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2 years ago

Total solar eclipse where only the corona is visible is called?

Chemistry

1 answer:

Vadim26 [7]2 years ago

3 0

Answer:

Chromosphere

Explanation:

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Ammonia, NH3, can be made by reacting nitrogen and hydrogen and the equation is N2 + 3H2 --> 2NH3 How many moles of NH3 can b

tino4ka555 [31]

8.66 or 8.67 if u round it off....

5 0

2 years ago

What is the atomic number of an atom that has 20 protons and 20 neutrons

vladimir2022 [97]

Answer:

Explanation:

Hi there!

We need to find the atomic number of an atom that has 20 protons and 20 neutrons

the atomic number of an atom is equivalent to the amount of protons an atom has, as the number of protons determines what element an atom is.

Since the atom has 20 protons, the atomic number of the said atom is <u>20</u>

Hope this helps!

5 0

3 years ago

Under standard-state conditions, which of the following half-reactions occurs at the cathode during the electrolysis of aqueous

Slav-nsk [51]

Answer:

The following reaction will occur at cathode:

$Ni^{+2}(aq)+2e--->Ni(s)$

Explanation:

The two half reaction during electrolysis of aqueous nickel sulfate will be

a) anode reaction :

Water will undergo oxidation and will evolve oxygen gas at anode as shown in the given reaction:

$2H_{2}O(l) ----> O_{2}(g) + 4H^{+}(aq) + 4e$

b) Cathode reaction: The reduction of Nickel ion will occur by gain of two electrons as shown in the given equation:

$Ni^{+2}(aq)+2e--->Ni(s)$

Thus the overall reaction will be:

$2H_{2}O(l) + 2Ni^{+2}----> O_{2}(g) + 4H^{+}(aq) + 2Ni(s)$

6 0

2 years ago

How many moles of h2o will be produced from 2.9 g of HCl reacting with Ca(OH)2?

Igoryamba

Answer:

0.080 mol

Explanation:

M(HCl) = (1.0 +35.5) g/mol = 36.5 g/mol

2.9g*1mol/36.5 g = 0.0795 mol HCl

Ca(OH)2 + 2HCl ---> CaCl2 + 2H2O

from reaction 2 mol 2 mol

given 0.0795 mol x mol

x = 0.0795 mol ≈0.080 mol

7 0

2 years ago

Which of the following statements describes electromagnetism?

loris [4]

Answer:

Explanation:

7 0

3 years ago