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tresset_1 [31]
3 years ago
10

A student wants to investigate competition between two organisms. For the investigation, it

Chemistry
1 answer:
Tanzania [10]3 years ago
7 0

Answer:

i think that the answer is B

Explanation:

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Examine each of the following pie charts. Which one shows the correct makeup of Earth's atmosphere?
I am Lyosha [343]

Answer:

Answer A

Explanation:

atmosphere is made up of approx 78% N and 21% O2

5 0
2 years ago
By what quantity must the heat capacity be divided to obtain the specific heat of that material
masha68 [24]
<span>Heat capacity of an object, is the amount of heat energy or thermal energy (unit: Joule) needed to raise the temperature of the object by 1 degree celsius. Unit of heat capacity is J/°C 

Larger object will surely need larger amount of thermal energy to raise its temperature. If you compare 1 litre of water with 0.5 litre of water, the 1L water will have two times the heat capacity. 

It will be more useful to compare specific heat capacity, because then it is the amount of heat energy or thermal energy (unit: Joule) needed to raise the temperature of 1 unit mass of the object by 1 degree celsius. You can then compare between 1 unit mass of water and 1 unit mass of iron. 
Water has higher specific heat capacity than iron, meaning that you need more energy to heat up 1kg of water, then to heat up 1kg of iron. 

The unit will then be J/(kg °C) or J/(g °C).
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6 0
3 years ago
Calculate the molar mass of H2SO4 + 2 NaOH = Na2SO4 + 2 H2O. Please show all work. THANK YOU!
mr_godi [17]

Answer:

<em><u>30.11x1</u></em><em><u>0</u></em><em><u>²</u></em><em><u>³</u></em>

Explanation;

brainleist please

7 0
3 years ago
6. __________________________________________ is the measure of how much water vapor is in the air.
viva [34]

4% of the mass of air. Hot air can hold more water vapor than cold air, so the amount of water vapor is highest in hot, tropical areas and lowest in cold, polar regions

Explanation:

3 0
3 years ago
Read 2 more answers
How many moles of 02 are produced when 4 moles of h20 decompose?
Slav-nsk [51]

2H2O → 2H2 + O2

Moles of O2 = 4 mol H2O x (1 mol O2/2 mol H2O) = 2 mol H2

6 0
4 years ago
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