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3 years ago

Does pebbles dissolve in water?

Chemistry

2 answers:

Lyrx [107]3 years ago

6 0

Pebbles of salt or regular pebbles?
If it's regular pebbles than no

PolarNik [594]3 years ago

3 0

Hi there!

The answer is no.

Although the real answer depends on what the pebble is composed of (since different materials produce different effects), most pebbles don't dissolve in water.

Hope this helps!

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As you travel from a solid to a gas, energy is being absorbed or given off?

Wittaler [7]

Sublimation is solid to a gas, during the process of sublimation energy is absorbed.

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3 years ago

An element’s atomic number is the?

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3 years ago

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Determine the mass of 5.20 moles of C6H12 (gram-formula mass = 84.2 grams/mole).

muminat

Hello!

Determine the mass of 5.20 moles of C6H12 (gram-formula mass = 84.2 grams/mole).

We have the following data:

m (mass) = ?

n (number of moles) = 5.20 moles

MM (Molar mass of C6H12) ≈ 84.2 g/mol

Now, let's find the mass, knowing that:

$n = \dfrac{m}{MM}$

$5.20\:\:\diagup\!\!\!\!\!\!\!mol = \dfrac{m}{84.2\:g/\diagup\!\!\!\!\!\!\!mol}$

$m = 5.20*84.2$

$\boxed{\boxed{m = 437.84\:g}}\end{array}}\qquad\checkmark$

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I Hope this helps, greetings ... Dexteright02! =)

4 0

3 years ago

Read 2 more answers

How many pounds of ice are required to absorb 4900 kJ of heat as the ice melts? The heat of fusion of water is 0.334 kJ/g.

Goshia [24]

Answer:

m = 32.34 pounds of ice.

Explanation:

In this case we need to use the following expression of heat:

q = m * ΔHf (1)

Where:

q: heat absorbed in J or kJ

m: mass of the compound in g

ΔHf: heat of fusion of the water in kJ/g

We are asked to look for the mass of ice in pounds, so after we get the grams, we need to convert the grams to pounds, using the following conversion:

1 pound --------> 453.59 g (2)

So, we have the heat and heat of fusion, from (1) let's solve for the mass, and then, using (2) the conversion to pounds:

q = m * ΔHf

m = q / ΔHf

m = 4900 / 0.334 = 14,670.66 g of ice

Now, the conversion to pounds:

m = 14,670.66 g * 1 pound/453.59 g

<h2>m = 32.34 pounds of ice.</h2>

Hope this helps

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2 years ago

Plz help, have a quiz on this plz PLZ

katovenus [111]

Answer:

20.82

Explanation:

7 0

3 years ago