2 years ago

SOMEONE PLEASE HELP ME WILL MARK BRAINLIEST PLEASE!!

Chemistry

1 answer:

Sholpan [36]2 years ago

4 0

moles of oxygen: 1/2 x moles of water

= 1/2 x 7.8 = 3.9

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Can someone help I have to much stuff to do tonight so any help is appreciated.

Anit [1.1K]

Sorry I'm not in chemistry but do you have any other work

6 0

3 years ago

Write the charge balance for a MgSO 4 and NaNO 3 solution that contains H + , OH − , Mg 2 + , HSO − 4 , SO 2 − 4 , MgHSO + 4 , M

irga5000 [103]

Answer :

$MgSO_4$ solution contains $Mg^{2+}$ and $SO_4^{2-}$

$NaNO_3$ solution contains $Na^{+}$ and $NO_3^{-}$

Explanation :

Ionic compound : It is defined as the compound which is formed when electron gets transferred from one atom to another atom.

All the polyatomic ions always form an ionic compound.

Polyatomic ions : It is a charged species that composed of two or more atoms and these charged species are bonded by the covalent bond.

The given compounds are, $MgSO_4$ and $NaNO_3$

$MgSO_4$ is an ionic compound which is formed by the combination of $Mg^{2+}$ cation and $SO_4^{2-}$ anion.

and,

$NaNO_3$ is an ionic compound which is formed by the combination of $Na^{+}$ cation and $NO_3^{-}$ anion.

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3 years ago

astronauts brought back 500 lb rock samples from the moon. how many kilograms did they bring back (1 kg = 2.20 lbs)

tigry1 [53]

Astronauts brought back 500 lb of rock samples from the moon. How many kilograms did they bring back? (1 kg = 2.20 lb)

A. 500 kg

B. 1,100 kg

C. 498 kg

D. 227 kg

I believe it is D.

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3 years ago

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This is the question!!!

artcher [175]

Answer:

I think it's G

Explanation:

3 0

3 years ago

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AHELP HELP HELP PLZZZZZZ

8_murik_8 [283]

Answers:

25. Earth's galaxy

26. The asteroid belt

27. Copernicus

28. Ptolemy

if this helped brainliest

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3 years ago