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Lady bird [3.3K]
3 years ago
10

Does anyone have the 2020 paper for chemistry

Chemistry
1 answer:
timama [110]3 years ago
6 0

Answer:

Erm.......... can you clarify what "paper", you just said "paper" there's a lot.

Explanation:

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trial 2, 2.68 g/cm/3 trial 3, 2.84g/cm/3. aluminum has a density of 2.70g/cm/3 calcute the percent error for each trial.
serg [7]

Answer:

trial 2: 0.74

trial 3: 5.19

I think but the equation for sloving percent error is:

(true value - determined value)/true value * 100

Explanation:

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4 years ago
How do scientists use radioactive decay to date fossils
grin007 [14]
The clearer answer is they measure the remaining carbon, and the less that there is the older the fossil is.
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3 years ago
When explaining chemical reactions to a friend, Brianna models a reaction by taking several colors of modeling clay and making a
pickupchik [31]

Explanation: Here are the different coloured that are used to join and make one piece this method that Brianna is following is called synthesis.

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3 years ago
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How many significant figure does 60600 have?
irga5000 [103]
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3 years ago
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match the number of negative charges to the number of positive charges to make each combination balanced (see image for answer)
BartSMP [9]

Answer : The correct match is:

1 positive charge = 1 negative charge

2 positive charges = 2 negative charges

3 positive charges = 3 negative charges

Explanation :

As we now that there are three subatomic particles which are protons, electrons and neutrons.

The protons and neutrons are located inside the nucleus and electrons are located around the nucleus.

The protons are positively charged, the electrons are negatively charged and neutrons are neutral.

As we know that all the things are made up of charges and opposite charges attract to each other.

In a neutral atom, the positive charges and negative charges are balanced in an object. That means, in neutral atom the number of positive charges are equal to the negative charges.

So we can say that:

1 positive charge = 1 negative charge

2 positive charges = 2 negative charges

3 positive charges = 3 negative charges

5 0
4 years ago
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