That would be when the baseball is rising. The energy from the throw is kinetic energy.
calculate the mass number for an atom that has 45 neutrons and 35 electrons.
80. Is your answer. You just add them.
What does a plateau represent on hearing curve
A heating curve graphically represents the phase transitions that a substance undergoes as heat is added to it. The plateaus on the curve mark the phase changes. The temperature remains constant during these phase transitions.
researchers have discovered that a moon rock brought back by the Apollo Astronauts has a mass of 5.671 kg and a volume of 1698 cm3. what is the density of the rock?
the answer would be 3.340 g/cm3
A bacterium called Bacillus thuringiensis (B.t.) contains a protein that can kill cotton ballworms and certain other kinds of caterpillars. A different bacterium called Agrobacterium tumefaciens has the ability to insert its genetic material into plants. Scientists in the late twentieth century took a gene from (B.t.) and inserted it into specimens of Agrobacterium tumefaciens. Genetic material from the Agrobacterium tumefaciens specimens was then inserted into cotton plants. The goal of these tests was to reduce caterpillar infestation in the cotton plants.
This is genetic engineering.
I hope this helps!
Cheer,s July.
Answer:
genetic modification.
Explanation:
true or false atoms of difference elements can combine to form compound?
It's true
There are thousands of combinations that can be put together to form a all sorts of compounds. That's the whole basis of inorganic chemistry. Organic chemistry is a little bit different. It is more restricted.
It's True my dude!!!!!!!!!!!!!!!!
Which method of heat transfer takes place when particular of matter vibrate and collide with each other in direct contact?
Conduction
Convection
Insulation
Radiation
what is the structure of 3-propyl-2-methyl-1-pentanoic acid
does any body know so plz help?
Answer:
Explanation:
Counting on the chain will be from the end where carboxylic group is attached. So, in a structure of 3-propyl-2-methyl-1-pentanoic acid, there is a
The very first carbon of the chain is in the form of carboxylic acid functional group (-COOH).Propyl group present on the third carbon atom in a five member chain in a five member chain.Methyl group is present on the second carbon atom in a five member chain.So, the structure will be drawn as image attached.
whats a chemical and what does it do?
Answer
Chemical refers both chemical substances and mixtures.Chemical is a substance, it is in the form of matter having chemical composition and characteristic propertiesChemical substances exists in liquids, solids and gases.Chemicals processes the reactions to obtain various useful things.A pure sample of a compound is found to contain 1.11x1022 nitrogen atoms of and 2.22x1022 oxygen atoms. What is the empirical formula of the compound?
The empirical formula of the compound is NO₂
calculation
Step 1: find the moles of Nitrogen and oxygen using the Avogadro's law constant
That is according to Avogadro's law 1 mole = 6.02 x 10²³ atoms
The moles of nitrogen (N) is calculated as below
= 1 mole = 6.02 x 10²³ atoms
? moles= 1.11 x 10²² atoms
by cross multiplication
= {(1 mole x 1.11 x10²² atoms) / 6.02 x 10²³ atoms} = 0.0184 moles
moles of oxygen is calculated as below
1 mole = 6.02 x 10 ²³ atoms
? moles= 2.22 x 10²² atoms
by cross multiplication
={ (1 mole x 2.22 x 10²² atoms) / 6.02 x 10²³} = 0.0369 moles
Step 2: find the mole ratio of N to O by dividing each mole by smallest number of mole (0.0184)
That is;
for N = 0.0184 /0.0184 = 1
for O =0.0369/0.0184 =2
Therefore the empirical formula = NO₂
what is the empirical formula for h2so4
The empirical formula is [tex]H_2SO_4[/tex] .
Empirical formula:-It is the simplest ratio of atoms of elements in a compound. So, the empirical formula is [tex]H_2SO_4[/tex] . The given formula is already in its simpler form.
To know more about:-
brainly.com/question/23260163
Final answer:
The empirical formula for sulfuric acid (H₂SO₄) is H₂SO₄ because the formula is already at its simplest whole-number ratio which cannot be reduced further.
Explanation:
The empirical formula for sulfuric acid (H₂SO₄) is simply its simplest formula, which defines the relative proportions of each type of atom in the substance. An empirical formula is based on the smallest whole-number ratios of atoms in a compound. In the case of H₂SO₄, the empirical formula is the same as its molecular formula because it cannot be reduced to smaller whole-number ratios. Sulfuric acid consists of two hydrogen (H) atoms, one sulfur (S) atom, and four oxygen (O) atoms.
