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ratelena [41]
4 years ago
11

The answer to this and why

Chemistry
1 answer:
adoni [48]4 years ago
7 0
Answer : D
Why ? : Because dissolved minerals would be a liquid and later solidifies into a crystal which would be in phase of being a solid
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How many grams of water are contained in a 0.127 l sample at 20°c?
kvasek [131]

The density of water at 20 °C is 0.9982 g/cm^{3} or 998.2 g/L. The volume of water is 0.127 L thus, its mass can be calculated from the following formula:

d=\frac{m}{V}

Here, d is density, m is mass and V is volume of water.

On rearranging,

m=d×V=(998.2 g/L)(0.127 L)=126.7 g

Thus, mass of water is 126.7 g.


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3 years ago
A chemist weighed out 19.9 g of aluminum. Calculate the number of moles of aluminum she weighed out.
vodomira [7]
Aluminum is 26.982 grams per mole, so 26.982/19.9 will give you the moles 1.3558794
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4 years ago
please help me understand genetic engineering and if it is good or bad! please make it detailed i need help on my essay
Papessa [141]
Thanks for using Brainly. You’re always welcome to ask questions here.

Genetic engineering would be DNA from another organism and combining it with another DNA. It’s also used by scientists to study these types of things.
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3 years ago
Explain why cis−1−chloro−2−methylcyclohexane undergoes E2 elimination much faster than its trans isomer.
ANEK [815]
Both chloro and methyl groups axial
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4 years ago
4. Synthesis problems. Propose a synthetic route from the starting material to the product. In your answer, show each individual
Troyanec [42]

The reduction of alkyne to an alkene in the first step allows the best reagent to be chosen for each subsequent step.

Describe reagents.

A reagent is merely an essential component of a chemical reaction, it should be mentioned. It is an ingredient that speeds up the reaction.

With H2 and Lindlar's catalyst, an alkyne is reduced to alkene as the initial step in this process. Alkene will then be brominated to produce allyl bromide as the next step.

In this instance, the required allyl alcohol will be produced via the reaction of allyl bromide with NaOH.

Learn more about reagent here brainly.com/question/23342137

#SPJ4.

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2 years ago
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