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kicyunya [14]
3 years ago
13

HELP PLEASE ASAP I need a good explanation

Chemistry
1 answer:
Lerok [7]3 years ago
6 0

Answer:

B

Explanation:

Hellium is a gas...

Solids are particles that are packed together

liquids are particles that are together but conforme to their container

gas have space between them and conform to their holder

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how many grams of the excess reactant are left over according to the reaction below given that you start with 10.0 g of al and 1
yan [13]

Answer:

divide 10.0g by each reactant's respective molar mass then divide that number by its coefficient in the balanced reaction. the smaller of the two numbers indicates the limiting reactant - it’s Al

4 0
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What is the answer to mad of two or more substances together in the same place but not chemically combined
Kazeer [188]
I'm quite sure the 'F' is a mistake, and the word is MIXTURE.
8 0
3 years ago
Which of the following groups have seven valence electrons and are very reactive?
valina [46]

Answer:

Column 17 halogens

Explanation:

To answer the question we need to know the following;

What are valence electrons?

  • Valence electrons are outermost electrons in the outermost energy level of an atom of any element.

What are halogens?

  • Halogens are group 7 elements that have seven valence electrons. They include, chlorine, fluorine, iodine, etc

What is the reactivity of halogens?

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4 0
3 years ago
Read 2 more answers
4 Na + O2 → 2 Na2O<br><br> 6.79 moles of O2 will react to form how many moles of Na2O?
Nataly_w [17]

Answer:

13.94moles of Na₂O

Explanation:

The balanced reaction expression is given as:

        4Na  +  O₂  →   2Na₂O

Given parameters:

Number of moles of O₂ = 6.97moles

Unknown:

Number of moles of Na₂O

Solution:

 To solve this problem;

            1 mole of O₂  will produce 2 moles of Na₂O ;

            6.97 moles of O₂ will produce 6.97 x 2  = 13.94moles of Na₂O

6 0
3 years ago
In a reaction, NH3, yields NH4+"
taurus [48]

Answer:

a. NH gain a proton

b. NH is a Bronsted-Lowry base because is capable of accepting a proton

Explanation:

7 0
4 years ago
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