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Vadim26 [7]
3 years ago
14

Please help me I really don’t understand

Chemistry
1 answer:
Leokris [45]3 years ago
4 0
I dont understand life, for example, look at my username.

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Calculate the answer. Express it in scientific notation and include the correct number of significant figures. (12 x 104 ) x (5
ipn [44]

Answer:

Explanation:

(12 x 104 ) x (5 x 10-²) = 6 x 10 ³ 6 x 105 6.0x10²

1.  (12 x 104 ) = 1248 or 1.248 x 10^3

2.  (1.248 x 10^3)(5 x 10^-2) = 6.240 x 10^1 or 60 rounded to 1 sig fig

I don't understand "= 6 x 10 ³ 6 x 105 6.0x10² "

6 0
2 years ago
27.2g CuCl2 was dissolved in 2.50 L of the water. What is the molality of the solution?
stealth61 [152]

5.167g of calcium chloride is dissolved in 101.0mL of water in a calorimeter whose calorimeter constant is 15.3J/°C. The temperature rises from 18.4°C to 27.2 ...

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2 years ago
Consider this row in the periodic table of elements. As we move from left to right, across the row, the elements
djverab [1.8K]

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uhhh i do not know this but we are learning at my school i could give you the answer soon i you want

Explanation:

6 0
3 years ago
50.0 g of Potassium chloride reacts with 50.0 g of oxygen to produce KCIO3. After writing
IgorLugansk [536]

Explanation:

If 50.0 grams of Zinc are reacted with 50.0 grams of Hydrogen Chloride ... 50.09 Zn x 1 mol Zn , Imol ZnCl2 , 136.4g. ... If a decomposition reaction produces a 75.0% yield for the oxygen by mass (128.0 grams were.

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I need help with homework
stellarik [79]

The equation that conforms with the particle model is 4C + 6O2 ----> 4CO2 + 2O2.

<h3>What is a chemical reaction?</h3>

The term chemical reaction has to do with the combination of substances to give products. We know that reactants and products must follow the law of conservation of mass.

Hence, the equation that conforms with the particle model is 4C + 6O2 ----> 4CO2 + 2O2.

Learn more about chemical reaction:brainly.com/question/22817140

#SPJ1

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2 years ago
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