4 years ago

When 3.4 moles of hydrogen gas react with excess oxygen how many moles of water will be produced

1 answer:

6 0

1. start with balanced equation.
2 H2(g) + O2(g) 2 H2O(g)

2. Use stoichiometry
(3.4moles of H)(2moles of H2O/2moles of H)
The moles of H will cancel, leaving you with moles of H2O.
The answer is 3.4 moles of H2O

You might be interested in

what volume will it occupied 40 degrees celsius a gas sample was collected when a temperature is 27 degrees celsius and the volu

love history [14]

T_1=27°C
T_2=40°C
V_1=1L
V_2=?

Using Charles law

$\boxed{\sf \dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}}$

$\\ \sf\longmapsto V_1T_2=V_2T_1$

$\\ \sf\longmapsto 1(40)=27V_2$

$\\ \sf\longmapsto V_2=\dfrac{40}{27}$

$\\ \sf\longmapsto V_2=1.48\ell$

7 0

3 years ago

How does gravity depend on the mass of the two objects

marin [14]

Answer:

Yes

Explanation:

the gravity of an object depends on its mass. that's why the sun has its gravitational pull.

3 0

2 years ago

What is the mass of 40.34 x 10^23 H2 molecules at stp?

aev [14]

Every mol=6.22*10^23 molecules and every mol of H2 Is 2 gram
40.34*10^23/6.22*10^23=6.48 or 6.5
6.5*2=13 gram

4 0

3 years ago

Read 2 more answers

A boy who weighs 30 kg is skateboarding at a speed of 5 m/s. What is the boys kinetic energy?

zheka24 [161]

I’m pretty sure it’s 150 joules

5 0

3 years ago

What is the molecular formula of a molecule that has an empirical formula of CH and a molecular mass of 78.11 g

sveticcg [70]

Answer: C6H6

Explanation: Molecular Formula is the molecular mass divided by the empirical formula mass of CH which is C 12and H is 1 so 12 + 1= 13 g CH

Solution:

78.11 g CH / 13 g CH = 6

5 0

3 years ago