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ddd [48]
3 years ago
9

Which of the following substances are not homogeneous mixtures?

Chemistry
1 answer:
Tanya [424]3 years ago
7 0

Answer: it’s B

Explanation:

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using the chemical stoichiometry, determine the number of moles of carbonic acid that can be produced from 4 mol of NaHCO3 and 8
Pavlova-9 [17]
Reaction is NaHCO3 + HCL = H2CO3 + NaCl
the ratios are 1:1 

the 8 moles of HCl are in excess

so if you use 4 moles of NaHCO3 then you will obtain 4 moles of carbonic acid

hope that helps
6 0
3 years ago
Read 2 more answers
Lionel places red blood cells in a beaker of pure water, and then he observes their
scZoUnD [109]

Answer:

The red blood cells will burst

Explanation:

When the red blood cells are placed in pure water, they will gain water by osmosis, swell and finally burst due to their weak cell membranes. This process is referred to as hemolysis.

7 0
2 years ago
The freezing point of diet soda is higher than the freezing point of regular soda, but lower than 0 degrees celcius, the freezin
Zepler [3.9K]

Answer:

Explanation:

Both Diet Soda and regular soda contain sweeteners.

When a solute is dissolved in solution, the solution undergoes *freezing point depression* it freezing point reduces. The magnitude of freezing point depression is directly proportional to the amount of solute in a solution.

Since soda Both regular or diet soda contains more solute than water , their freezing point is will consequently be lower than water

4 0
3 years ago
What resources should the scientist use to research water pollution?
Alla [95]
A scientist needs to check several parameters before coming to a conclusion about the amount of water pollution. The scientists needs to check the amount of dissolved oxygen in the water, temperature of the water, the clarity of the water, the PH level of the water and also the amount of bacteria present in the water. There may be other criteria’s, but the mentioned ones are enough to gauge the amount of pollution in the water. Scientists often takes fish and aquatic plants from the water to be tested to check the amount of pollution indirectly affecting these species.



3 0
3 years ago
What element has 2 electrons in its outermost energy level and is in the 2nd period on periodic table?
Olegator [25]
Be-beryllium have 2 electrons and it is in the 2 nd period
4 0
3 years ago
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