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DENIUS [597]
3 years ago
14

BRAINLIESTTT ASAP!!! PLEASE HELP ME :)

Chemistry
1 answer:
Anvisha [2.4K]3 years ago
6 0

Science and Pseudoscience. [email protected] is a prefix meaning A [email protected] or [email protected] Pseudoscience is fake science, a collection of assertions that do not satisfy the requirements and practices of true science. ... No natural phenomena or processes previously unknown to science have ever been discovered by pseudoscience. Hope this helps!

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If 6.02*10^23 molecules of ammonia react with 12.04*10^23 molecules of hydrogen chloride, how many molecules are in the reaction
Helen [10]

Answer:

18.06 × 10²³ molecules

Explanation:

Add the two amounts of molecules together.

6.02 × 10²³  +  12.04 × 10²³  =  18.06 × 10²³

You will have 18.06 × 10²³ molecules in the vessel when the reaction is complete.  This is because of the Law of Conservation of Mass.  Mass is neither created nor destroyed in chemical reactions.  You will have the exact number of molecules in the reaction vessel as you did in the beginning.  The types of molecules may change, but the number will stay the same.

3 0
3 years ago
38 An aluminum sample has a mass of 80.01 g and a density of 2.70 g/cm3. According to the data, to what number of significant fi
Furkat [3]
The answer is (3) 3. The calculation rule of significant figures is when multiplication and division, the significant figures of result is equal to the least of the numbers involved. The significant figure of 2.70 and 80.01 is 3 and 4.
3 0
3 years ago
Read 2 more answers
MgCl2(at)+Br2(l)=MgBr2(at)+Cl2(g)<br><br> how do you write in a word equation
kotykmax [81]

aqueous Magnesium Chloride reacts with liquid Bromide to form aqueous Magnesium Bromide and Chlorine gas

6 0
3 years ago
When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 27.6 g of carbon were burned in the presence of
In-s [12.5K]

Answer:

The answer to your question is: 101.2 g of CO2

Explanation:

C = 27.6 g

O₂ = 86.5 g   remained 12.9 g

O₂ that reacted = 86.5 - 12.9 = 73.6 g

                     C     + O₂      ⇒        CO₂      The equation is balanced

                    27.6    73.6                 ?

MW               12        32                  44

Rule of three

                        12 g of C------------------  44 g  CO2

                       27.6 g C  ------------------    x

                  x = 27.6(44)/12 = 101.2 g of CO2

                       32 g of O2 ---------------    44 g of CO2

                        73.6 g of O2 ------------      x

                  x = 73.6(44)/32 = 101.2 g of CO2

6 0
3 years ago
What happened when bromine reacted with aluminum?
-Dominant- [34]

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:

4 0
2 years ago
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