The empirical formula shows the simplest ratio of elements in a compound. In most cases, this is not necessarily the actual number of atoms present in a molecule of the compound, but for H₂SO₄, the empirical formula and molecular formula are identical. To derive an empirical formula, you would normally divide the moles of each element by the smallest number of moles to get a whole-number ratio, but with sulfuric acid, no division is necessary as it is already in the lowest terms.
The products of the neutralization reaction between hydrochloride acid and magnesium hydroxide are
MgCl12 and H20
Hope it helps!
magnesium chloride (MgCl₂) and water (H₂O).
arsenic-80 alpha decay
Chelation. Dimercaprol and dimercaptosuccinic acid are chelating agents that sequester the arsenic away from blood proteins and are used in treating acute arsenic poisoning. The most important side effect is hypertension. Dimercaprol is considerably more toxic than succimer.
If molarity = moles liter , then how many grams of NaCl are needed to make 1 liter of a 0.1 M solution? A) 0.0584 g NaCl B) 3.246 g NaCl C) 5.844 g NaCl D) 58.44 g NaCl
The grams of NaCl that needed to make 1L of a 0.1 M solution is
5.845 g (answer C)
calculation
Step 1: find the moles of NaCl
moles = molarity x volume in liters
molarity = 0.1 M =0.1 mol/l
= 1 L x 0.1 Mol/L = 0.1 moles
Step 2: find the mass NaCl
mass = moles x molar mass
From periodic table the molar mass of NaCl = 23 +35.45 =58.45 g/mol
mass= 0.1 moles x 58.45 g/mol =5.845 g appropriate ( answer C)
To calculate the number of grams of NaCl that would be needed to make 0.1 M of solution we have to calculate;
The molecular weight of sodium chloride (NaCl) which is 58.44 g, so one gram molecular weight will be= 1 mole which is 58.44 g.By dissolving 58.44 g of NaCl upto the final volume of 1 litre, one can get 1 M NaCl solution.So, to make 0.1 M NaCl solution we have to dilute the mass of salt to 1000 ml of solution as follows;0.1 M NaCl solution will require 0.1 x 58.44 g of NaCl = 5.844 g. of NaCl.What do scientists call organisms, such as plants, which make their own food?
Most plants are called autotrophs they make their own food
Enlist the 2factors which are used in the formation of dry ice
Carbon dioxide is a gas at normal room temperature and atmospheric pressure. Carbon dioxide gas converts into solid carbon dioxide when frozen to a particular temperature with no intermediate liquid phase. This frozen or solidified carbon dioxide is called dry ice. Dry ice is formed when gaseous carbon dioxide is cooled to very low temperatures under high pressure. High pressure brings about condensation of the gas molecules and low temperature solidifies the carbon dioxide gas. Therefore, tow factors that help in formation of dry ice are low temperature and high pressure.
The text says, "refugee and immigrant Children in Canada have significant similarities."
what does significant mean?
How is the atomic mass of an element calculated? A. by determining the number of electrons in the outer orbital B.by determining the number of protons in the nucleus C. by taking the weighted averages of naturally occurring isotopes of that element D. by dividing its mass by that of the carbon-12 atom
By adding together the number of protons and neutrons and multiplying by 1 amu, you can calculate the mass of the atom.
The atomic mass of an element is calculated by taking the weighted averages of naturally occurring isotopes of that element. C is the correct option among the given options.
Atomic mass, also known as atomic weight, refers to the average mass of atoms of an element. It is a relative measure that compares the mass of an atom to the mass of a reference atom. The atomic mass is typically expressed in atomic mass units [tex](amu)[/tex] or unified atomic mass units [tex](u).[/tex]
This means that, the atomic mass of an element is calculated by taking into account the abundance of each isotope of the element and its atomic mass. A weighted average is an average in which each value to be averaged is multiplied by a factor reflecting its importance, and the resulting products are added together and then divided by the sum of the factors.
Therefore, the weighted averages of naturally occurring isotopes of that element is referred as atomic mass. Option C is the correct option.
