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Trava [24]
3 years ago
9

Help please? I really need to finish this. A response would be helpful :)

Chemistry
2 answers:
Fed [463]3 years ago
7 0

Answer:

do you have options that came with it

Explanation:

olga_2 [115]3 years ago
6 0
Number 2 is cells

Explanation: Tissues are groups of similar cells that have a common function
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Can some one work out this equation for me :)
Law Incorporation [45]

Yo sup??

CaCO3 + 2 HCl ---------> CaCl2 + H2O + CO2

This is the balanced chemical equation

Hope this helps

4 0
3 years ago
if a continental polar air mass is moving across the United States , what will likely happen to the regions of the country that
krek1111 [17]

Answer:

the same thing that happens to United states will happen to other regions

Explanation:

5 0
3 years ago
125 K = °C<br> A) 146<br> B)-146<br> C)398<br> D)-398
Mrrafil [7]
125 Kelvin turns into -146 C
4 0
3 years ago
Read 2 more answers
Ammonia gas combines with excess oxygen gas to produce nitric oxide and water. How many grams of ammonia gas would have to react
Sedbober [7]

Answer:

11.6g of NH₃(g) have to react

Explanation:

For the reaction:

4 NH₃(g) + 5 O₂(g) → 4 NO(g) + 6 H₂O(g) ΔH = -905kJ

<em>4 moles of ammonia produce 905kJ</em>

Thus, if you want to produce 154kJ of energy you need:

154kJ × (4 mol NH₃ / 905kJ) = <em>0.681moles of NH₃. </em>In mass -Molar mass ammonia is 17.031g/mol-

0.681mol NH₃ × (17.031g / mol) = <em>11.6g of NH₃(g) have to react</em>

3 0
3 years ago
SCIENCEEEE!!!!! HELPPPP!!!!
IRINA_888 [86]

pretty sure it's both are physical changes.

5 0
3 years ago
Read 2 more answers
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