1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
makkiz [27]
3 years ago
11

Plzz help me with these questions....!!!

Chemistry
1 answer:
exis [7]3 years ago
7 0

Answer:-

1) The pH of sodium bicarbonate will be around 8 as it is slightly basic. So the color will be blue.

2) The correct method for finding the pH of a solution is to use a dropper and drop wise add the solution to the pH paper lying on a glass tile. Hence the answer is 3.

3) HCl is an acid. The pH of HCl should be 1-2. NaOH is a base. It’s pH should be around 13-14.

KCl is a salt of a strong acid and strong base. It should have pH near 7. Distilled water has pH of 7. So the solutions with equal pH are KCl and distilled water. So the answer is number 4 (B and D).

You might be interested in
A solution contains 2 moles of hydrochloric acid.the volume of the solution is 250 cm3
Crazy boy [7]

Answer:

1dm = 10cm

1dm3 = 10cm x 10cm x 10cm = 1000cm3

1L = 1000cm3

so 1litre = 1dm3

4 moles in 2 dm3

= 2 moles in 1dm3 = 2moles in 1L = 2M

1L = 1000cm

0.3 moles in 200cm3 =

200cm3 = 0.2L

so 0.3 moles in 0.2 L = 1.5 moles in 1 L = 1.5M

(I have tried to simplify and show why 1dm3 = 1L)

I hope this helps you understand!

8 0
2 years ago
Explains how commercial land use negatively impacts watersheds?
Juli2301 [7.4K]
Polluted water. The growing crops and climate variability change. Basically the farming
3 0
3 years ago
Saturated hydrocarbon molecules may be bonded in which type of structure?
poizon [28]
<span>all of the above can be saturated molecules </span>
3 0
3 years ago
Read 2 more answers
What happens to the density of a substance when it is heated? Explain your answer.
hoa [83]

Heating a substance causes molecules to speed up and spread slightly further apart, occupying a larger volume that results in a decrease in density. Cooling a substance causes molecules to slow down and get slightly closer together, occupying a smaller volume that results in an increase in density.

From: www.middleschoolchemistry.com

7 0
3 years ago
A scuba diver goes deeper underwater the diver must be aware that the increased pressure affects the human body be increasing th
slega [8]

Answer:

The amount of dissolved gases in the body. Have a good day! =)

Explanation:

3 0
3 years ago
Other questions:
  • Why does a water molecule have a bent shape?
    5·1 answer
  • A botanist is measuring plants to determine amount of growth after fertilizer was used. A ruler was used for the measurements. W
    14·1 answer
  • Throughput is a term that refers to the amount of ?
    8·1 answer
  • Suggest two reasons why copper should not be disposed of in landfill sites
    7·1 answer
  • A pump contains 1.5 L of air at 175 kPa. You draw back on the piston of the pump, expanding the volume until the pressure reads
    12·1 answer
  • Hello please help me on this problem thanks.sc​
    5·1 answer
  • As the first five elements in Group 14 are considered in order from top to bottom, there are changes in both the
    7·1 answer
  • At the atomic level, are synthetic medicines different from natural medicines? Explain your answer.
    6·2 answers
  • Calcular la masa de Mg que se necesita hacer reaccionar con CuSO4 para formar 1.89 g de Cu2O según la siguiente ecuación: Mg + C
    5·1 answer
  • This group can reproduce both asexually and sexually.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!