Balanced chemical equation:

2 H2 + 1 O2 = 2 H2O

4 g H2 -------> 32 g O2 -----------> 36 g H2O
↓ ↓ ↓
14.0 g ---------> 2.0 g O2 ----------> mass H2O ?

32 * mass H2O = 2.0 * 36

32 * mass H2O = 72

mass of H2O = 72 / 32

mass of H2O = 2.25 g

hope this helps!.

4 0

3 years ago

Convert 5.00 mm to centimeters (cm).<br> 1 cm = 10 mm<br> (please show work) ASAP

adelina 88 [10]

Answer:

0.5 centimetres

Explanation:

because 1 mm is 0.1 centimetres

7 0

3 years ago

Oxygen and hydrogen are kept under the same temperature and pressure. Oxygen molecule is 16 times more massive than hydrogen one

lozanna [386]

Explanation:

When we increase the temperature of a substance then there will occur an increase in the kinetic energy of its molecules.

Also, K.E = $\frac{3}{2}kT$

So, kinetic energy is directly proportional to the temperature.

Hence, when temperature and pressure are kept the same for both oxygen and hydrogen gas then values of their kinetic energy will be the same irrespective of their masses.

Thus, we can conclude that kinetic energy of oxygen molecule is the same as compared to hydrogen molecule.

3 0

3 years ago

C -14 and N-14 both have same mass number yet they are different elements. Explain

KiRa [710]

Explanation:

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7 0

3 years ago

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