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Feliz [49]
3 years ago
12

PLEASE HELP!!!! 60 points

Chemistry
2 answers:
Tom [10]3 years ago
8 0

Answer:

d

d.d.d.d.d.d..d.d.d.d.d.d.d.d..d.d.d.d.d.d.d

Explanation:

lina2011 [118]3 years ago
7 0

Answer:

Have a nice Day , I would appreciate it if you could mark my answer brainliest

if 1 teacher cant teach all subjects how come 1 student can learn all subjects ?

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The molar mass of magnesium nitrate, Mg(NO3)2 is what?
maw [93]

Answer:

148g/mol

Explanation:

The molar mass of a compound is the sum of the molar masses of all the individual elements present in the compound.

Molar Mass of Mg(NO3)2 = 24 + 2[14 + (16x3)] = 24 + 2[14 + 48] = 24 + 2[62] = 24 + 124 = 148g/mol

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3 years ago
How are rare earth elements like neodymiun important to our technological world?
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2 years ago
PLEASE HELP I DONT UNDERSTAND A THING
Ymorist [56]

Answer:

I and III

Explanation:

6 0
3 years ago
Also need to know some of this stuff
irinina [24]

Answer:

answers are in attachment

Explanation:

1. Synthesis Reaction: In this type of reaction multiple reactant combine to form a single product.

2. Decomposition Reaction: In this type of reaction single compound or reactant break down into new elements or compounds.

3. Replacement Reaction: In this type of reaction an element replace an element in a compound.

4. Even hydrogen is not a metal but it can act as metal in single replacement reaction.

5. In combustion reaction fuel react with oxygen and give heat and light that increase temperature of surrounding.

6. In in-complete combustion reaction fuel react with in-sufficient oxygen and give carbon monoxide and carbon in form of soot.

7. Base is a compound that liberate OH⁻ ion in water.

8. indicators have different color in acid and base depends on pH of the solution

9. Salt and water are the product of neutralization reaction

               NaOH + HCl = NaCl + H₂O

10. The pH of neutral solution is 7.  

6 0
3 years ago
Be sure to use proper significant figures. The molecular weight of NaCl is 58.44 grams/mole. To prepare a 0.50 M solution: You w
Misha Larkins [42]
Your answer would be,
Molarity = moles of solute/volume of solution we needed, 29.22(g)(mol) of NaCI

= 29.22(g)/58.44(g)(mol^-1)(1)/1(L)
= 0.500(mol)(L^-1)



Hope that helps!!!
5 0
3 years ago
Read 2 more answers
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