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mylen [45]
3 years ago
13

Help with chemistry pleaseWhich chemical reaction involves the most oxygen atoms?

Chemistry
1 answer:
Ratling [72]3 years ago
3 0
H2O is A chemical reaction of the most oxygen atoms
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If you travel 7.5 km and walk for 1.5 h, what is your average speed? <br> Show your work?
Assoli18 [71]
Answer: 5
Explanation: you divide the distance by the time and get the speed.
3 0
3 years ago
what are the elements of the following compounds: sodium bromide,zinc sulphide,lead oxide,magnesium nitride,potassium oixide​
Stella [2.4K]

Sodium , bromine zinc magnesium sulphur nitrogen potassium oxygen lead

4 0
2 years ago
Compare a mixture and a compound. How are they alike?
harina [27]

Answer:

1.Difference.

Mixtures are physically combined and can be separated by physical means while compounds are chemically combined and are separated by chemical means.

2.Mixtures do not have mixed boiling and melting points while compounds have mixed boiling and melting points.

2.Similarity.

Both mixtures and compounds are composed of two or more substances or elements combined.

Both can be separated.

7 0
2 years ago
Which of the following statements about balanced chemical equations is true?
miv72 [106K]

Answer:

The correct answer is They provide the molar ratio of reactant and products in a chemical reaction.

Explanation:

Balanced chemical equation helps us to calculate the number of moles of both reactant and product.For example

    2H2+O2=2H2O

From the above balanced equation it can be stated that 2 molecules of hydrogen(H2) reacts with 1 molecule of oxygen(O2) to form 2  molecules of water.

       

3 0
3 years ago
Read 2 more answers
A 2.40 kg block of ice is heated with 5820 J of heat. The specific heat of water is 4.18 J•g^-1•C^-1. By how much will it’s temp
MrMuchimi

Answer: The temperature rise is 0.53^0C

Explanation:

The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.

Q=m\times c\times \Delta T

Q = Heat absorbed by ice = 5280 J

m = mass of ice = 2.40 kg = 2400 g   (1kg=1000g)

c = heat capacity of water = 4.18J/g^0C

Initial temperature  = T_i

Final temperature = T_f  

Change in temperature ,\Delta T=T_f-T_i=?

Putting in the values, we get:

5280J=2400g\times 4.18J/g^0C\times \Delta T

\Delta T=0.53^0C

Thus the temperature rise is 0.53^0C

0 0
3 years ago
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