3 years ago

Which of the following statements is correct?

Chemistry

1 answer:

Elenna [48]3 years ago

5 0

I think its A. Low pressure indicates rising air, Which allows clouds to from.

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Warm air has a natural tendency to sink, independent of any outside force.<br> true or false

bezimeni [28]

Answer:

false

Explanation:

warm air rises

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3 years ago

Fusion is a type of _____. chemical reaction physical reaction nuclear reaction

Inessa05 [86]

Answer: Fusion is a type of nuclear reaction.

Explanation:

Nuclear reaction is defined as those reaction in which nucleus of an atom is involved. There are two types of nuclear reaction:

Fusion : In this type, two or more smaller atomic nuclei are combined together to form larger nucleus with release in energy
Fission : In this type, one large unstable nucleus breaks down into two smaller nuclei with release in energy.

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3 years ago

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An unknown metal sample has a mass : of 11.29. and a volume of 2 cm3. What is the : density of the unknown metal?

tatuchka [14]

Answer:

$\boxed{\sf Density \ of \ the \ unknown \ metal = 5.645 \ g/cm^3}$

Given:

Mass = 11.29 g

Volume = 2 cm³

To Find:

Density of unknown metal

Explanation:

Formula:

$\boxed{ \bold{Density = \frac{Mass}{Volume}}}$

Substituting value of mass & volume in the formula:

$\sf \implies Density = \frac{11.29}{2} \\ \\ \sf \implies Density = 5.645 \: g/cm^3$

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3 years ago

Examples of hard water

Ksju [112]

Answer:

lake water, swamp water, like, any dirty and unpurified forms of water is hard water

Explanation:

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A chemist determined by measurements that 0.050 moles of tin participated in a chemical reaction. Calculate the mass of tin that

stepladder [879]

Answer:

Explanation:

MM of I2 = 2 (127 g) = 254 g/mol

0.065 mol I2 x 254g I₂/ 1 mol I₂ = 16.5 g I2

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3 years ago

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