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prisoha [69]
4 years ago
14

Why are changes of state, for example, liquid water changing to steam, not considered to be chemical changes?

Chemistry
1 answer:
GREYUIT [131]4 years ago
5 0

Answer:

A liquid changing to a gas is considered a physical change because it involves a change in one or more physical properties, but no change in the fundamental components that make up the substance.

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What is formed called when air masses with different characteristics meet
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So, when two different air masses meet, a boundary is formed. The boundary between two air masses is called a front. Weather at a front is usually cloudy and stormy. There are four different fronts- Cold, Warm, Stationary, and Occluded.
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3 years ago
What is the chemical formula of sulfur dioxide? A. SO B. SO2 C. SO3 D. S2O
Stels [109]
B: SO2
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6 0
3 years ago
If only 65.2 g of zinc (II) chloride is obtained, what is the percent yield from the reaction?
CaHeK987 [17]

Answer:

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6 0
3 years ago
When forming bonds, atoms tend to acquire a stable electron configuration as in having 8 valence electrons. This is an example o
liubo4ka [24]

Answer:

The octet rule refers to the tendency of atoms to prefer to have eight electrons in the valence shell. When atoms have fewer than eight electrons, they tend to react and form more stable compounds. When discussing the octet rule, we do not consider d or f electrons.

Explanation:

7 0
4 years ago
If 3.50 moles of sodium chloride is added to your food, how many grams is added?
Ksenya-84 [330]

Answer:

204.8g

Explanation:

The number of moles of a substance is related to its mass and molecular mass as follows:

mole (n) = mass (m) ÷ molar mass (MM)

According to this question, 3.50 moles of sodium chloride (NaCl) is added to a food.

Molar mass of NaCl = 23 + 35.5

= 58.5g/mol

Using mole = mass/molar mass

Mass = molar mass × mole

Mass = 58.5g/mol × 3.5mol

Mass = 204.75

Mass = 204.8grams.

Therefore, 204.8grams of NaCl or common salt was added to the food.

7 0
3 years ago
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