2 years ago

What is added to make solid ice change to liquid water and then to gaseous steam.

Chemistry

1 answer:

vekshin12 years ago

8 0

Answer: heat

Explanation: if solid ice is heated it becomes in liquid and then to gaseous steam.

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Calculate the [H3O+] of an aqueous solution that is 2.42 × 10−7 M in OH−.

kompoz [17]

Answer:

The (H30+) is 4,13x10-8

Explanation:

We use the formula

Kwater = (H30 +) x (OH-)

1.00e-14 = (H30 +) x 2.42e-7

(H30 +) = 1.00e-14 / 2.42e-7 = 4.13e-8M

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3 years ago

A chemistry student needs 30.0 g of acetic acid for an experiment. He has available 1.2 kg of a 7.58% w/w solution of acetic aci

Tomtit [17]

Answer:

The mass of solution will be "395.78 g".

Explanation:

Given:

Mass of acetic acid,

= 30 g

Percentage,

= 7.58% w/w

Now,

⇒ % $=\frac{Mass \ of \ acetic \ acid}{Mass \ of \ solution}\times 100$

By putting the values, we get

⇒ $7.58=\frac{30}{Mass \ of \ solution}\times 100$

⇒ $Mass \ of \ solution=\frac{30\times 100}{7.58}$

⇒ $=\frac{3000}{7.58}$

⇒ $=395.78 \ g$

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2 years ago

Molar mass of acetone(CH3COCH3)

ladessa [460]

58.08 g/mol

Formula: C3H6O
Melting point: -139°F (-95°C)
Density: 784 kg/m³

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3 years ago

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How are the valence electrons organized to form a bond between the atoms

Elina [12.6K]

Answer: add up to eight

Explanation: NaO as one bond as it takes only one and seven to make eight. Leaving NaO with three lone pairs

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2 years ago

Limestone is used to make cement and mortar. <br> a. True <br> b. False

marusya05 [52]

The awnser is true maybe

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2 years ago