GIVEN BRAINLIEST

Chemistry

1 answer:

borishaifa [10]3 years ago

4 0

Answer:

The planet Neptune

Explanation:

This cannot be seen in the laboratory, it is a research that can be done out of the laboratory which on the field

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What isotope has 45 protons and 57 neutrons

anastassius [24]

…Answer:

Explanation:

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2 years ago

Water has a density of 1.00 g/mL. If you put an object that has a density of 0.79 g/mL into water, it will sink to the

Debora [2.8K]

Answer:

False

Explanation:

An object with a density greater than 1.00g/mL (greater than the density of water) will sink. An object with a density less than the density of water, will float.

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3 years ago

The freezing point of ethanol, CH3CH2OH, is -117.300 °C at 1 atmosphere. Kf(ethanol) = 1.99 °C/m

MAXImum [283]

Answer : The molecular weight of this compound is 891.10 g/mol

Explanation : Given,

Mass of compound = 12.70 g

Mass of ethanol = 216.5 g

Formula used :

$\Delta T_f=i\times K_f\times m\\\\T_f^o-T_f=i\times T_f\times\frac{\text{Mass of compound}\times 1000}{\text{Molar mass of compound}\times \text{Mass of ethanol}}$