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rodikova [14]
3 years ago
15

Is this the correct answer?

Chemistry
1 answer:
Alona [7]3 years ago
8 0
I believe so, looks like it
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In order to make 0.500 L of a 0.475 M solution, you will need to weigh out how many grams of sucrose (MM = 342 g/mol)?
elixir [45]

The first step to solve this problem is to multiply the volume of solution times its concentration to find the number of moles needed, remember that M=mol/L:

0.500L\cdot\frac{0.475mol}{L}=0.2375mol

Now, use the molar mass of sucrose to find the number of grams needed to make the solution. This is, multiply the number of moles needed times the molar mass:

0.2375mol\cdot\frac{342g}{mol}=81.225g

It means that to make 0.500L of a 0.475M you will have to weigh 81.225g of sucrose.

4 0
1 year ago
What is the energy of a photon of violet light with a frequency of 7.57x10^14 s^-1?
Eddi Din [679]

Answer:

ΔE = 5.02 x 10⁻¹⁹ j

Explanation:

ΔE (photon) = h·f = (6.63 x 10⁻³⁴ j·s)(7.57 x 10¹⁴ s⁻¹) = 5.02 x 10⁻¹⁹ j

h = Planck's Constant = 6.63 x 10⁻³⁴ j·s

f = frequency (given) = 7.57 x 10¹⁴ s⁻¹

6 0
3 years ago
2) Which element is used as fuel in nuclear reactors? How many years before we run out of it?
Firlakuza [10]

Answer:Uranium

80 years

To make that nuclear reaction that makes that heat, those uranium pellets are the fuel. And just like any fuel, it gets used up eventually. Your 12-foot-long fuel rod full of those uranium pellet, lasts about six years in a reactor, until the fission process uses that uranium fuel up.

Transuranic wastes, sometimes called TRU, account for most of the radioactive hazard remaining in high-level waste after 1,000 years. Radioactive isotopes eventually decay, or disintegrate, to harmless materials. Some isotopes decay in hours or even minutes, but others decay very slowly.

Explanation:

Hope this helps

5 0
3 years ago
Compare the amount of copper predicted in part A with the amount measured in part B. What percentage of the predicted amount was
timofeeve [1]

Answer:

Explanation:

Because the experiment has an different independent and dependent variable and each part has  a different result of what type of copper or what  type of control you are using for you experiment.

PLS MARK BRAINLIEST IF CORRECT I WORKED HARD ON THIS ANSWER,HAVE A NICE DAY/NIGHT <3

4 0
3 years ago
Read 2 more answers
What is the particle theory
kolezko [41]

Answer:

The kinetic theory of matter (particle theory) says that all matter consists of many, very small particles which are constantly moving or in a continual state of motion. The degree to which the particles move is determined by the amount of energy they have and their relationship to other particles.

Six main points of the particle theory:

• All matter is made of particles.

• Particles have space between them.

• Particles are always moving.

• Particles move faster and get farther apart when heated.

• Particles are attracted to each other.

• All Particles of the same substance are identical

7 0
3 years ago
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