Density= 5m^3
Explanation:
Here, the Mass of an object is 25g
To convert grams into kilograms, we need to divide 25 by 1000
so, the 25g=25/1000 = 0.025kg.
The volume of an object is given by 5cm^3 ( cubic centimetre)
To convert cubic centimetre to meter cube, we need to divide 5 by 1000.
So, 5cm^3=5/1000=0.005m^3
Finally, the equation of density is
DENSITY= MASS/VOLUME
Density = 0.025/0.005
= 5m^3
Hence, the density of the object is 5m^3.
Answer:
is that in a molecule of an element, all the atoms are the same. For example, in a molecule of water (a compound), there is one oxygen atom and two hydrogen atoms. But in a molecule of oxygen (an element), both of the atoms are oxygen.
Explanation:
Formula units are there in 212 grams of MgCl₂ are 830.56
Formula is the empirical of any ionic or covalent network solid compound used as an independent entity for stoichiometric calculations and it is the lowest whole number ratio of ions represented in an ionic compound
Here given data is
MgCl₂ = 212 grams
1 mole of magnesium chloride has mass = 95.211 gram and contains 6.022×10²³formula units of magnesium chloride
Here 212 grams×6.022×10²³form unit of MgCl₂/95.211 gram = 830.56
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Answer:
A) Carbon dioxide and Oxygen
Explanation:
Percentage of gases in the Planet's atmosphere:
- Carbon dioxide =<u> </u><u>4</u><u> </u><u>%</u><u> </u>
- Nitrogen =<u> </u><u>72</u><u> </u><u>%</u><u> </u>
- Oxygen =<u> </u><u>24</u><u> </u><u>%</u><u> </u>
Percentage of gases in the Earth's atmosphere:
- Carbon dioxide =<u> </u><u>0.036</u><u> </u><u>%</u><u> </u><em>(</em><em>traces</em><em>)</em>
- Nitrogen =<u> </u><u>78</u><u> </u><u>%</u><u> </u>
- Oxygen =<u> </u><u>21</u><u> </u><u>%</u><u> </u>
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On observing the percentage composition of the atmospheres of the two Planets, we get:
- The newly discovered planet has more percentage of <u>Oxygen</u> than The Earth.
- Percentage of <u>Carbon dioxide</u> is more in the planet than in the Earth
- <em>Nitrogen</em> is <u>less</u> in the planet than in the Earth.
___________________
Answer:
What's asked is the name of the gases that are in higher amounts in the atmosphere of the newly discover planet
Therefore,
<h3>A) Carbon dioxide and Oxygen</h3>