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3 years ago

WILL AWARD 50 POINTS AND BRAINLIEST THANK YOUUU

Chemistry

2 answers:

Vadim26 [7]3 years ago

7 0

Iserge mo huhuhuhu nasapatalastas

adoni [48]3 years ago

6 0

Answer:

chemical symbol= Cl ( chlorine)

electrons= 17

2p electrons = 6

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a chemist is studying an unknown substance he can break it into its elemental only by using chemical means.Based on this observa

Vanyuwa [196]

Answer:

Compound

Explanation:

We want to know if it's a compound or a mixture.

An example of a mixture is salt water: you can heat it hot enough to boil off the water, leaving only the salt. This is a physical change, which is how you know it's a mixture.

Something like gold is a compound: if you heat it, or hit it, you'll still only have gold. You can only break it down by chemical means, which is how you know it's a compound.

4 0

3 years ago

Which of the following changes depending on the strength of the gravity field it is in?

Lelechka [254]

Im pretty sure it weight because when we are on different plants with a different amount of gravitational pull our weight changes

hope this helps :)

4 0

3 years ago

Read 2 more answers

A welding torch requires 602.1 L of ethylene gas at 2.77 atm. What will be the pressure of the gas if ethylene is supplied by a

Katarina [22]

PV=PV
(602.1 L)(2.77atm) = (110.6 L) (X atm)
1667.817=110.6X
15.07971971 atm = X
Rounds to 15.1 (sig figs so much fun)

8 0

2 years ago

What is (part of life)and(art of life)?someone will answer me

irinina [24]

Explanation:

Part of life is the role we certainly play during our role in life.Like a quote of shakespeare,we have our roles in earth to perform or we are like a chess whom we don't want to waste a move.

Art of life signifies that our life is wonderful with mysteries and hypotenic beauty and wonders and with different moments in a journey.

Keep smiling and hope u r satisfied with my answer.Have a great day :)

7 0

3 years ago

How many moles of Al would be produced from 20 moles of Al2O3? 2Al2O3 -> 4A1 + 302

Evgesh-ka [11]

<h3>Answer:</h3>

$\displaystyle 40 \ mol \ Al$

<h3>General Formulas and Concepts:</h3>

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Chemistry

Stoichiometry

Using Dimensional Analysis

<h3>Explanation:</h3>

Step 1: Define

[RxN - Balanced] 2Al₂O₃ → 4Al + 3O₂

[Given] 20 mol Al₂O₃

Step 2: Identify Conversions

[RxN] 2 mol Al₂O₃ → 4 mol Al

Step 3: Stoich

[DA] Set up: $\displaystyle 20 \ mol \ Al_2O_3(\frac{4 \ mol \ Al}{2 \ mol \ Al_2O_3})$
[DA] Multiply/Divide [Cancel out units]: $\displaystyle 40 \ mol \ Al$

Step 4:Check

Follow sig fig rules and round. We are given 1 sig fig.

Since our final answer already has 1 sig fig, there is no need to round.

4 0

3 years ago