1 year ago

Why does the sand on a beach get so much warmer than the water on a sunny day?

1 answer:

5 0

It’s because sand is a poor conductor of heat so when the sun warms the sand, the heat is not disturbed evenly. Also the specific heat of sand is is lower than that of water.

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Name the following bases.

zheka24 [161]

Answer:

Explanation:

Ferric Hydroxide

3. 1

Fe. (OH)

Fe(OH)3

6 0

2 years ago

A solution was prepared by dissolving 2.2 g of an unknown solute in 16.7 g of CCl4. A thermal analysis was performed for this so

laila [671]

Answer:

Molar mass of unknown solute is 679 g/mol

Explanation:

Let us assume that the solute is a non-electrolyte.

For a solution with non-electrolyte solute remains dissolved in it -

Depression in freezing point of solution, $\Delta T_{f}=K_{f}.m$

where, m is molality of solute in solution and $K_{f}$ is cryogenoscopic constant of solvent.

Here $\Delta T_{f}=(-22.9^{0}\textrm{C})-(-28.7^{0}\textrm{C})=5.8^{0}\textrm{C}$

If molar mass of unknown solute is M g/mol then-

$m=\frac{\frac{2.2}{M}}{0.0167}mol/kg$

So, $5.8^{0}\textrm{C}=29.9^{0}\textrm{C}/(mol/kg)\times \frac{\frac{2.2g}{M}}{0.0167}mol/kg$

so, M = 679 g/mol

4 0

2 years ago

Which is NOT a component of galaxies? * F. Universe G. Stars H. Dust J. Planets

Afina-wow [57]

Answer:

F. Universe

Explanation:

Universe and Galaxies are two different things.

4 0

2 years ago

Number of moles in 37g of magnesium

Ne4ueva [31]

Rounded its 1.522 mol

3 0

2 years ago

Which of the following describes a double bond between two carbon atoms?

BlackZzzverrR [31]

Im pretty sure the answer is 4 but not 100 percent

5 0

3 years ago

Read 2 more answers