periodic table contains 5 valence electrons and is a metalloid

Answers

The P block is the element.

An atom contains one proton, one electron, and one neutron. Which two partials are most similar in mass?

Answers

The two particles that are most similar in mass are THE PROTON AND THE NEUTRON.
The proton and the neutron are found in the nucleus of the atom and they have similar mass. Proton has the mass of 1.673*10^-27 while neutron has the mass of 1.675*10^-27.

The molecular mass of the compound is 90 amu. What is the molecular formula for C2H5O?

Answers

First let us get the molecular mass of the compound C2H5O.

C has molar mass of 12 amu, H is 1 amu, while O is 16 amu, therefore:

C2H5O = 12 amu * 2 + 1 amu * 5 + 16 amu = 45 amu

So to get 90 amu, simply double all the elements, therefore:

 

C4H10O2

Let us assume that the given formula of elements is empirical formula where elements have simplest whole number ratio

The empirical mass =  2 X atomic mass of carbon + 5 X atomic mass of hydrogen + at mass of O

The empirical mass = 2 X 12 + 5 + 16 = 45

The ratio of molecular mass and empirical mass = 90 / 45 = 2

Molecular formula is obtained by multiplying the empirical formula with this ratio / factor

molecular formula = 2 X (C2H5O) = C4H10O2

Which must be the same when comparing 1 mol of oxygen gas, O2, with 1 mol of carbon monoxide gas, CO?

A. the mass

B. the volume

C. the number of molecules

D. the number of oxygen atoms

Answers

A mole is a rather unusual unit of measurement. It is defined by a specific number of particles, molecules, atoms, or any other unit. 
That number happens to be 6.022×10²³. 
When we talk about a mole of water, then, we refer to 6.022×10²³ molecules of water. 

Comparing 1 mole of 02 with 1 mole of CO:
This means means that both quantities will have the same number of molecules. The answer is C.

It may be tempting to select D, since it relates to the number of atoms rather than mass or volume, and moles are related to this idea. However, keep in mind that one mole of O2 will actually have twice as much oxygen atoms as one mole of CO, since there are two oxygen atoms per O2 molecule and only 1 oxygen atom per CO molecule.

What volume (in milliliters) of oxygen gas is required to react with 4.03 g of Mg at STP

Answers

Answer: 3808 ml

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.

Standard condition of temperature (STP)  is 273 K and atmospheric pressure is 1 atm respectively.  

To calculate the moles, we use the equation:

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}=\frac{4.03}{24}=0.17moles[/tex]

[tex]2Mg+O_2\rightarrow 2MgO[/tex]

2 moles of magnesium react with= [tex[2\times 22.4=44.8L[/tex] of oxygen at STP

Thus 0.17 moles of magnesium react with=[tex]\frac{44.8}{2}\times 0.17=3.8L=3808ml[/tex]

Thus the volume of oxygen required to react with 4.03 g of magnesium at STP is 3808 ml.

A 0.100 g sample of a carbon–hydrogen–oxygen compound is combusted in a stream of pure oxygen and produces 0.220 g co2 and 0.239 g h2o. what is the mass percent of hydrogen in the sample?
a.13.3

Answers

First we assume that the compound containing only C,H,and O is combusted completely in the presence of excess oxygen, so that the only things that can be produced are water and carbon dioxide.

 

From there we should back calculate the amount of Hydrogen that is in the original sample by taking all of the hydrogen in the 0.239g to came from the organic compound.

 

And since we know that the original mass of the sample was .100g, we can also easily get a mass % H by taking the mass Hydrogen calculated over the total original mass (.100 g)

 

So that:

 

0.239g H2O / (18.01 g/mol) = .01327 moles H20

 

.01327 Moles H20 * 2.02g H (per every mole H2O) = .0268g H initially present in the sample

 

.0268g H / .100g sample = 26.8% H by mass

The mass percent of hydrogen in the 0.1 g sample of compound containing carbon–hydrogen–oxygen is 26.6%

We'll begin by calculating the mass of the hydrogen in the compound. This can be obtained as follow:

Molar mass of H₂O = (2×1) + 16 = 18 g/mol

Molar mass of H₂ = 2 × 1 = 2 g/mol

Mass H₂O produced = 0.239 g

Mass of H =?

Mass of H = [tex]\frac{2}{18} * 0.239[/tex]

Mass of H = 0.0266 g

Finally, we shall determine the mass percent of Hydrogen in the compound. This can be obtained as follow:

Mass of H = 0.0266 g

Mass of compound = 0.1

Mass percent of H =?

[tex]Percentage = \frac{mass}{mass of compound} * 100\\\\= \frac{0.0266}{0.1} * 100[/tex]

Mass Percent of H = 26.6%

Thus, the mass percent of hydrogen in the sample is 26.6%

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