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3 years ago

Which statement does NOT correctly compare boron with another element?

1 answer:

ozzi3 years ago

7 0

Statement #2 does not correctly compare boron to copper. B Boron is a semi metal so it can conduct electricity however metals (like Cu copper) are much better conductors of electricity.

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How many atoms of hydrogen are in 0.500 mol of ch3oh molecules?

cestrela7 [59]

In 1 mol of CH3OH, you have 4 H-atoms (because 3 H-atoms are attached to the C-atom, and one H-atom in the OH group). That means in 0.500 mol of CH3OH, you have 2 H-atoms since it is halved. And then we have Avogadro's constant: 6.02 * 1023.

The question asks for how many hydrogen atoms there are in 0.500 mol CH3OH. Using the numbers that we have (Avogadro's constant and no. of H-atoms), the answer of the question will be something like:

<span>H-atoms in CH3OH = 2 * 6.02 * </span>1023<span> = ~1.2 * 10</span>24

8 0

3 years ago

For each of the esters provided, identify the alcohol and the carboxylic acid that reacted.

Veronika [31]

Answer:

52. The alcohol USED => methanol, CH3OH

The carboxylic acid USED => propanoic acid, CH3CH2COOH.

53. The alcohol USED => Ethanol, CH2CH3OH

The carboxylic acid USED => Formic acid, HCOOH.

Explanation:

52. To obtain Methyl propanoate, CH3CH2COOCH3, we simply react propanoic, CH3CH2COOH and methanol, CH3OH together as shown below:

CH3CH2COOH + CH3OH —> CH3CH2COOCH3 + H2O

The alcohol used: methanol, CH3OH

The carboxylic acid used: propanoic acid, CH3CH2COOH.

53. To obtain Ethyl methanoate, HCOOCH2CH3, we simply react

Formic acid, HCOOH and ethanol, CH3CH2OH together as show below:

HCOOH + CH3CH2OH —> HCOOCH2CH3 + H2O

The alcohol USED => Ethanol, CH2CH3OH

The carboxylic acid USED => Formic acid, HCOOH.

7 0

3 years ago

, Hydrocarbons are compounds that contain(1) carbon, only(2) carbon and hydrogen, only(3) carbon, hydrogen, and oxygen, only(4)

Firdavs [7]

Hydrocarbons are compounds formed by only hydrogen atoms and carbon.

Answer (2)

hope this helps!

4 0

3 years ago

Help me please and ty

satela [25.4K]

Answer:

it the same side with the other side you fellow the other side

Explanation:

7 0

3 years ago

Read 2 more answers

What is the molarity of a solution that contains 25.3 g of NaCl in 111 mL of solution?

Ahat [919]

Answer:

"3.90M" if approximate

Explanation:

if u didn't understood why i converted volume from millilitres to litre then refer defination of Molarity.

hope it help:)

8 0

3 years ago