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3 years ago

Which answer tells the reason the earth’s climate is getting warmer?

Chemistry

2 answers:

Soloha48 [4]3 years ago

5 0

Driving cars gives off gases that trap heat in the atmosphere

Aleksandr [31]3 years ago

4 0

Answer:

i think that cars give of energy that traps the heat thats why it be so hot out side

Explanation:

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A blue jay's small ,curved feet hepls it grip on branches.Which type of adption is this?

Bingel [31]

The answer is physical adaption.

5 0

3 years ago

Which of the following happens to the particles when the temperature of liquid water drops?

Vikki [24]

Answer:

The Kinetic energy decreases

Explanation:

because the speed of the molecules slows down.

6 0

3 years ago

A common laboratory method for preparing a precipitate is to mix solutions containing the component ions. Does a precipitate for

laiz [17]

Answer:

CaF2 will not precipitate

Explanation:

Given

Volume of Ca(NO3)2 $= 10$ ml

Molar concentration of Ca(NO3)2 $= 0.001$

Volume of NaF $= 10$ ml

Molar concentration of NaF $= 0.0001$

Ksp for CaF2 $= 3.2 * 10^ {-11}$

CaF2 will precipitate if Q for the reaction is greater than ksp of CAF2

Moles of calcium ion

$= 10 * 0.001\\= 0.01$

$[Ca2+] = \frac{0.01}{10 + 10} \\= \frac{0.01}{20} \\= 5 * 10^{-4}$

Moles of F- ion

$= 10 * 0.0001\\= 0.001$

$[F-] = \frac{0.001}{10 + 10} \\= \frac{0.001}{20} \\= 5 * 10^{-5}$

$Q = [Ca2+] [F-]^2\\= (5 * 10^{-4}) * (0.5* 10^-4)\\= 1.25 * 10^{-12}$

Q is lesser than Ksp value of CaF2. Hence it will not precipitate

5 0

2 years ago

Is water used to test cheese for protein

nekit [7.7K]

Answer:

yes

Explanation:

because it help the body hydrate

7 0

2 years ago

How many moles of C2H6 in 3.754 x 1023 molecules of C2H6?

ira [324]

Answer:

n=N/NA

n= 3.754×10²³/6.02×10²³

n= 6.24 s

Explanation

since there is number of molecules, make use of Avogadro's constant to get number of moles.

5 0

1 year ago