3 years ago

Color of the CuCl2 hydrate before heating:

Chemistry

1 answer:

Lady bird [3.3K]3 years ago

7 0

hydrated cucl2 have blue-green colour

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True or False, the central atom in a molecule is the one with the highest electron affinity.

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False. Chlorine has the most.

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3 years ago

Balance this equation: Al+ HNO3 ---- H2 + Al(NO3)3

romanna [79]

Answer:

2Al+ 6HNO3 ---- 3H2 + 2Al(NO3)3

Explanation:

Put coefficient a,b,c, and d for calculation:

a Al + b HNO3 = c H2 + d Al(NO3)3

for Al: a = d

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for N: b = 3d

for O: 3b = 9d

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3 years ago

Which is stronger ph4 or ph6

Temka [501]

Answer:

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Explanation:

4 is the only moderate

5 - 6 are weak acids

0 - 3 are strong

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3 years ago

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an ionic compound is typically made of a. two metals. b. two nonmetals. c. a metal and a nonmetal. d. none of the above.

kirill115 [55]

C. a metal and a nonmetal

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3 years ago

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Compare 1 mole of H2, 1 mole of O2, and 1 mole of F2. (a) Which has the largest number of molecules? Explain why. (b) Which has

AURORKA [14]

a) Answer:

Number of molecules in 1 mole

Explanation:

a) Whether we take any of the substance among all three of the given substances they will have the same number of molecules in 1 mole of the substance is considered and the value for this will be $6.023 x 10^23$

b) Answer:

In the given question mass of the substance which is greatest is asked for one mole and we also know that mass of one mole is given by molar mass.

Explanation:

b) It is known that $31.98g/mol$ is the molar mass for oxygen which is greater than that of hydrogen while fluorine has a molar mass of $38.0 g/mol$ which on comparison shows that, it is the highest amongst all three.

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3 years ago