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Elanso [62]
3 years ago
10

Which indicator shows whether a solution is acidic or basic, but not how strong it is?

Chemistry
2 answers:
Galina-37 [17]3 years ago
5 0

Answer:

Option C

Explanation:

Litmus paper shows only whether the solution is acidic or basic, but not how strong it is.

=> Base turns the red litmus paper blue

=> Acid turns the blue litmus paper red.

shepuryov [24]3 years ago
4 0
I think the answer is b but I am not for sure
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What is the energy released in the fission reaction 1 0 n + 235 92 U → 131 53 I + 89 39 Y + 16 1 0 n 0 1 n + 92 235 U → 53 131 I
mihalych1998 [28]

<u>Answer:</u> The energy released in the given nuclear reaction is 94.99 MeV.

<u>Explanation:</u>

For the given nuclear reaction:

_{92}^{235}\textrm{U}+_0^1\textrm{n}\rightarrow _{53}^{131}\textrm{I}+_{39}^{89}\textrm{Y}+16_{0}^1\textrm{n}

We are given:

Mass of _{92}^{235}\textrm{U} = 235.043924 u

Mass of _{0}^{1}\textrm{n} = 1.008665 u

Mass of _{53}^{131}\textrm{I} = 130.9061246 u

Mass of _{39}^{89}\textrm{Y} = 88.9058483 u u

To calculate the mass defect, we use the equation:

\Delta m=\text{Mass of reactants}-\text{Mass of products}

Putting values in above equation, we get:

\Delta m=(m_U+m_{n})-(m_{I}+m_{Y}+16m_{n})\\\\\Delta m=(235.043924+1.008665)-(130.9061246+88.9058483+16(1.008665))=0.1019761u

To calculate the energy released, we use the equation:

E=\Delta mc^2\\E=(0.1019761u)\times c^2

E=(0.1019761u)\times (931.5MeV)  (Conversion factor:  1u=931.5MeV/c^2  )

E=94.99MeV

Hence, the energy released in the given nuclear reaction is 94.99 MeV.

3 0
3 years ago
When water vapor is cooled from 250°c to 150°c in a rigid tank the vapor just starts to?
viktelen [127]
The water vapor will begin to contract. The particles will begin to bond with each other to seek heat so they're contracting.
3 0
4 years ago
Help please I really don’t know what i’m doing.
Sindrei [870]

brainly.com/question/24206619

C₁₂H₂₂O₁₁

1 )

Molar mass = 12 x 12 + 22 x 1 + 11 x 16

= 144 + 22 + 176

= 342 g

2 )

100 mL of 1.0 M will contain 1.0 x0.100 = .1 mole of sucrose

0.1 mole of sucrose = 0.1 x 342 g = 34.2 g of sucrose.

So , mass of sucrose required is 34.2 g .

3 )

100 mL of .5 M sucrose = .100 x .5 mole of sucrose

= .05 mole of sucrose

.05 mole of sucrose = .05 x 342 g = 17.1 g of sucrose .

So , mass of sucrose required is 17.1 g .

7 0
2 years ago
Some people have one sickle cell gene and one normal gene. They have few defctive cells and no symptoms because the sickle cell
Drupady [299]

Answer:

The sickle cell gene is recessive to the normal gene

Please find the description below

Explanation:

Sickle cell is a blood disease inherited genetically from one's parents. The sickle cell is associated with the blood genotype of an individual. The allele for sickle cell trait is S, while that of the normal gene is A. In this gene, the allele for normal gene (A) is dominant over the allele for sickle cell (S).

Hence, people that have one sickle cell gene (S) and one normal gene (A) will have an AS genotype. The individual will have few defective cells and no symptoms because the phenotypic expression of the sickle cell allele has been masked by the normal one.

5 0
3 years ago
I need help on deciding which one i should get
alekssr [168]

Answer:

I would say the purple one!

Explanation:

4 0
3 years ago
Read 2 more answers
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