All categories

3 years ago

How many moles of H2O form when 4.5 moles O2 reacts?

Chemistry

1 answer:

mart [117]3 years ago

4 0

Explanation:

Start with a balanced equation.

2H2 + O2 → 2H2O

Assuming that H2 is in excess, multiply the given moles H2O by the mole ratio between O2 and H2O in the balanced equation so that moles H2O cancel.

5 mol H2O × (1 mol O2/2 mol H2O) = 2.5 mol O2

Answer: 2.5 mol O2 are needed to make 5 mol H2O, assuming H2 is in excess.

You might be interested in

Question 1 (1 point)

Setler79 [48]

Answer:

Explanation:

5 0

3 years ago

Read 2 more answers

Which of the following is the correct way to balance the following chemical question:

vitfil [10]

Answer:

i have no answer for part A

part B

the one that has a 4 can be divided by 2 because reducing

part c

you can determine if an equation is written in the correct way by balancing the equation as if it had not been done already.

4 0

3 years ago

If 2.5 mg of salt is used with 50 ml of water to make a saline solution, how much water would be used to use up 1 kg of salt to

adoni [48]

Gguyy que no pueda hacer más de que no se puede decir nada de la gente que se puede hacer un favor de que se ha

6 0

3 years ago

Describe how a covalent bond can involve a sharing of the electrons, but still develop charges on the atoms

adelina 88 [10]

Answer:

Explanation:

Covalent bonding occurs when pairs of electrons are shared by atoms. Atoms will covalently bond with other atoms to gain more stability, which is gained by forming a full electron shell. By sharing their outermost (valence) electrons, atoms can fill up their outer electron shell and gain stability.

6 0

3 years ago

A physical chemist measures the temperature inside a vacuum chamber. Here is the result.

neonofarm [45]

Answer:

The answer is "237.247".

Explanation:

SI Unit:

This is an acronym of the word Système International in French. Its International System of Units (SI) is a metric system that would be universally acknowledged as a measurement standard. SI units play an important function in research and innovation in science and technology. In this, the temperature will be measure in the kelvin.

Conversion $^{\circ} \ to \ K$ :

let,

$\to 0^{\circ}\ C + 273.15 = 273.15\ K\\\\$

So,

$\to -35.903+273.15=237.247\ K$

8 0

3 years ago