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Maru [420]
3 years ago
12

Plz help me I Am timed plz

Chemistry
1 answer:
nexus9112 [7]3 years ago
3 0

Answer:

D) Trees

Explanation:

I'm sure its trees, because once you cut all trees you cant regenerate, or replenish them. hope im right, sorry of its wrong!!

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2AI + 3H2SO4 -> Al2(SO4)3 + 3H2
podryga [215]

Answer:

B. 313.8

Explanation:

6 0
3 years ago
a motorcycle is moving along a road for a distance of 20KM. After 2 hours what is it's the average speed?
JulijaS [17]

Answer:

If it took the motorcycle 2 hours to cover 20km, then the average speed is 10km per hour.

Explanation:

Speed is equal to distance over time. So 20km divided by 2 hours is 10 km per hour.

Please mark brainliest!!! Thanks.

6 0
3 years ago
Read 2 more answers
Indicate the number of unpaired electrons for following:
Viktor [21]
Ignoring the n's, there would only be one unpaired electron. 
6 0
4 years ago
How many atoms are in one molecule of Iron II sulfate
dezoksy [38]
Answer:
             The number of atoms contained by one molecule of Iron (II) Sulfate are 6.

Explanation:
                   Iron (II) Sulfate is mage up of two parts. One is the Positive part which constitutes of Fe⁺² and a negative part which constitutes of a polyatomic anion i.e. SO₄²⁻. As there are four Oxygen and one sulfur atom in sulfate Ion so sulfate ion contains 5 atoms in total. Therefore, five atoms from sulfate iona dn one atom of Iron ion makes a total of 6 atoms in one molecule of Iron (II) Sulfate.
5 0
3 years ago
A 20.00 g mixture of magnesium and zinc metal reacting with excess hydrochloric acid produced 1.152 g of hydrogen gas. what is t
mafiozo [28]

percentage of zinc= 5.985/20 X 100= 29.5%

let x represents zinc and y be magnesium so

Zinc(s) + 2HCl(aq) -----> ZnCl2(aq) +  H2(g)

Mg(s) + 2HCl(aq) -----> MgCl2(aq) + H2(g)

1.152 g of hydrogen gas=( x/65.3 + y/24.305) 20

= 3.08 x10^-2 + 0.8295-8.30

=x=5.985

y= 4.015

percentage of zinc= 5.985/20 X 100= 29.5%

The hydrogen gas escapes, so the two products of Zinc Chloride and Magnesium Chloride will then react with Silver Nitrate. Again, I combine both of the reactions

To learn more about zinc:

brainly.com/question/13890062

#SPJ4

7 0
2 years ago
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