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amm1812
3 years ago
5

Water _____.

Chemistry
2 answers:
Harman [31]3 years ago
8 0
<h3><em>Expands when it freezes. Is your answer.</em></h3>
photoshop1234 [79]3 years ago
6 0
The first one is wrong because water has a ph level of 7.5. the second one is correct because the molecules in the liquid expand until it reaches its freezing point. the third one is wrong because liquids are less dense than solids. the fourth one is wrong because water dissolves into water.
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The primary gas in a volcano is: water vapor carbon dioxide sulfur dioxide nitrogen
Snezhnost [94]

Answer:

Water vapor

Explanation:

The magma consist of dissolved gases when these gases produce the force the volcanic eruption take place. The volcanic gases comes out and their volume is increased tremendously. The gases present in volcano are listed below:

The volcanic gases consist of water vapors, carbon dioxide and sulfur.

These three re the primary gases but the water is present in higher amount.

The percentage of water is 60%.

The carbon dioxide present in 10-40%.

Other gases present in valcano are nitrogen, argon, helium, neon methane and hydrogen.

7 0
3 years ago
Read 2 more answers
A chemist must dilute 61.9 mL of 548. nM aqueous sodium carbonate (Na2CO3) solution until the concentration falls to 484. nM . H
maw [93]

Answer:

The final volume will be "70.08 mL".

Explanation:

The given values are:

Molar mass,

M1 = 548 nM

or,

     = 5.48\times 10^{-7} \ M

M2 = 484 nM

or,

      = 4.84\times 10^{-7} \ M  

Volume,

V1 = 61.9 mL

V1 = ?

By using the expression, we get

⇒ M1\times V1=M2\times V2

or,

⇒            V2=\frac{M1\times V1}{M2}

By substituting the values, we get

                    =\frac{5.48\times 10^{-7}\times 61.9}{4.84\times 10^{-7}}

                    =\frac{339.212}{4.84}

                    =70.08 \ mL

7 0
3 years ago
What is the change of e-
Afina-wow [57]
E- is a negative electron
6 0
3 years ago
Which statement describes the masses of the particles that make up an atom?
Novay_Z [31]
The mass of the atom is equal to the sum of the number of protons and the number of neutrons. In a neutral atom, the number of protons is equal to the number of electrons.  The atomic number meanwhile of an atom is equal to the number of protons of the atom.
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A person walks north for 5 miles, then south for 8 miles, and then north for 6 more miles. The entire trip takes 8 hours.
Zinaida [17]

Answer:

I am not sure

Explanation:

5 0
2 years ago
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