NaOH + CH3COOH yields Na CH3COO + H2O
2HNO3 + Ca(OH)2 yields Ca(NO3)2 + 2H2O
H2SO4 + 2NaCl yields 2HCl + Na2SO4
(2 Points)
A. mass x speed
B. 1/2 mass x velocity
C. mass x velocity
D. 1/2 mass x velocity squared
Answer:
D
Explanation:
b. carbon-12
c. uranium-236
d. uranium-238
It consists of a single element or compound.
It may have substances in different states of matter.
It is very difficult to separate the components.
The proportion of the particles that make it up cannot be altered.
Answer:
B
Explanation:
It may have substances in different states of matter
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Answer:
The amount of energy release a reaction is depended on how strong the binding energy hold the particles together
In nuclear reaction, they're breaking nucleus bind apart , which create a huge amount energy that cause by the separation of the bind. The amount is far greater than in chemical reaction which only separate the binds of electrons.
Explanation:
The molar mass of NH3 is 17.03 g/mol. The molar mass of H2 is 2.0158 g/mol. In a particular reaction, 0.575 g of NH3 forms. What is the mass, in grams, of H2 that must have reacted, to the correct number of significant figures?
0.1
0.102
0.10209
0.1021
Answer : The mass of in grams is 0.102g.
Solution : Given,
Molar mass of = 17.03 g/mole
Molar mass of = 2.0158 g/mole
Given Mass of = 0.575 g
First we have to calculate the moles of .
= = 0.0337 moles
The given balanced equation is,
From the above reaction, we conclude that
2 moles of produced from 3 moles of
then the 0.0337 moles of produces to give moles of
The moles of = 0.0505 moles
The mass of = Moles of × Molar mass of = 0.0505 moles × 2.0158 g/mole = 0.10179 g
The mass of in the correct number of significant figures is 0.102 g.