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Ksju [112]
2 years ago
14

How many atoms are in 4.90 mol of Al2O3

Chemistry
1 answer:
Finger [1]2 years ago
4 0

Answer:

12 g of 12C to three significant figures maybe?

Explanation:

tell if correct or not im sorry fi it isnt :c

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What must happen for heat to be transferred by convection?
Inessa05 [86]

Answer: The heat transfer by convection requires a solid-fluid interface, a temperature difference between the solid surface and the surrounding fluid and a motion of the fluid. The process of heat transfer by convection would occur when there is a movement of macro-particles of the fluid in space from a region of higher temperature to lower temperature.

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6 0
3 years ago
What will happen when we add 5 grams of sugar to 100 grams of water?<br> Plz tell
Anarel [89]
<h3>♫ :::::::::::::::::::::::::::::: // Hello There ! //  :::::::::::::::::::::::::::::: ♫</h3>

➷  It will most likely dissolve in the water. This is due to the sugar being a soluble substance.

Any further queries, let me know.

<h3><u>❄️</u></h3>

➶ Hope This Helps You!

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8 0
2 years ago
Read 2 more answers
When a solution of beryllium sulfate and calcium hydroxide are mixed, what precipitate if any is formed
klasskru [66]

Answer:

CaSO₄ (calcium suflate) is the precipitate formed

Explanation:

We can think the reactants:

BeSO₄ → Beryllium sulfate

Ca(OH)₂ → Calcium hydroxide

The reaction is:

Be₂SO₄  +  Ca(OH)₂  →  CaSO₄ ↓  +  Be(OH)₂

We call it as a double-replacement reaction because two ions exchange places from 2 compounds to form two new compounds.

Sulfates can always make precipitate with the elements from group 2, Ca, Ba and Mg.  

Hydroxides from group 2 are solubles, so we complete states:

BeSO₄ (aq)  +  Ca(OH)₂ (aq)  →  CaSO₄ ↓ (s)  +  Be(OH)₂ (aq)

5 0
2 years ago
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NNADVOKAT [17]

Answer:

3.6*10^7

Explanation:

I hope this helped you... Have a nice day.. UWU

5 0
2 years ago
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ludmilkaskok [199]

Explanation:

if they aren't in a solvent, then you magnetize first, to remove the iron fillings, secondly, you can sieve to separate the sand and pebbles

8 0
2 years ago
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