Answer:
homeostasis is the stabilizing of an organism's internal condition
Which description is not a property of an acid? A turns litmus paper red B bitter taste C corrosive D dissolve metals
Answer:
Bitter Taste
Explanation:
Acids have a sour taste and Bases have a Bitter taste. Acids turn litmus paper red because their pH level is less than 7. They are corrosive and can break down materials. They can also dissolve metals. Hope this helped ú⩊ù
The sales tax rate is 8%. If Jim bought a new Buick and paid a sales tax of $1,920, what was the cost of the Buick before the tax?
Answer:
$24000
Explanation:
We are given that
Sales tax=8%
Sales tax amount=$1920
We have to find the cost of the Buick before the tax.
Let x be the cost of Buick before the tax.
According to question
8% of x=1920
[tex]\frac{8}{100}\times x=1920[/tex]
[tex]x=\frac{1920}\times \frac{100}{8}[/tex]
[tex]x=24000[/tex]
Hence, the cost of the Buick before the tax=$24000
Sodium has more valence electrons than magnesium. True or False
what happens when an electron falls to a lower energy level?
When an electron falls to a lower energy level, a photon is emitted representing the energy difference between the higher and the lower state. This process is a fundamental aspect in atomic physics and basis of many light effects.
Explanation:When an electron falls to a lower energy level, energy is released. This energy transition is represented as an emitted photon, a packet of electromagnetic energy. Based on Bohr's model, a hydrogen atom is most stable in its ground state, when an electron is in its lowest energy orbit. An atom can absorb energy, causing an electron to shift to a higher energy level, or an excited state. However, an atom usually exists in the excited state for a brief period before the electron naturally transitions back to a lower energy level, or ground state. During this decline, a photon of specific wavelength is emitted, accounting for the energy difference between initial and final energy levels.
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What is the relationship between mass and the end stages of stars
Is the following chemical equation balanced? 2Na + 2H2O 2NaOH + H2
yes because you have 2 H 2Na 2O on both sides
Answer : Yes, the given chemical reaction is balanced equation.
Explanation :
Balanced chemical reaction : It is defined as the number of atoms of individual elements present on reactant side must be equal to the product side.
The given chemical reaction is,
[tex]2Na+2H_2O\rightarrow 2NaOH+H_2[/tex]
In this reaction, there are 2 atoms of sodium, 4 atoms of hydrogen and 2 atoms of oxygen are present on both side of the reaction. So,
This chemical reaction is a balanced reaction because in this reaction, the number of atoms of sodium, hydrogen and oxygen are balanced on the side of the reaction.
Hence, yes the given chemical reaction is balanced equation.
How many grams of O are in 585 g of Li2O
The amount of oxygen in 585 g of Li2O is calculated using the molar mass of Li2O and the proportion of oxygen's molar mass to Li2O's molar mass, then multiplied by the total mass of Li2O.
Explanation:To determine how many grams of oxygen are in 585 grams of Li2O, we use the molar mass of Li2O and the molar mass of oxygen. The molar mass of Li2O (lithium oxide) is the sum of the mass of two lithium atoms and one oxygen atom. One mole of Li2O weighs approximately 29.88 g/mol (2 x 6.94 + 16.00), and one mole of oxygen weighs 16.00 g/mol.
To find the mass of oxygen in Li2O:
First, find the moles of Li2O in 585 g: Moles of Li2O = 585 g / 29.88 g/molNext, find the grams of oxygen in that amount of Li2O moles using the molar mass of oxygen: 16.00 g/mol.Multiply the moles of Li2O by the molar mass of oxygen.Therefore, to calculate the exact grams of oxygen in 585 g of Li2O, you use the proportion of oxygen's molar mass to Li2O's molar mass, which is 16.00/29.88. Multiply this by the given mass of Li2O to find the mass of just the oxygen part:
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To determine the grams of oxygen in 585 g of Li₂O, first calculate the molar mass of Li₂O, find the number of moles in 585 g, and then convert the moles of oxygen to grams. The final result is 335.84 grams of oxygen.
