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Degger [83]
3 years ago
6

What happened when bromine reacted with aluminum?

Chemistry
1 answer:
-Dominant- [34]3 years ago
4 0

Answer:

The reaction begins and builds up heat. This heat causes the aluminum to melt and float on top of the liquid bromine. Wherever the two elements meet, sparks, heat, and light are given off.

Explanation:

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In a chemical reaction how does the mass of the reactants compare with the mass of the products?
Juli2301 [7.4K]

Answer:

The mass of the reactants compared with the mass of the products should be the same if the reactants are in stoichiometric amounts.

Explanation:

In this question, they ask about chemical reactions and the comparison of the mass of reactants and products. Firstly, it is necessary to introduce the mass conservation principle.

Mass conservation principle mentions that in a chemical reaction, the total mass of reactants is equal to the total mass of products (if the reaction is fully developed). It means mass is not created or destroyed, only transforms from reactants to products.

For example, the mass of sodium plus the mass of chlorine that reactswith the sodium equals the mass of the product sodium chloride.Because atoms are only rearranged in a chemical reaction, there mustbe the same number of sodium atoms and chlorine atoms in both thereactants and products.

Finally, we can conclude that The mass of the reactants compared with the mass of the products should be the same if the reactants are in stoichiometric amounts. 

6 0
3 years ago
If 155 grams of potassium (K) reacts with 122 grams of potassium nitrate (KNO3), what is the limiting reagent?
GenaCL600 [577]
K:

m=155g
M=39g/mol

n = 155g / 39g/mol ≈ 3,97mol

KNO₃:

m=122g
M=101g/mol

n = 122g/101g/mol = 1,21mol

2K          +            10KNO₃  ⇒  6K₂O + N₂
2mol        :            10mol
3,97mol   :           1,21mol
                             limiting reagent

KNO₃ is limiting reagent

5 0
3 years ago
Based on this chart, what percentage of energy comes from fossil fuels?
Julli [10]

Answer:

37%+24%+23%=84% , i wish my answer is correct

8 0
3 years ago
How many moles of oxygen are prosent in 169 of oxygen gas?​
slamgirl [31]

Answer:

Number of moles=Mass/ Molar Mass 169g÷32g/mol= 5.281 mol

6 0
3 years ago
Read 2 more answers
When mantle rocks near the radioactive core are heated, they become less dense than the cooler, upper mantle rocks. These warmer
lapo4ka [179]
C) convection currents
7 0
3 years ago
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