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Brums [2.3K]
4 years ago
10

What happens when Ca(NO3)2 and Na2CO3 combine?

Chemistry
1 answer:
Kryger [21]4 years ago
5 0
When the two compounds are allowed to be in contact and reacts the product would be sodium nitrate (NaNO3) and calcium carbonate (CaCO3). This reaction is a double displacement reaction. The balanced equation is :
<span>
Ca(NO3)2 + Na2CO3 = 2NaNO3 + CaCO3</span>
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Why did Rutherford conclude that the atom was mostly empty space?
olga nikolaevna [1]
Rutherford came to this conclusion after his Gold-Foil experiment. He found that most of the alpha particales(when released) went straight through the gold foil, of which consisted of atoms. In the middle of the atom theres a small nucleus that has mass and positive charge. Because the nucleus is so small the alpha <span>particles were able to go straight through leading to the conclusion that atoms are mostly empty space. </span>
6 0
4 years ago
Use the periodic table to identify the element indicated by each electron configuration by typing in the chemical symbol for the
Schach [20]

Answer:

1s22s22p6: Ne 1s22s22p63s23p3: P 1s22s22p63s23p64s1: K 1s22s22p63s23p64s23d8: Ni 1s22s22p63s23p64s23d104p65s24d3: Nb

6 0
2 years ago
What do the rows of the periodic table indicate?
Tanya [424]

Answer:

The rows on the periodic table are called periods. All the elements in a period have valence electrons in the same shell. The number of valence electrons increases from left to right in the period. When the shell is full, a new row is started and the process repeats.

Explanation:

hope this helps..

3 0
3 years ago
A mass spectrum of an organic compound shows the relative abundances of M to be 40.58% and M 1 to be 7.022%. Assuming the peaks
sveticcg [70]

Answer:

The number of carbon atoms in the organic compound is 16.

Explanation:

The relative intensity of M + 1 peak (relative to M = 100) in organic compounds can be predicted by the following formula:

[M + 1] = (number of C x 1.07) ---------------------------------------------------- (1)

This formula can also be used to determine the number of carbon from the given intensity. But first, the intensity of [M + 1] relative to [M] = 100 needs to be determined, for which, consider the following calculations,

[M+1]=(\frac{M+1}{M}) (100)

[M+1]=(\frac{7.022}{40.58}) (100)

[M+1]=17.30

Using equation 1 we get,

number of C=\frac{[M+1]}{1.07}

number of C=\frac{17.3}{1.07}\\number of C = 16.168

or number of C = 16

The remaining value, 0.168, can be due to the isotopes of hydrogen and oxygen in the organic compound.

7 0
4 years ago
3.<br> Which statement(s) is/are TRUE for all chemical reactions?
kenny6666 [7]

Answer:

the statement is or are true for all chemical reaction is false

Explanation:

if you think the answer is correct then mark me as brain list

3 0
4 years ago
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