Molarity Of Sodium Chloride Solution
Chemically speaking, molarity is the concentration of a solution expressed as the number of moles of solute per liter solution. Do you know how to calculate this chemical measure? Below we look at the molarity of Sodium Chloride solution.
- 1.HOW much Sodium Chloride is needed to make 100ml, 15% w/v sodium chloride solution?
- A.
15g
- B.
150g
- C.
1500g
- D.
0.15g
- 2.HOW much Sodium Chloride is needed to make 200ml, 15% w/v sodium chloride solution?
- A.
30g
- B.
300g
- C.
3000g
- D.
0.30g
- 3.HOW much Sodium Chloride is needed to make 1000ml, 15% w/v sodium chloride solution?
- A.
15g
- B.
150g
- C.
1500g
- D.
0.15g
- 4.HOW much Sodium Chloride is needed to make 1L, 15% w/v sodium chloride solution?
- A.
15g
- B.
150g
- C.
1500g
- D.
0.15g
- 5.How much sodium chloride (NaCl) is needed to make a 3M, 10L sodium chloride solution
- A.
17.4g
- B.
174g
- C.
1740g
- D.
5.9g
- 6.How much sodium chloride (NaCl) is needed to make a 3M, 10mL sodium chloride solution
- A.
17.4g
- B.
1.74g
- C.
1740g
- D.
5.9g
- 7.How much sodium hydroxide (NaOH) is needed to make a 5M, 5L sodium hydroxide solution
- A.
1g
- B.
10g
- C.
1000g
- D.
0.1g
- 8.How much sodium hydroxide (NaOH) is needed to make a 5M, 5mL sodium hydroxide solution
- A.
0.01g
- B.
1g
- C.
100g
- D.
0.1g
- 9.A serial dilution of serum is made for 10 tubes. 1ml of serum from the serum tube was placed in tube #1. 1mL of saline was added to this tube and mixed. 1ml of the tube #1 dilution was then removed and placed into tube #2. 1ml of saline was then added into tube #2 and mixed. ImL of tube #2 dilution was placed in tube number 3 and so on until tube #10. each tube was then tested for the presence of anti-HIV antibodies. The first 5 tubes tested positive and the rest tested negative. Tube #5 was the tube with the highest dilution that showed a positive reaction. what was the dilution on tube #5
- A.
1/2
- B.
1/8
- C.
1/5
- D.
1/32
- 10.A serial dilution of serum is made for 10 tubes. 1ml of serum from the serum tube was placed in tube #1. 1mL of saline was added to this tube and mixed. 1ml of the tube #1 dilution was then removed and placed into tube #2. 1ml of saline was then added into tube #2 and mixed. ImL of tube #2 dilution was placed in tube number 3 and so on until tube #10. each tube was then tested for the presence of anti-HIV antibodies. The first 5 tubes tested positive and the rest tested negative. Tube #5 was the tube with the highest dilution that showed a positive reaction. what was the titer
- A.
2
- B.
8
- C.
5
- D.
32
- 11.A serial dilution of serum is made for 10 tubes. 1ml of serum from the serum tube was placed in tube #1. 1mL of saline was added to this tube and mixed. 1ml of the tube #1 dilution was then removed and placed into tube #2. 1ml of saline was then added into tube #2 and mixed. ImL of tube #2 dilution was placed in tube number 3 and so on until tube #10. each tube was then tested for the presence of anti-HIV antibodies. The first 7 tubes tested positive and the rest tested negative. Tube #7 was the tube with the highest dilution that showed a positive reaction. what was the dilution on tube #7
- A.
1/2
- B.
1/128
- C.
1/7
- D.
1/32
- 12.A serial dilution of serum is made for 10 tubes. 1ml of serum from the serum tube was placed in tube #1. 1mL of saline was added to this tube and mixed. 1ml of the tube #1 dilution was then removed and placed into tube #2. 1ml of saline was then added into tube #2 and mixed. ImL of tube #2 dilution was placed in tube number 3 and so on until tube #10. each tube was then tested for the presence of anti-HIV antibodies. The first 7 tubes tested positive and the rest tested negative. Tube #7was the tube with the highest dilution that showed a positive reaction. what was the titer
- A.
2
- B.
128
- C.
7
- D.
32
- 13.It is more accurate to make a really big dilution is as smaller 10 fold compound dilution than in one step
- A.
True
- B.
False
- 14.Which is the best way of making a 10mL, 1/1000 reagent dilution
- A.
0.001mL reagent and 0.999mL diluent
- B.
Make a 10 fold compound dilution with each tube 1/10 as concentrated as the last tube. Two tubes are needed - #1 and #2 . Tube #1 contains 1ml reagent and 9ml diluent. tube two contains 1ml of dilution from tube #1 and 9ml diluent. tube #2 now contains 10mL of 1/1000 dilution of reagent
- C.
Make a 10 fold compound diution with each tube 1/10 as concentrated as the last tube. Three tubes are needed.tube #1 ,#2 and #3 . tube #1 contains 1ml reagent and 9ml diluent. Tube two contains 1ml of dilution from tube #1 and 9ml diluent. tube #3 contains 1ml of dilution from tube #2 and 9ml diluent. tube #3 now contains 10mL of 1/1000 dilution of reagent
- 15.Which is the best way of making a 10mL, 1/100 reagent dilution
- A.
0.001mL reagent and 0.999mL diluent
- B.
Make a 10 fold compound dilution with each tube 1/10 as concentrated as the last tube. Two tubes are needed - #1 and #2 . Tube #1 contains 1ml reagent and 9ml diluent. tube two contains 1ml of dilution from tube #1 and 9ml diluent. tube #2 now contains 10mL of 1/100 dilution of reagent
- C.
Make a 10 fold compound diution with each tube 1/10 as concentrated as the last tube. Three tubes are needed.tube #1 ,#2 and #3 . tube #1 contains 1ml reagent and 9ml diluent. Tube two contains 1ml of dilution from tube #1 and 9ml diluent. tube #3 contains 1ml of dilution from tube #2 and 9ml diluent. tube #3 now contains 10mL of 1/100 dilution of reagent
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