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Alexxx [7]
3 years ago
8

The scientific theory of _________ states that populations change over time in response to changes in the environment.

Chemistry
1 answer:
Leto [7]3 years ago
5 0
Natural selection I think
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Which of the following affect climate ?​
liberstina [14]

Answer:

d

Explanation:

the farther you are from the equater the dolder it is.

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2 years ago
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The sun is 150 kilometers from earth.if you wanted to explain to friend how far is what would you say
jasenka [17]

Answer:

150 times 1000 is how many meters it is away from earth because kilo means 1000

Explanation:

easy metric conversions

5 0
3 years ago
If an atom has 3 protons, 3 electrons and 2 neutrons, what is the atom's electrical charge?
babymother [125]
The atoms electrical charge would be 0. As the electrical charge is calculated by taking the number of protons and subtracting it by the number of electrons. In this case the result is 0. (3-3).
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2 years ago
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A sample of 1.00 moles of oxygen at 50°C and 98.6 kPa, occupies what volume?
enyata [817]

Answer:

27.22 dm³

Explanation:

Given parameters:

number of moles = 1 mole

temperature= 50°C, in K gives 50+ 273 = 323K

Pressure= 98.6kpa in ATM, gives 0.973 ATM

Solution:

Since the unknown is the volume of gas, applying the ideal gas law will be appropriate in solving this problem.

The ideal gas law is mathematically expressed as,

Pv=nRT

where P is the pressure of the gas

V is the volume

n is the number of moles

R is the gas constant

T is the temperature

Input the parameters and solve for V,

0.973 x V = 1 x 0.082 x 323

V= 27.22 dm³

5 0
3 years ago
What is the mass of 0.572 moles of Al?
kozerog [31]
Answer: 15.433704

Use the periodic table to check the atomic mass, this is the number of grams per mole → 1 mole of Aluminum is 26.982 g
5 0
2 years ago
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