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posledela
3 years ago
9

Which of the following reactions involves two or more substances combining to form a new compound?

Chemistry
1 answer:
lozanna [386]3 years ago
5 0
What are the choices?
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A 12.8-g sample of sodium completely reacts with 19.6 g of chlorine to form 32.4 g of sodium chloride. These data are A 12.8-g s
coldgirl [10]

Answer: The data are consistent with the law of conservation of mass because the mass of reactants equals the mass of products

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

Given: mass of sodium = 12.8 g

mass of chlorine = 19.6 g

mass of reactants = mass of sodium + mass of chlorine = 12.8 g + 19.6 g = 32.4 g

Mass of product = Mass of sodium chloride = 32.4 g

As mass of reactant = mass of products , Thus results are in accordance with the law of conservation of mass.​

5 0
3 years ago
A smaller gear driving a larger gear gives a blank advantage (called blank gears) 
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Jduddhhdid sewer feeder dad
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3 years ago
The entropy of vaporization of water is 109.0 j/mol × k at its normal boiling point. what is the enthalpy of vaporization of wat
riadik2000 [5.3K]
The entropy of a system can be calculated by the ratio of the total heat in the system and the temperature. Entropy is a measure used in thermodynamics to approximate the degree of disorder in a system. From the equation for entropy, we can calculate the enthalpy as follows:

S = H / T
109.0 J / mol K = H / 373.15 K
H = 40673.35 J / mol
3 0
3 years ago
Can somebody please help me please?
Mrrafil [7]

Answer:

22 in total but round it up to 23

3 0
3 years ago
What is the difference between a solid and a gas
dem82 [27]

Answer:

Gas is for example oxygen or the air we breath and liquid is water.

Explanation:

6 0
3 years ago
Read 2 more answers
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