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Mademuasel [1]
3 years ago
15

Which is a physical change?

Chemistry
2 answers:
Lady bird [3.3K]3 years ago
6 0

B- strawberries liquified in a blender

nlexa [21]3 years ago
5 0
B would be the correct answer
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What is the % of each element in Al2(CrO4)3
ankoles [38]

Answer:

Al = 13.4%  Cr = 38.8%  O = 47.7

Aluminium Chromium Oxygen

Please give brainliest.

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2 years ago
How are carrot, an amoeba, and a bacterium alike
sineoko [7]
<span>They should all be eukaryotic.</span>
4 0
3 years ago
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Fe2O3 + CO → Fe + CO2 If 2 moles of Fe2O3 react with 9 moles of CO, how many moles of each product are formed?
Y_Kistochka [10]

Answer: B. 4 moles Fe and 3 moles CO2

Explanation:

write a balanced chemical reaction

that is FeO3 + 3 CO → 2 Fe + 3CO2

2 moles of Fe2O3 reacted with 3 x2=6 moles of Co to form Fe and CO2 therefore CO was in excess and Fe2O3 was limiting reagent.

use the mole ratio to determine the moles of each product.

that is the mole ratio 0f Fe2O3 : Fe is 1:2 therefore the moles of Fe = 2x2=4 moles

the mole ratio of Fe2CO3 : CO2 is 1: 3 therefore the moles of Co2 = 2 x3 = 6 moles

8 0
2 years ago
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The mass of an erlenmeyer flask is 85.135 g. after 10.00 ml of water is added to the flask, the mass of the flask and the water
BARSIC [14]
Subtracting the mass of (flask+water) from the empty flask gives:
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Dividing this by the given volume of 10.00 mL water gives:
9.888 grams of water / 10.00 mL of water = 0.9888 g/mL of water
Therefore, based on this sample, the density of water is 0.9888 g/mL, which is close to the usually accepted approximation of 1 g/mL.
4 0
3 years ago
Will the volume of a gas increase, decrease, or remain unchanged for each of the following sets of changes?
Katena32 [7]
The answer would be 150 half of 200 and 100 is 150
7 0
1 year ago
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