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3 years ago

Please answer 13-16 ASAP FOR BRAINLIEST

Chemistry

1 answer:

borishaifa [10]3 years ago

6 0

13. A
14. B
15. C
16. 1st one (btw not sure)

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This beaker contains an aqueous solution of copper II nitrate.

alexgriva [62]

Answer:

See the answer below

Explanation:

Aqueous solution of copper II nitrate contains solute of copper II nitrate dissolved in water. The equation for the reaction is as below:

$Cu(NO_3)_2 (s)$ + $H_2O (l)$ --> $Cu(NO_3)_2 (aq)$

Hence, the solute chemical is copper II nitrate while the solvent is water.

Chemical formula of copper II nitrate - $Cu(NO_3)_2$

Chemical formula of water - $H_2O$

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3 years ago

What is best way to get salt out of salt water solution

Vlad1618 [11]

Answer:

The "simple" hurdle that must be overcome to turn seawater into freshwater is to remove the dissolved salt in seawater. That may seem as easy as just boiling some seawater in a pan, capturing the steam and condensing it back into water (distillation).

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4 years ago

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Compound a reacts with one equivalent of h2 in the presence of a catalyst to give methylcyclohexane. Compound a can be formed up

V125BC [204]

Answer:

The compound a is 1-methyl cyclohexene (see attachment for structure).

Explanation:

The reaction of 1-Bromo-1-methylcyclohexane with sodium methoxide is a second-order reaction since the methoxide ion is a strong base and also a strong nucleophile. This ion attacks the alkyl halide faster than the alkyl halide can ionize to produce a first-order reaction. However, we can not see the product of nucleophilic substitution. The SN₂ mechanism is blocked due to the impediment of the 1-Bromo-1-methylcyclohexane. The main product, according to the Zaitsev rule, is the 1-methyl cyclohexene, thus forming a double bond.

Then, this cyclohexene is hydrogenated to form the cyclohexane.

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3 years ago

(there are 2 quetions) how is heat being transfered in:

alekssr [168]

Answer:

Heat energy is transferred from homes by conduction through the walls, floor, roof and windows. It is also transferred from homes by convection. For example, cold air can enter the house through gaps in doors and windows, and convection currents can transfer heat energy in the loft to the roof tiles.
Convection is the heat transfer due to the movement of a fluid, such as a gas or liquid, and carries heat energy away from the source of heat. When a substance is heated, it causes its particles to vibrate more. The more vibration, the more space they will take up and the less dense they will become.

I really hope it helps! ❤

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3 years ago

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The atomic symbol represents the _____ of the element.

Anarel [89]

Protons

Explanation: the atomic number is the same as the number of protons

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3 years ago