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Art [367]
3 years ago
11

Elements join together to form_____.

Chemistry
1 answer:
sineoko [7]3 years ago
6 0

Answer:

compounds

Explanation:

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Compound 2 contains 2.0g of hydrogen and 32.0g oxygen. What is the percent compound of each element?
Dmitriy789 [7]

Note down the formula below

\boxed{\sf Mass\%\;of\; element=\dfrac{Mass\:of\:the\: element}{Mass\;of\:the\: compound}\times 100}

Mass of the compound

\\ \sf\longmapsto 32+2=34g

Mass % of Hydrogen:-

\\ \sf\longmapsto \dfrac{2}{34}\times 100

\\ \sf\longmapsto \dfrac{1}{17}\times 100

\\ \sf\longmapsto 5.8\%

Mass % of Oxygen:-

\\ \sf\longmapsto \dfrac{32}{34}\times 100

\\ \sf\longmapsto \dfrac{16}{17}\times 100

\\ \sf\longmapsto 94.2\%

7 0
3 years ago
Consider the reaction N2(g) + 3H2(g) ----> 2NH3(g). What is the effect of decreasing the volume of the contained gases?
r-ruslan [8.4K]

Answer:

If the volume of a container is decreased, the temperature decreases, which means that the volume of a gas is directly proportional to its temperature

4 0
3 years ago
Rewrite this measurement with a simpler unit, if possible. <br> 8.3 kg•m^2/ s^2
Feliz [49]

Answer: 8.3 J

Explanation:

We have the following measurement:

8.3 \frac{kg m^{2}}{s^{2}}

Rearranging the units:

8.3 \frac{kg m}{s^{2}}m

Since 1 Newton is 1 N=1 \frac{kg m}{s^{2}}:

8.3 Nm

Since 1 Joule is 1 J=1 Nm:

8.3 J This is the simplest form possible

7 0
3 years ago
Why can molar mass be used as a conversion factor
Gre4nikov [31]

From the relative atomic mass of each element, it is possible to determine each element's molar mass by multiplying the molar mass constant (1 g/mol) by the atomic weight of that particular element. The molar mass value can be used as a conversion factor to facilitate mass-to-mole and mole-to-mass conversions.

5 0
2 years ago
Read 2 more answers
Consider the equations below. (1) Fe2O3(s) → 2Fe(s) + 3 2 O2(g) (2) Fe2O3(s) + 3CO(g) → 2Fe(s)+3CO2(g) Which equation must be ad
slega [8]

Answer:

C. 3CO(g)+\frac{3}{2}O2(g)→3CO2(g)

Explanation:

7 0
3 years ago
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