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fomenos
2 years ago
13

Glenn has been diagnosed as HIV-positive. What disease is he at risk for?

Chemistry
1 answer:
Brums [2.3K]2 years ago
8 0
Your answer is AIDS good luck
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a concentration solution of H2so4 is 59.4% by mass (m/m) and has a density of 1.83 g/mL. How many mL of the solution would be re
Blababa [14]

Answer: 41.5 mL

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

Molarity=\frac{n}{V_s}

where,

n = moles of solute

V_s = volume of solution in L

Given : 59.4 g of H_2SO_4 in 100 g of solution  

moles of H_2SO_4=\frac{\text {given mass}}{\text {molar mass}}=\frac{59.4g}{98g/mol}=0.61

Volume of solution =\frac{\text {mass of solution}}{\text {density of solution}}=\frac{100g}{1.83g/ml}=54.6ml

Now put all the given values in the formula of molality, we get

Molality=\frac{0.61\times 1000}{54.6ml}=11.2M

To calculate the volume of acid, we use the equation given by neutralisation reaction:

M_1V_1=M_2V_2

where,

M_1\text{ and }V_1 are the molarity and volume of stock acid which is H_2SO_4

M_2\text{ and }V_2 are the molarity and volume of dilute acid which is H_2SO_4

We are given:

M_1=11.2M\\V_1=mL\\M_2=0.30M\\V_2=1550mL

Putting values in above equation, we get:

11.2\times V_1=0.30\times 1550\\\\V_1=41.5mL

Thus 41.5 mL of the solution would be required to prepare 1550 mL of a .30M solution of the acid

4 0
3 years ago
If you dissolve 50.0 grams of potassium bromide in 100.0g of water what is the mass percent of the resultant solution?
tatiyna
Mass percent= grams solute/ grams of solution x 100

Mass Percent= (50/ 150)x100= 33.3%
7 0
2 years ago
Help quickkkk plssssssss
earnstyle [38]

Answer:

I think B or D

Explanation:

yejsndvewjnsvdcehejd

4 0
3 years ago
Read 2 more answers
What unknown quantity can be calculated after performing a titration? a. volume c. mass b. concentration d. density
sertanlavr [38]
C & B are switched so I'm not sure if that was a typo or not, but the answer is concentration!
3 0
3 years ago
9.8 x 10​^-6 regular notation
topjm [15]

Answer:

0.0000098 should be the answer

Explanation:

3 0
3 years ago
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