2 years ago

How to find electrons.

Chemistry

1 answer:

ycow [4]2 years ago

7 0

Answer:

The number of electrons is the atomic number

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Which of the following samples had the lowest average kinetic energy?

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Answer:

B. 10 mL of Cabr2(aq) at 35 degrees celsius

Explanation:

The colder something is the more the atoms are compressed together; atoms can't move as much. 35 degrees is the warmest option, so it makes the most sense.

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2 years ago

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n-Butane (C4H10) is burned with stoichiometric amount of oxygen. Determine the mole fraction of carbon dioxide and water in the

Fudgin [204]

Answer:

See details below

Explanation:

The balanced reaction equation is given below:

$2C_{4} H_{10}$ + $13O_{2}$ → $8CO_{2}$ + $10H_{2} O$

Mole fraction of CO2 to H20

= 8/10 = $\frac{4}{5}$

Mole ratio of C4H10 to CO2 is 2:8 = 1:4

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4 moles - ?

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3 years ago

Consider the equations below. (1) Fe2O3(s) → 2Fe(s) + 3 2 O2(g) (2) Fe2O3(s) + 3CO(g) → 2Fe(s)+3CO2(g) Which equation must be ad

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C. 3CO(g)+ $\frac{3}{2}$ O2(g)→3CO2(g)

Explanation:

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3 years ago

What is the simplest aromatic compound?<br> toluene<br> benzene<br> cyclohexane<br> cyclopropane

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It’s Benzene, I do believe :) hope this helped, good luck!

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3 years ago

The density of copper is 8.9 g/mL. What is the volume of 20.5 g copper?

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Answer:

density = 8.9 g/ml

m = 20.5 g

V = ... ?

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= 2.30337 ml

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3 years ago