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oksano4ka [1.4K]
3 years ago
8

In what group and period element with atomic number 13 belongs​

Chemistry
1 answer:
hoa [83]3 years ago
8 0

Answer: The element with an atomic number of 13 is <em>aluminum</em>. It belongs in <em>group 13 (the boron group). </em>It belongs in <em>period 3</em>.

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Three different samples were on different types of balance for each sample. The three were found to weigh 0.1568934 ko. 1.215 mg
Dmitriy789 [7]

Answer:

Option d. 2615.0g

Explanation:

Let M1, M2, and M3 represent the masses of the three different samples

M1 = 0.1568934 kg = 156.8934g

M2 = 1.215mg = 1.215x10^-3 = 0.001215g

M3 = 2458.1g

Total Mass = M1 + M2 + M3

Total Mass = 156.8934 + 0.001215 + 2458.1

Total Mass = 2614.994651g

Total Mass = 2615.0g

4 0
3 years ago
What information is given by the superscripts in an electron configuration?
Paraphin [41]
<span>The superscripts in an electron configuration represents the number of electrons and protons in an element. </span>
8 0
3 years ago
Please help me with this answer correct
oksano4ka [1.4K]

Answer:

hope this helps :)

Explanation:

for the first one, you can look at the periodic table and look at the atomic number and it will show you how many protons there are giving you the answer because protons and electrons are equal in a pure element

a- carbon

b- neon

c- boron

d- oxygen

e- helium

f- hydrogen

g- lithium

h- beryllium

i- nitrogen

1- sulfur

2- S

3- 16

4- 32.066

5- 16

6- 16

7- 16.066

8- draw circles and put 16 dots like on the other page and in the middle put 16 nuetrons and electrons

9- 6 i think

5 0
2 years ago
Read 2 more answers
Which type of reaction?
polet [3.4K]
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addition polymerization is if you add the two polymers together like blocks and should have no byproducts

esterification is when you combine an organic acid with an alcohol. Since neither of the two polymers look like acids, you can rule this out.

never heard of saponification, Im an mechanical engineer not an organic chemist

3 0
3 years ago
LiOH+HBr---&gt; LiBr +h20 If you start with 10.0 grams of lithium hydroxide, how many grams of lithium bromide will be produced?
kicyunya [14]
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7 0
3 years ago
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