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lina2011 [118]
2 years ago
10

Help me out guys :)

Chemistry
1 answer:
devlian [24]2 years ago
5 0

Answer:

2 chloride ion, Cl¯

Explanation:

The formula for calcium chloride is CaCl₂.

Next, we shall write the balanced dissociation equation for calcium chloride, CaCl₂. This is illustrated below:

CaCl₂ (aq) —> Ca²⁺ + 2Cl¯

From the balanced equation above,

We can see that calcium chloride, CaCl₂ contains 1 calcium ion, Ca²⁺ and 2 chloride ion, Cl¯.

Therefore, we can conclude that for every 1 calcium ion, Ca²⁺, there are 2 chloride ion, Cl¯.

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Step 1- Question.

Step 2-Research.

Step 3-Hypothesis.

Step 4-Experiment.

Step 5-Observations.

Step 6-Results/Conclusion.

3 0
3 years ago
Keiko needs 100mL of a 5% acid solution for a science experiment. She has available a 1% solution and a 6% solution. How many mi
4vir4ik [10]

Answer:

Keiko should mix 20 mL 1% solution and 80 mL 6% solution for to make 100 mL 5% solution

Explanation:

There are 2 unknown values X= mL 6% solution and Y=1% solution. So, we need 2 equations:

1. Equation acid concentration. X mL 6% + Y mL 1% = 100 mL 5%

2. Equation solvent concentration X mL 94% + Y mL 99% = 100 mL 95%

When clearing X and Y :

(X mL 6%    +   Y mL 1%      =    100 mL 5%) (-15,7)

X mL 94%  +   Y mL 99%   =   100 mL 95%

_______________________________

 -                      Y  0.83       =   16.5

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Replace Y in anyone equation and X = 80 mL 6% solution

I hope to see been helpful

7 0
3 years ago
Read 2 more answers
In one sentence, describe the general chemical structure of carbohydrates. In a second sentence, list the major biochemical func
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Answer:

A carbohydrate is a compound composed of molecules of carbon (C), hydrogen (H), and oxygen (O) such that its general chemical formula is CH_2OH.

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Explanation:

A carbohydrate is a compound composed of molecules of carbon (C), hydrogen (H), and oxygen (O) such that its general chemical formula is CH_2OH.

Biochemical functions of carbohydrates:

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6 0
3 years ago
Question.2
fiasKO [112]

Answer:i dont know the answer

3 0
3 years ago
Need help please please
MatroZZZ [7]

Answer:

1) 4

2) 1/9

3) 46.5

4) 5.8

Explanation:

Density= Mass/Volume

1) D=24/6=4

2) D=1/9=0.11

3) D=2000/43=46.5

4) D=75/13=5.8

7 0
3 years ago
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