Learn more atomic mass about here:
https://brainly.com/question/29117302
#SPJ2
How many grams of carbon monoxide are needed to react with an excess of iron (III) oxide to produce 198.5 grams of iron? Fe2O3(s) + 3CO(g) -----à 3CO2(g) + 2Fe(s)
Answer : The grams of carbon monoxide needed are 148.89 g
Solution : Given,
Mass of iron, Fe = 198.5 g
Molar mass of iron, Fe = 56 g/mole
Molar mass of carbon monoxide, CO = 28 g/mole
First we have to calculate the moles of iron, Fe.
[tex]\text{ Moles of Fe}=\frac{\text{ Mass of Fe}}{\text{ Molar mass of Fe}}=\frac{198.5g}{56g/mole}=3.545moles[/tex]
The balanced chemical reaction is,
[tex]Fe_2O_3(s)+3CO(g)\rightarrow 3CO_2(g)+2Fe(s)[/tex]
From the balanced reaction, we conclude that
2 moles of iron produces from the 3 moles of carbon monoxide
3.545 moles of iron produces from the [tex]\frac{3}{2}\times 3.545=5.3175[/tex] moles of carbon monoxide
Now we have to calculate the mass of carbon monoxide, CO.
[tex]\text{ Mass of CO}=\text{ Moles of CO}\times \text{ Molar mass of CO}[/tex]
[tex]\text{ Mass of CO}=(5.3175moles)\times (28g/mole)=148.89g[/tex]
Therefore, the grams of carbon monoxide needed are 148.89 g
Which are ways of showing probability? Check all that apply. A.50% B.557 C.1 × 104 D.25%
Option: A and D are the correct answer.
A. 50% and D. 25%
Explanation:We know that the probability of an event is the chance of occurring of an event.
The probability of an event always lie between 0 and 1.
It is equal to zero if the event will never occur and is equal to 1 if the event is certain to occur.
Also, the probability could be in ratio or it could be in percentage and the percent may be between 0%-100%
Hence, in the given options:
B) 557 is incorrect as the probability is greater than 1.
c) 1×104=104 is incorrect since the probability is greater than 1
Hence, the correct options are:
A. 50%
and D. 25%
I have 4 moles of CO₂. How many molecules of CO₂ is this? Show your work. Scientific notation example: 6.02 x 10^23
Final answer:
To calculate the number of CO₂ molecules in 4 moles, multiply 4 by Avogadro's number (6.022 × 10²³). The result is 2.4088 × 10²⁴ molecules of CO₂.
Explanation:
To find the number of CO₂ molecules in 4 moles, we use Avogadro's number, which states that one mole of any substance contains exactly 6.02214076 × 10²³ molecules. Therefore, to calculate the number of molecules in 4 moles of CO₂, you multiply the number of moles by Avogadro's number.
Calculation:
Number of CO₂ molecules = Number of moles × Avogadro's numberNumber of CO₂ molecules = 4 moles × 6.022 × 10²³ molecules/moleNumber of CO₂ molecules = 24.088 × 10²³ moleculesNumber of CO₂ molecules = 2.4088 × 10²⁴ moleculesTherefore, 4 moles of CO₂ contain 2.4088 × 10²⁴ molecules.
Mg + HCI = MgCI2 = H2
The equation Mg + HCl = MgCl2 + H2 represents a chemical reaction where magnesium (Mg) reacts with hydrochloric acid (HCl) to form magnesium chloride (MgCl2) and hydrogen gas (H2). This is also an example of a redox reaction, where magnesium is oxidized and hydrogen is reduced.
Explanation:The equation Mg + HCl = MgCl2 + H2 represents a chemical reaction where magnesium (Mg) reacts with hydrochloric acid (HCl) to form magnesium chloride (MgCl2) and hydrogen gas (H2). The equation tells us that one mole of magnesium reacts with two moles of hydrochloric acid to produce one mole of magnesium chloride and one mole of hydrogen gas - this can be seen as an example of single displacement reaction.
This process is also an example of a redox reaction, in which magnesium is oxidized and hydrogen in HCl is reduced.
Learn more about Chemical Reaction here:https://brainly.com/question/34137415
#SPJ3
after learning about the law of conservation of mass, Remy began to wonder about how to best test this law. She wanted to show that the amounts of matter did not change but produced an equal amount of a different kind of matter. What is the best way to study this law?
a.) in a heterogeneous mixture
b.) in a homogeneous mixture
c.) in a open system
d.) in a closed system
Answer is: d.) in a closed system.
Conservation of mass: during chemical reaction no particles are created or destroyed, the atoms are rearranged from the reactants to the products.
