CHEMISTRY HIGH SCHOOL

Which of the following factors is needed during light-dependent reactions to create ATP and NADPH energy molecules?Oxygen
Solar energy
Carbon dioxide
Water

Answers

Answer 1
Answer: Solar Energy is needed to create ATP and NADPH energy molecules

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A voltaic cell is set up and a chemical reaction proceeds spontaneously. Which of the following will not occur in this reaction? a. The electrons will migrate through the wire b. The cations in the salt bridge will migrate to the anode half-cell c. The cathode will gain mass d. The anode will lose mass e. Reduction will occur at the cathode
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Giving brainliest if correct!! please help someone out?
*WILL GIVE BRAINLIEST IF SOMEONE ANSWERS THIS CORRECTLY ASAP!!!!*Which of the following is a property of a mixture?It consists of a single element or compound.It may have substances in different states of matter.It is very difficult to separate the components.The proportion of the particles that make it up cannot be altered.

In the nucleus you will find most of the __________ of an atom. a. mass
b. charge
c. electrons
d. protons and neutrons

Answers

D) protons and neutrons
Mass of the object because the mass of an atom is based on the mass of the protons and the neutrons that are located in the nucleus

The bonds in the compound MgSO4 can be described asA. ionic, onlyB. covalent, onlyC. both ionic and covalentD. neither ionic nor covalent

Answers

I believe the answer is C. The bonds in the compound magnesium sulfate is ionic and covalent. Magnesium sulfate is soluble in water. When the said compound is dissolved in water, it dissociates into magnesium ions and sulfate ions. However, the bonds that held together the sulfate ions is covalent.

Both ionic and covalent bonds can be used to characterize the bonds in the molecule MgSO₄.

Magnesium sulfate, or MgSO₄, has ionic and covalent bonds throughout its structure.

Magnesium (Mg) and oxygen (O) form a mainly ionic connection in MgSO₄. Easily donating two valence electrons to oxygen, magnesium forms the ions Mg₂⁺ and SO₄²⁻. The metal (Mg) and the non-metal (O) in this ionic connection are both metals.

The bonds between sulfur (S) and oxygen (O), on the other hand, are covalent. Sulfur and oxygen share electrons to form covalent bonds in the sulfate (SO₄) ion. Two non-metal atoms (S and O) share electrons through this covalent connection.

Option C is the right response since MgSO₄ possesses both ionic and covalent bonds as a result.

To know more about oxygen:

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N2 + 3H2 mc033-1.jpg 2NH3 What is the percent yield of NH3 if the reaction of 26.3 g of H2 produces 79.0 g of NH3?

Answers

The balanced chemical reaction is:

N2 + 3H2 = 2NH3 

 

We are given the amount of H2 being reacted. This will be our starting point.

26.3 g H2 (1 mol H2 / 2.02 g H2) 2 mol O2/3 mol H2) ( 17.04 g NH3 / 1mol NH3) = 147.90 g O2

 

Percent yield = actual yield / theoretical yield x 100

 

Percent yield = 79.0 g / 147.90 g x 100

Percent yield = 53.4%

Answer:

53.4 percent yield, the fourth option

Explanation:

Stoichiometry problems which give a known amount of one reactant and solve for an amount of product frequently state that there is "an excess" or "plenty" of the reactant(s) not given. (For example, in the equation 2Na + 2H2O → 2NaOH + H2, how many grams of sodium hydroxide are produced from 3.0 mol of sodium with an excess of water?) Why is it necessary to know that there is an excess of these reactant(s)?

Answers

Dumb. Can. Cabbage. Hn. D ikkk

In the metric system, which of the following is correct?1,000 liters = 1 milliliter
1,000 kilograms = 1 gram
100 centimeters = 1 meter

Answers

100 centimeters = 1 meter

Answer:

100 centimeters = 1 meter

In science what is acid
​

Answers

In science, an acid is a chemical substance that has a pH value less than 7. It is characterized by the presence of hydrogen ions (H+) when dissolved in water. Acids can donate protons or accept electrons during chemical reactions. They have sour taste, can corrode certain metals, and can turn blue litmus paper red.
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