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KonstantinChe [14]
3 years ago
11

Hello! Can you please help me do this question? I have to pick two but I’m not really sure what to pick..

Chemistry
2 answers:
In-s [12.5K]3 years ago
7 0

Answer:

B and D

Explanation:

it is B and D because in no gravity  if you change the size of the ball it does not change anything. and if you swing fast it does not change anything but the speed. if you change the angle it is just the same modle but different angle

andrew-mc [135]3 years ago
3 0

Answer:

D, and E

Explanation:

they may not be correct but the answers seem correct. please tell me If I'm wrong.

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How many atoms are in 25.0 moles of calcium (Ca)?
arsen [322]

Answer:

1.8066e+24 is the answer

3 0
3 years ago
Hello! Does anyone know how the structural formula of 2, 2 dimethyl butane is? Please help!<br><br>​
Alja [10]

Answer:

I have it.

Explanation:

3 0
3 years ago
Please Helpp
jasenka [17]

Answer:

Mitochondria - energy production in plant and animal tissue

Explanation:

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5 0
3 years ago
Use the equation: 2 kclo3 2 kcl + 3 o2 to write the mole ratio needed to calculate: (a) moles of kcl produced from 3.5 moles of
poizon [28]

Answer:-

(a) 3.5

(b) 3

Explanation:-

2KClO3 --> 2KCl + 3 O2

From the equation we see that 2 moles of KClO3 gives 2 moles of KCl.

So 3.5 moles of KClO3 will give 3 moles of KCl.

Again

3 moles of O2 are produced with 2 moles of KCl.

If 4.5 moles of O2 produced then

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=3

3 0
3 years ago
If you have 0.50 mol of ca, how many atoms are present?
Evgen [1.6K]
Answer is: there are 3.011·10²³ atoms of calcium.

n(Ca) = 0.50 mol; amount of substance(calcium).
Na = 6.022·10²³ 1/mol;  Avogadro's constant or number.
N(Ca) = n(Ca) · Na.
N(Ca) = 0.50 mol · 6.022·10²³ 1/mol.
N(Ca) = 3.011·10²³; number of calcium atoms.
The mole is an SI unit which measures the number of particles in substance. One mole is equal to <span><span>6.022</span></span>·<span><span><span>10</span></span></span>²³<span> atoms.</span>
6 0
4 years ago
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