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2 years ago

True or false one example of a chemical reaction is when H20 melts and changes state ice to liquid

Chemistry

1 answer:

iogann1982 [59]2 years ago

6 0

Answer:

faulse

Explanation:

this is an example of a change in proporties

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NNADVOKAT [17]

Answer: I dunno that but u should give me brainliest

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2 years ago

Explain how H20 chemical formula describe a model of a water molecule?

nignag [31]

Its molecule contains one oxygen and two hydrogen atoms.

Explanation:

Water is a chemical substance with the chemical formula H2O. Water is a chemical substance with the chemical formula H2O. Its molecule contains one oxygen and two hydrogen atoms connected by covalent bonds.

Hope this helps ; )

5 0

3 years ago

What type of chemical reaction is Cu(NO3)2 + NaOH to Cu(OH)2 + NaNO3

bazaltina [42]

Answer:

Cu(NO 3) 2 (aq) + 2 NaOH (aq) → Cu(OH) 2 (s) + 2 NaNO 3 (aq) This is a precipitation reaction: Cu(OH) 2 is the formed precipitate.

Explanation:

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2 years ago

Which of the following is the definition of an adaptation?

Serggg [28]

Answer:

Explanation:

6 0

3 years ago

How many moles of gold are there in 14.2×1023 atoms of gold?

timofeeve [1]

Answer : The correct answer is 2.36 mol of gold

1 mole of any element have 6.022 x 10²³ number of atoms ( Avogadro's number).

So the formula relating mole and number of atoms is given as :

$Mole = \frac{given number of atom }{ 6.022 * 10^2^3 atom} * 1 mol$

Plugging value in formula :

$Mole = \frac{14.2 *10^2^3 }{6.022 x10^2^3} * 1 mol$

Mole of gold = 2.36 mol

4 0

3 years ago

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