Closed system is a physical system that does not allow transfer of mass and energy in or out of the system.
For example, chemical reaction: 2CH₃OH + 3O₂ → 2CO₂ + 4H₂O.
1) There are four hydrogen atoms, one carbon atom, four oxygen atoms in this chemical reaction.
2) There are eight hydrogen atoms, two carbon atoms, eight oxygen atoms in this chemical reaction.
To study the law of conservation of mass, a closed system is ideal because it prevents mass from entering or exiting, allowing for accurate observation of matter transformation.
Explanation:The best way to study the law of conservation of mass is in a closed system. A closed system does not allow the exchange of matter with its surroundings, ensuring that mass can neither enter nor leave the system. This creates an ideal environment to observe that matter is neither created nor destroyed but only transformed in chemical reactions.
For example, if you bake dough in a closed system like a sealed container, the mass of the dough before and after baking would remain the same, despite the release of gases that cause the dough to rise. The total mass of the reactants (dough) equals the total mass of the products (bread and gases), thereby complying with the law of conservation of mass.
For what anions are the compound always soluble in water?
I believe the compounds of Na+ , K+ and NH4+ are always soluble in water.
What is the geometry name for CH2S? Is it polar or non-polar?
The molecular geometry of CH₂S is trigonal planar and the molecule is polar .
What is molecular geometry?Molecular geometry can be defined as a three -dimensional arrangement of atoms which constitute the molecule.It includes parameters like bond length,bond angle and torsional angles.
It influences many properties of molecules like reactivity,polarity color,magnetism .The molecular geometry can be determined by various spectroscopic methods and diffraction methods , some of which are infrared,microwave and Raman spectroscopy.
They provide information about geometry by taking into considerations the vibrational and rotational absorbance of a substance.Neutron and electron diffraction techniques provide information about the distance between nuclei and electron density.
Learn more about molecular geometry,here:
https://brainly.com/question/28557524
#SPJ2
How do u do this ??? I need help1
so for shortest it would be x-rays, middle would be red visible light and longest would be infrared
the one with most energy would be gamma rays and the least would be radio waves i think.
Brad is swimming in the ocean on a hot sunny day. He finds the water to be much colder than the sand on the beach, but even though the sun is warming them both. Identify the reasons for brads observation.
Answer:
The first one is energy.
The second one is specific heat.
Explanation:
Platos answer
A girls walks 4 steps forward and then 3 steps backward. The girls distance walked is _________ steps and her displacement is ____________ steps. A) 1, 7 B) 3, 4 C) 7, 1 D) 7, 7
The distance walked would be the total amount of her movement.
4 steps+3 steps=7 steps
The displacement is how far from her original location the girl is.
4 steps-3 steps=1 step.
C) 7, 1
Hope this helps!!
who is sheikh hasina
"Sheikh Hasina Wazed is the current and 10th Prime Minister of Bangladesh, in office since January 2009. She is the longest serving prime minister in the history of Bangladesh. Hasina is the daughter of Bangladesh's first President Sheikh Mujibur Rahman. Her political career has spanned more than four decades".
Sheikh Hasina Wazed, byname Sheikh Hasina, Wazed also spelled Wajed, (born September 28, 1947, Tungipara, East Pakistan [now in Bangladesh]), Bengali politician and leader of the Awami League political party, who twice served as prime minister of Bangladesh (1996–2001; 2009– ) Bearing the legacy of her father, who led Bangladesh’s liberation war, Hasina has never been afraid of a fight. So when several hundred thousand ethnic Rohingya refugees started streaming into Bangladesh last August to escape atrocities by the Myanmar army, she accepted the humanitarian challenge. An impoverished country, Bangladesh had not welcomed massive influxes of refugees in the past, but she could hardly turn back the traumatized victims of ethnic cleansing.
Explain how the Rutherford gold foil experiment correctly advanced atomic theory away from the plum pudding model?
Answer:
D. It proved the positive charge is concentrated in a relatively small region of the atom.
Explanation:
it was on USATestprep!!!!
how many moles of 02 can be prepared from 6.75 moles of KCIO3 ?
The equation for this question could be [tex]2KClO_{3}[/tex]→[tex]2KCl+3O_{2}[/tex] .
so for 6.75 moles of [tex]KClO_{3}[/tex] *3 moles of O_{2}/2 moles of [tex]KClO_{3}[/tex]
= 10.125