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bagirrra123 [75]

3 years ago

15

A science teacher showed the class how potassium chromate changes color when it’s temperature change . Which of the following st

atements accurately supports whether potassium chromate had a physical or chemical change

1 answer:

GarryVolchara [31]3 years ago

8 0

Answer:

its b

Explanation:

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What is one thing people can do to reduce the amount of carbon in the

Nimfa-mama [501]

Answer:

B

Explanation:

Planting trees sequesters CO2

all of the other choices produce more CO2 in the atmosphere

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2 years ago

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2 years ago

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lubasha [3.4K]

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3 years ago

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A particular brand of gasoline has a density of 0.737 g/ml at 25 ∘c. how many grams of this gasoline would fill a 13.0 gal tank

Usimov [2.4K]

Density of gasoline is 0.737 g/mL and volume of tank is 13.0 gal.

Since, 1 US gal=3.78 L

Volume of tank in L will be:

$V=13.0 gal(\frac{3.78 L}{1 gal})=49.14 L$

Also, 1 L=1000 mL

Thus,

$V=49.14 L(\frac{1000 mL}{1 L})=49140 mL$

Mass of gasoline can be calculated as follows:

m=d×V

Here, d is density and V is volume thus,

$m=0.737 g/mL\times 49140 mL=3.62\times 10^{4}g$

Therefore, mass of gasoline will be $3.62\times 10^{4}g$ .

7 0

3 years ago

1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d8

MAXImum [283]

Answer:

Pd (palladium).

Explanation:

46 electrons total, this is representative of the Pd (palladium) element.

5 0

3 years ago