The empirical formula : Na₂Cr₂O₇
<h3>Further explanation</h3>
Given
170 g sample contains :
29.84 g sodium, 67.49 g chromium, and 72.67 g oxygen
Required
The compound's empirical formula
Solution
mol ratio of elements :
Na : 29.84 : 23 g/mol = 1.297
Cr : 67.49 : 51,9961 g/mol = 1.297
O : 72.67 : 16 g/mol = 4.54
Divide by 1.297
Na : Cr : O = 1 : 1 : 3.5 = 2 : 2 : 7
Answer:
A synthesis reaction.
Explanation:
A synthesis reaction takes place when two elements are combined to form one compound.
Answer:
Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. ... Forces always come in pairs - equal and opposite action-reaction force pairs.
Explanation:
Answer:
The three components are:
- Minerals.
- Organic matter.
- Living organisms.
Explanation:
Soil is made up of three main components:
- Minerals that come from rocks below different layers of the soil.
- Organic matter(humus) which is the remains of plants and animals that increases the fertility of the soil and also increases the water holding capacity of soil.
- Living organisms that reside in the soil.
Result: The three main components of soil are minerals, organic matter, living organisms.
Answer:
Decomposition
Explanation:
2NO2 → 202 + N2
The compound on the left is breaking up into two separate elements.