To find the number of grams of oxygen in 585 g of Li₂O, we need to follow these steps:
Determine the molar mass of Li₂O by summing the atomic masses of its elements: Lithium (Li) has an atomic mass of 6.94 g/mol and Oxygen (O) has an atomic mass of 16.00 g/mol. Thus, the molar mass of Li₂O is: (2 * 6.94 g/mol) + 16.00 g/mol = 27.88 g/mol.Calculate the number of moles of Li₂O in 585 g: Number of moles = Mass / Molar Mass = 585 g / 27.88 g/mol = 20.99 moles of Li₂O.Since there is 1 mole of oxygen in each mole of Li₂O, there are 20.99 moles of O in 20.99 moles of Li₂O.Convert moles of O to grams by multiplying the number of moles by the atomic mass of O: Mass of O = Number of moles * Atomic Mass = 20.99 moles * 16.00 g/mol = 335.84 g.Therefore, there are 335.84 grams of oxygen in 585 grams of Li₂O.
WHAT ARE NEWTON'S 3 LAW'S
Final answer:
Newton's three laws of motion are fundamental principles in classical mechanics, explaining how objects behave under various forces. The first law, or law of inertia, says objects maintain their state of motion unless acted upon by an external force. The second law relates force, mass, and acceleration, while the third law states that every action has an equal and opposite reaction.
Explanation:
Isaac Newton's three fundamental laws of motion form the basis for classical mechanics, describing the relationship between a body and the forces acting upon it. The laws are integral to our understanding of interactions and forces in physics.
Newton's first law, also known as the law of inertia, asserts that an object at rest will stay at rest, and an object in motion will stay in motion at a constant velocity unless acted upon by an external force. Newton's second law advances this concept by stating that the acceleration of an object is directly proportional to the net force acting upon it and inversely proportional to its mass. Lastly, Newton's third law establishes that for every action, there is an equal and opposite reaction, meaning that forces between two interacting objects are equal in magnitude and opposite in direction.
Transport of glucose enters a liver cell through a protein Chanel
Franklin ordered 6 boxes of popsicles for a pool party. each box had 20 popsicles. there will be 50 guests at the party. which can we use to find the number of popsicles (p) each person can have if they are divided equally between the guests
Answer:
ok so the answer is 6×12÷24= THE Answer if u were look for this
Explanation:
SO IN KHAN I DID IT AND I GOT IT RIGHT
THX PERSON
Why is it important to dispose of wastes from nuclear power plants carefully? A) The wastes cause the greenhouse effect. B) The wastes are radioactive and could cause cancer. C) The wastes do not decompose and take up a lot of space. D) The wastes flow into ponds and lakes and cause algal bloom.
what organelle is found in paramecia cell but not plant cells
what is the density of object with volume of 20 ml and a mass of 5 grams?
calculate the percentage of a solution formed by dissolving 10g of glucose in 240g of water
Matt did an experiment to study the solubility of two substances. He poured 100 mL of water at 20 °C into each of two beakers labeled A and B. He put 50 g of Substance A in the beaker labeled A and 50 g of Substance B in the beaker labeled B. The solution in both beakers was stirred for 1 minute. The amount of substance left undissolved in the beakers was weighed. The experiment was repeated for different temperatures of water and the observations were recorded as shown.
Experimental ObservationsSubstance Mass of Undissolved Substance at Different Temperatures (gram)
20 °C 40 °C 60 °C 80 °C
A 50 50 50 50
B 10 8 5 2
Part 1: Which, if any, substance is soluble in water?
Part 2: Explain how the data helped you determine solubility for both substances for temperatures 20 °C to 80 °C.
Part 1 : Answer is only B substance is soluble in water.
In this experiment undissolved mass of each substance was measured. According to the given data, undissolved mass of substance B at 20 °C is 10 g while A is 50 g. Since, the initial added mass of each substance is 50 g, we can see that substance A is not soluble in water since the undissolved mass is 50 g.
Part 2 : Substance A is not soluble in water and substance B is soluble in water.
According to the given data, the undissolved mass of substance A remains as same as initial added mass, 50 g throughout the temperature range from 20 ° to 80 °C. Hence, we can conclude that substance A is not soluble in water.
But, according to the data, undissolved mass of substance B at 20 °C is 10 g. That means, 40 g of substance B was dissolved in water. When the temperature increases the undissolved mass of substance B decreases. Hence, we can conclude that substance B is soluble in water and solubility increases with temperature.
