Ask question

Ask question

All categories

3 years ago

11

PLEASE HELP ME!

1 answer:

kifflom [539]3 years ago

4 0

Explanation:

a. Magnesium oxide is used mainly in soil treatment and groundwater remediation, wastewater treatment, etc. it is used for it's acid buffering capacity and effectiveness in dissolving heavy metals.

b. MgO is the chemical equation for the reaction.

c. multiply the given mass of O2 by the inverse of it's molar mass. multiply the molar ratio (from the balanced equation) between O2 and MgO. Multiply by the molar mass of MgO. 32g O2 x 1 mol O2 ... 32g O2 x 2mol MgO 1mol O2 x 40g MgO. .... 1mol MgO = 80 g.

d. Mg (s) + 2 HCl (aq) produces MgCl 2(aq) + H 2 (g). Where the letter "s" stands for solids, and "g" is for gas and "aq" represents aqueous solution.

You might be interested in

How do you pass sience

MariettaO [177]

Answer:

Listen in Class. The first step to passing any test is to begin preparing right there in the classroom. ...

Review Lab and Lecture Notes. ...

Know the Vocabulary. ...

Develop a Study Schedule. ...

Take Advantage of Online Study Resources.

Explanation:

8 0

3 years ago

How many milliliters of a 1.25 molar hydrochloric acid (HCl) solution would be needed to react completely with 60.0 grams of cal

stich3 [128]

<u>Answer:</u>

2400 mL

<u>Explanation:</u>

$Ca + 2HCl \implies CaCl_2 + H_2$

According to this equation, the stoichiometric ratio between $Ca$ and $HCl$ for the complete reaction is 1:2.

We know that the number of moles of $Ca$ can be calculated using the mole formula. (<em>number of moles = mass / molar mass</em>)

Moles of Calcium = $\frac{60}{40}$ = 1.5 mol

So the moles of $HCl$ = $1.5 \times 2$ = 3.0 mol

<em>Volume of HCl solution = Moles of HCl/ concentration of HCl</em>

Volume of HCl solution = $\frac{3}{1.25}$ = 2400 mL

4 0

3 years ago

This electron cloud model of aluminum has _______ energy levels with _______ electrons on its outer energy level. A) 1, 2 B) 2,

Talja [164]

Answer:

C

Explanation:

Have anice day

7 0

3 years ago

Warwick Police discovered the body of a 36-year-old white male (later identified as Darren Davis) in a field about 20 miles nort

lina2011 [118]

I think it was sue to she has all the details to seem like it was her

7 0

3 years ago

Read 2 more answers

If you put hydrogen (H1+) and Hydroxide (OH1) together what it’s it called?

Tamiku [17]

Answer:

The hydroxyl ions (OH-) released will combine with any hydrogen ions (H+) in the solution to form water molecules (OH- + H+ = H2O).

Explanation:

3 0

3 years ago