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natulia [17]
3 years ago
9

State two similarities between the modern day periodic table and Mendeleev’s table.

Chemistry
1 answer:
Marat540 [252]3 years ago
6 0
Arranged in groups and periods.
Group 1 in the same place.
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How many molecules are in 4 moles of carbon monoxide (CO)?
ladessa [460]

Answer:

A

Explanation:

because number of particle = moles × 6.02 × 10^23

which gives the answer as an A

8 0
3 years ago
What is the name for CH3-CH2-CH2-O-CH2-CH3?
BabaBlast [244]

Answer:

idk maybe chlorine 12

Explanation:

6 0
3 years ago
A man walked 1560 meters in 16000 seconds what is the speed at which he walked
Maslowich
In what meters? miles an hour? i can’t answer unless i know that
5 0
2 years ago
Which of these statement(s) is/are true about a balloon filled with 1.00 mol N2 (g) at STP?
lara [203]

Answer:

I. The balloon has a volume of 22.4L

III. The balloon contains 6.022x10^23 molecules.

Explanation:

At stp, it has been proven that 1mole of a gas occupy 22.4L.

Therefore, option (i) is correct.

The molar mass N2 = 14.01 x 2 = 28.02g/mol

Number of mole of N2 = 1 mole

Mass of N2 =..?

Mass = mole x molar Mass

Mass of N2 = 1 x 28.02 = 28.02g.

The mass content of the balloon is 28.02g, therefore, option (ii) is wrong.

From Avogadro's hypothesis, we understood that 1 mole of any substance contains 6.02x10^23 molecules. This implies that 1 mole of N2 also contains 6.02x10^23 molecules

Therefore, option (iii) is correct.

The correct options to the question are:

Option i and option iii

7 0
3 years ago
Read 2 more answers
The nucleus of the atom contains what subatomic particle(s)? Protons only Neutrons only Electrons only Protons and neutrons Prot
lakkis [162]
Hello,

The answer is option C protons and neutrons.

Reason:

The middle of the nucleus contains the protons and the neutrons which contain the positive and electrical charges which decides the element which means option C will be your answer.

If you need anymore help feel free to ask me!

Hope this helps!

~Nonportrit 
4 0
3 years ago
Read 2 more answers
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