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mestny [16]
3 years ago
12

So when dealing with molar mass when do you know to round up

Chemistry
1 answer:
aniked [119]3 years ago
8 0

The first rule is to use four digits in atomic weights and consider the calculated formula or molar mass as given with four significant digits. This rule is appropriate for beginners but has some disadvantages.

The second rule is to use all digits in the recommended atomic weights and to estimate the accuracy of the result from the number of decimal places or significant digits in these.

The third rule is to use all digits in the recommended atomic weights and to calculate the absolute maximum uncertainty of the result from the recommended uncertainties of the atomic weights. The uncertainty is rounded up to one (two) significant digit(s), and the formula or molar mass is rounded to the same absolute accuracy as the rounded uncertainty.

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Ber [7]

Answer:

The biological pump or the marine carbon pump is the title for multiple processes leading to separation of carbon from multiple sources of water. Biological pumping is partially responsible for the cycling of organic matter. This process can lead to loss of contact between carbon and the atmosphere for thousands of years.

Hope this helped!

6 0
3 years ago
Consider the reaction below. 2Al2O3 mc031-1.jpg 4Al + 3O2 How many moles of oxygen are produced when 26.5 mol of aluminum oxide
densk [106]
2Al₂O₃ ----> 4Al + 3O₂
2 moles               3 moles

2 moles of Al₂O₃ ---------- 3 moles of O₂
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5 0
3 years ago
Read 2 more answers
Both owls and snakes preying on mice in a forest is an example of
finlep [7]
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6 0
3 years ago
What powdery mineral is hazardous when airborne? Mercury, Radon, asbestos or uranium
LekaFEV [45]

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3 0
3 years ago
tsMatch the characteristics of nuclear processes with the correct process. It combines small nuclei to make larger ones A. Fissi
Ann [662]

Answer:

The process of combining the smaller nuclei to make larger one is called fusion.

Fusion occurs on the sun.

Explanation:

Fusion:

It is the process in which smaller nuclei combine to form the larger nuclei.

Fusion process also occur in the sun.

It is known as proton-proton fusion. In this proton-proton fusion, the atoms of hydrogen fused together and form helium-4. This is accomplished through several steps hydrogen atoms combine to form deuterium.

This deuterium atom fused with proton and form helium- 3.

Gamma rays are also produced in this reaction.

This helium-3 combine with another helium-3 and form helium-4 atom and two protons.

6 0
3 years ago
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