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2 years ago

11

How are Venus and Earth similar? Group of answer choices They are close in size. They both have plate tectonics. They are about

the same distance from the Sun. They have atmospheres that are mostly carbon dioxide.

1 answer:

pentagon [3]2 years ago

7 0

Answer:

If this is multiple choice it would be: 1. Close in size, and 2. They are about the same distance from the sun.. Hopefully these will help.

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2. What would charge would you expect a magnesium atom to form?<br> O 2+<br> 017<br> 2

geniusboy [140]

Answer:

-2

Explanation:

Magnesium usually has a negative charge.

4 0

2 years ago

How to identify sodium hydroxide,hydrochloric acid,ans=d sugar solution when we only have blue litmus paper

elena55 [62]

Turmeric solution turns red in contact with bases and is not affected by acids and neutral substances. Put one drop of each liquid as the turmeric paper. The liquid whose drop turns the paper red is solution hydroxide (base).

4 0

2 years ago

Which correctly describes elements in the same group? select one:

Nadya [2.5K]

They have the same amounts of electrons

7 0

3 years ago

Consider the balanced equation. 2HCl + Mg MgCl2 + H2 If 40.0 g of HCl react with an excess of magnesium metal, what is the theor

Serga [27]

Answer:

Theoretical yield of hydrogen is 1.11 g

Explanation:

Balanced equation, $Mg+2HCl\rightarrow MgCl_{2}+H_{2}$

As Mg remain present in excess therefore HCl is the limiting reagent.

According to balanced equation, 2 moles of HCl produce 1 mol of $H_{2}$ .

Molar mass of HCl = 36.46 g/mol

So, 40.0 g of HCl = $\frac{40.0}{36.46}moles$ of HCl = 1.10 moles of HCl

Hence, theoretically, number of moles of $H_{2}$ are produced from 1.10 moles of HCl = $(\frac{1}{2}\times 1.10)moles=0.550moles$

Molar mass of $H_{2}$ = 2.016 g/mol

So, theoretical yield of $H_{2}$ = $(0.550\times 2.016)g=1.11g$

7 0

3 years ago

Read 2 more answers

I have no idea on how to do this here is the question (For the following pairs of atoms, show how they transfer valence electron

Maru [420]

Answer:

uhh

Explanation:

i hope you find this answer

3 0

2 years ago