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olga2289 [7]
3 years ago
6

Pertain to the following class, Point:

Chemistry
1 answer:
Anton [14]3 years ago
5 0

Answer:

Explanation:

b = 0;

this (x, y);

this(0, 0);

x = a;

y = b;

a =

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How many moles of Lithium Fluoride will you need to add to 250.0 mL of water to make a 5.00 M solution?
Alex17521 [72]

Answer:

1.25 mol LiF

Explanation:

5.00 M solution means

5.00 mol LiF in 1 L solution=1000mL

x mol LiF        in                        250 mL

x = 5.00*250/1000 = 1.25 mol LiF

8 0
4 years ago
Determine % yield if a student obtains 45 g of product in an experiment and the theoretical amount is determined to be 50 g
Katen [24]
Percentage yield=(actual yield/theoretical yield) x 100%
= (45/50) x 100%
= 90%
8 0
4 years ago
150 words describing Bohr’s model, and the fundamental principles behind it. Also, explain how Bohr’s model is different from Ru
luda_lava [24]
Bohr's model is different from Rutherford's model by Bohr's model has 150 words , fundamental principles. also Rutherford's model does not have 150 words and fundamental principles. <span />
8 0
3 years ago
If a 7% saline solution and a 4% saline solution are mixed to make 500 milliliters of a 5% saline solution, how much of each sol
GenaCL600 [577]
The correct answer is A. <span>167 milliliters of 7% solution and 333 milliliters of 4% solution and here is how: 
</span><span>If x is the number of milliliters of the 7% saline solution and y is the number of milliliters of the 4% saline solution then add up to 500 milliliters total, so x + y = 500. 
</span>and if we do
x + y = 500 
<span>x = 500 - y </span>
<span>0.07x + 0.04y = 25 (substitute 500 - y for x) </span>
<span>0.07(500 - y) + 0.04y = 25 </span>
<span>35 - 0.07y + 0.04y = 25 </span>
<span>-0.03y + 35 = 25 </span>
<span>-0.03y = -10 </span>
<span>y = 333.333... </span>
<span>y = about 333 </span>
<span>x = 500 - y = 500 - 333 = 167 
</span>Then you know why the answer is A. 
4 0
3 years ago
Suppose you had 2.0158 grams of hydrogen (H2).
katrin [286]

Answer:

2 moles for the first 2 questions and 100g of water

Explanation:

4 0
3 years ago
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