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3 years ago

The moon is not visible during which phase

Chemistry

2 answers:

vaieri [72.5K]3 years ago

5 0

I believe the answer is B. new moon

Tanzania [10]3 years ago

4 0

The answer would be B. New Moon.

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11. In TLC analysis of ferrocene and acetylferrocene (on silica TLC plate) which prediction is correct: A) ferrocene is more pol

yaroslaw [1]

Answer:

Alternative C would be the correct choice.

Explanation:

The dual compounds were evaluated on something like a TLC plate through three separate additives in conducting a TLC study of ferrocene versus acetylferrocene.
The polar as well as nonpolar ferrocene where nonpolar is about 0.63 with the maximum $R_f$ value, and indeed the polar is somewhere around 0.19 with $R_f$ .
TLC plate (30:1 toluene/ethanol) established with.

The other three choices are not related to the given circumstances. So that option C would be the appropriate choice.

8 0

3 years ago

Liquid A is known to have a lower surface tension and lower viscosity than Liquid B. Use these facts to predict the result of be

Korvikt [17]

Answer: Option (B) is the correct answer.

Explanation:

Surface tension is defined as the attractive forces experienced by the surface molecules of a liquid by the molecules present beneath the surface layer of the liquid.

And, viscosity is defined as the ability of a liquid to resist its flow. When a substance has high viscosity then it is known as a viscous substance.

Since, it is given that viscosity of liquid B is more than liquid A. Therefore, liquid B has more resistive force on its surface as compared to liquid A. As a result, time taken by liquid B is more than time taken by liquid A.

Also, Surface tension = $\frac{Force}{Length}$

Surface tension of liquid B is more than liquid A. Therefore, $F_{B} > F_{A}$ .

Thus, we can conclude that tA will be less than tB.

8 0

3 years ago

Which of the following is an example of erosion under the force of gravity?

taurus [48]

the answer i believe is b:saltation, which is a form of wind erosion

4 0

3 years ago

In the reaction of 675.9 grams of barium chloride and excess silver(I) nitrate, how many grams of silver(I) chloride should get

zvonat [6]

Taking into account the reaction stoichiometry, the mass of silver(I) chloride formed is 930.37 grams.

<h3>Reaction stoichiometry</h3>

In first place, the balanced reaction is:

2 AgNO₃ + BaCl₂ → 2 AgCl + Ba(NO₃)₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

AgNO₃: 2 moles
BaCl₂: 1 mole
AgCl: 2 moles
Ba(NO₃)₂: 1 mole

The molar mass of the compounds is:

AgNO₃: 169.87 g/mole
BaCl₂: 208.24 g/mole
AgCl: 143.32 g/mole
Ba(NO₃)₂: 261.34 g/mole

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

AgNO₃: 2 moles ×169.87 g/mole= 339.74 grams

BaCl₂: 1 mole ×208.24 g/mole= 208.24 grams

AgCl: 2 moles ×143.32 g/mole= 286.64 grams

Ba(NO₃)₂: 1 mole×261.34 g/mole= 261.34 grams

<h3>Mass of silver(I) chloride formed</h3>

The following rule of three can be applied: if by reaction stoichiometry 208.24 grams of barium chloride form 286.64 grams of silver(I) chloride, 675.9 grams of barium chloride form how much mass of silver(I) chloride?

$mass of silver(I) chloride=\frac{675.9 grams of barium chloride x286.64 grams of silver(I) chloride }{208.24 grams of barium chloride}$

mass of silver(I) chloride= 930.37 grams

Finally, the mass of silver(I) chloride formed is 930.37 grams.

Learn more about the reaction stoichiometry:

brainly.com/question/24741074

brainly.com/question/24653699

#SPJ1

8 0

2 years ago

Which statements are examples of how the use of resources has changed?

Oksanka [162]

Answer:

B, A, C

Explanation:

the awnsers that are displayed are the only options that are new, and clean resorsces, we have always used oil in cars but hybrids are a new consept, same as wind power

Good LUCK!!

3 0

2 years ago