How high in meters must a column of glycerol be to exert a pressure equal to that of a 760-mm column of mercury? The density of glycerol is 1.26g/mL, whereas that of mercury is 13.6g/mL.
What is the 3rd noble gas
how many elements in CuSO4
a substance that has a definite shape and volume is a
A solid
B liquid
C gas
D fluid
Why is the air warmer than the water in a pool on a hot sunny morning? due to surface tension because of water’s specific heat because of capillary action due to water’s solvent properties
The air is warmer than the pool water because water has a high specific heat, requiring more energy to increase its temperature than air does. Option B is correct.
Specific heat is the amount of energy required to raise the temperature of a substance. Water has a high specific heat, which means it takes more energy to increase its temperature compared to air. This property allows water to absorb a lot of heat without a significant rise in temperature, hence it often feels cooler than the air on a sunny day.
Furthermore, it's also worth noting that this high specific heat of water plays a crucial role in Earth's climate and helps to moderate temperatures.
Hence, B. is the correct option.
The complete question is:
Why is the air warmer than the water in a pool on a hot sunny morning?
A) due to surface tension
B) because of water’s specific heat
C) because of capillary action
D) due to water’s solvent properties
Hydrocarbon with empirical formula c3h8
The hydrocarbon with the empirical formula C3H8 is Propane, a saturated hydrocarbon that belongs to the alkane family.
Explanation:The hydrocarbon with an empirical formula of C3H8 is Propane. The empirical formula provides the simplest, reduced ratio of elements within a compound. In the case of C3H8, this represents 3 carbon atoms to 8 hydrogen atoms, which is the formula for propane. Propane is a member of the alkane family of hydrocarbons, which are characterized by single bonds between the carbon and hydrogen atoms, therefore classified as saturated hydrocarbons.
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The amount of energy in the bonds of the reactants plus any energy absorbed equals the amount of energy in the bonds of the products plus any energy _____.
What is an astronomical unit? Why is this unit used to measure distances in the solar system?
How does the law of conservation of mass apply to this reaction C2H4 + O2 > 2H2O + 2CO2
Compounds may be represented by chemical formulas. In the chemical formula for water which is H20, the 2 which represents the number of hydrogen atoms is called_______?
A) the reactant.
B) the subscript.
C) the coefficient.
D) the atom factor.
In the following reaction, the sodium and chlorine are ____. 2NaCl->2Na + Cl^2
Answer : The sodium and chlorine are the products.
Explanation :
Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on the reactant side must be equal to the product side.
The given balanced chemical reaction is,
[tex]2NaCl\rightarrow 2Na+Cl_2[/tex]
In the balanced chemical reaction, the species present on the left side of the reaction is known as reactant and the species present on the right side of the reaction is known as product.
From this we conclude that, the sodium, [tex]Na[/tex] and chlorine, [tex]Cl_2[/tex] are the products and sodium chloride, [tex]NaCl[/tex] is the reactant.
Hence, the sodium and chlorine are the products.
Josie bought a soda and 2 candy bars the soda cost $1.10 her bill was $2.40. how much was her candy bar?
how many total atoms are in CuSO4
science question down below
Which of the following techniques can be used to separate a homogeneous mixture into its component parts?
Sort by color
Sort by size
Separation by density
Use magnetism
The right is Separation by density .
Take the blood which is a good example of a heterogeneous mixture.
Blood is a vital liquid in our body, which transports oxygen from the air to our lungs so we can breathe. It is also used to eject wastes, such as carbon dioxide, to bring cells and molecules of the immune system to the tissues, and to spread hormones throughout the body. It corresponds to plasma, red blood cells, white blood cells, platelets and hemoglobins combined.
In medical tests centrifugal force is used to separate the different components of the blood.
In general, the centrifugation will allow to separate and analyze the different components of the blood, to know if the rate of white blood cells in the blood of a patient, for example, is normal, and therefore to know if his system Immune is integrity.
Under the action of centrifugal force, the solid components in the blood are drawn to the bottom of the tube in which the blood is contained. The centrifugal force then acts as an accelerated settling. It separates plasma from red blood cells and white blood cells.
Answer:
The answer is seperation by density! Hope this helped
Explanation: