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bagirrra123 [75]
2 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
Chemistry
1 answer:
GarryVolchara [31]2 years ago
8 0

Answer:

its b

Explanation:

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Nutritional biochemists have known for decades that acidic foods cooked in cast-iron cookware can supply significant amounts of
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The number of ferrous ions present in jar are 3.1x 10^21.

<h3>Steps</h3>

Since we have 737 g, 5,896 servings are generated.

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4 0
1 year ago
Science has had no negative impacts on society. Please select the best answer from the choices provided T F
PtichkaEL [24]

Answer:

false

Explanation:

not all science is good, or has good effects

7 0
3 years ago
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Empirical formula for 70.9% K and 29.1% S
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3 years ago
What are the Lewis definitions of an acid and a base? In what way are Bronsted definitions? they more general than the In terms
kati45 [8]

Explanation:

Lewis definition of Acids and Bases

Chemical species which are capable of accepting electron pairs or donating protons are called Lewis acid.

Chemical species which are capable of donating electron pairs or accepting protons are called Lewis base.

Bronsted definition of acids and bases

Chemical species which are capable of donating H+ are called Bronsted acids.

Chemical species which are capable of accepting H+ are called Bronsted bases.

So all Bronsted acids are Lewis acids but all Lewis acids are not Bronsted acids.

For a chemical species to behave as Lewis acid, they must have:

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For example, in BF3, octet of boron is incomplete, so it can accept a pair of electron and behaves as Lewis acid.

For a chemical species to behave as Lewis base, they must have:

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For example, NH3 and OH, both N and O have lone pairs of electrons, hence behave as Lewis base.

4 0
3 years ago
Which of the following is a physical change?
vodka [1.7K]
Hello,
A physical change describes a change that does physically and does not display “chemical” signs which are signs that indicate a precipitate being formed, change in color, density, or producing gas, etc. “Tearing a piece of paper in half” is a physical change because like I said earlier it doesn’t show any chemical change signs. I hope this helps you out!
6 0
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