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abruzzese [7]
4 years ago
6

Pls help me with this!!

Chemistry
1 answer:
aleksklad [387]4 years ago
8 0

Answer:

B. 65

Explanation:

arrange your numbers as:

63,64,66,69

add 64 and 66 together to get 130 then divide by 2

-or just think about what number is between 64 and 66

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The graph below shows how the temperature and volume of a gas vary when
Eddi Din [679]

Answer:

D

Explanation:

PV =nRT

So V and T are inversely proportional

7 0
3 years ago
PLEASE HELP WILL MARK BRAINLIST
postnew [5]
2.63% error

Take the formula for percent error

Accepted value minus experimental value over accepted value then multiplied by 100.

The experimental value is 4.29
The accepted value is 4.18

4.18-4.29/4.18 x 100

Use absolute value if negative

2.63% percent error

5 0
2 years ago
An ion of magnesium has 12 protons and a charge of +2. how many electrons are in this ions
natima [27]
Protons=electrons(12 electrons)
however it has a charge of +2 which means it loses two electrons, thus, there are 10 electrons.
6 0
4 years ago
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andrew-mc [135]
The above reaction is a single replacement reaction.
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In this case, Zn is placed higher than H in the reactivity series therefore Zn is more reactive than H, therefore takes the place of hydrogen ion.
5 0
4 years ago
In many halocarbons, among them chloroethane (CH3CH2Cl), a halogen is attached to an aliphatic carbon chain. These halocarbons a
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The answer is 1. Carboxylic acids
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3 years ago
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