Ask question

Ask question

All categories

Novosadov [1.4K]

2 years ago

13

When water decomposes into oxygen and hydrogen, the mass

1 answer:

Maurinko [17]2 years ago

8 0

<span>When water decomposes into oxygen and hydrogen, the mass "Remains Constant" as according to Law of Conservation of mass, mass can neither be created not destroyed,.

In short, Your Answer would be Option A

Hope this helps!</span>

You might be interested in

Is ninhydren test positive for protein?

lyudmila [28]

The Ninhydrin test is not effective to detect high molecular weight proteins as the steric hindrance limits the ninhydrin from reaching the α-amino groups.

5 0

1 year ago

A solution contains 0.775 g Ca2 0.775 g Ca2 in enough water to make a 1925 mL1925 mL solution. What is the milliequivalents of C

Romashka [77]

Answer: There will be 0.00002 meq per Liter of the solution.

Explanation:

Normality is defined as the umber of gram equivalents dissolved per liter of the solution.

$Normality=\frac{\text{no of gram equivalents} \times 1000}{\text{Volume in ml}}$

$Normality=\frac{\text{given mass}\times 1000}{\text {Equivalent mass}\times {\text{Volume in ml}}}$

Equivalent weight is calculated by dividing the molecular weight by n factor. ${\text{Equivalent weight}}=\frac{\text{Molecular weight}}{n}$

n= charge for charged species , For $Ca^{2+}$ , n =2

${\text{Equivalent weight}}=\frac{40}{2}=20g$

$\text{no of gram equivalents}=\frac{0.775g}{20g/mol}=0.04gramequivalents$

$Normality=\frac{0.04\times 1000}{1925}=0.02eq/L=0.00002meq/L$

Thus there will be 0.00002 meq per Liter of the solution.

3 0

3 years ago

Shape of a molecule having four Bond pairs and two lone pair of electron will be

Anna71 [15]

Answer:

bipetal

Explanation:

this is because 2 electrons will be donated by each element, as seen in NO2

6 0

2 years ago

How is the precision of a calculated result related to the precision of the measurement used in the calculation?

sashaice [31]

The precision of a calculated answer is limited by the least precise measurements used in the calculation.

Hope this helps :)

7 0

2 years ago

Separation techniques in analytical chemistry

denis23 [38]

Chromatography is one of them

8 0

2 years ago