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arsen [322]
4 years ago
6

For a particular lab experiment, you need 150 mL of a 2.50 M solution of ammonium nitrate. How many grams of NH4NO3 will you nee

d for the solution?
8.0 g

10.02 g

25.0 g

875.0 g

30.0 g
Chemistry
1 answer:
Anna35 [415]4 years ago
4 0

Answer:

mass NH4NO3 = 30.0 g

Explanation:

∴ V = 150 mL

∴<em> C</em> NH4NO3 = 2.50 M

⇒ mass NH4NO3 = ?

∴ mol NH4NO3 = (0.150 L)×(2.50 mol/L) = 0.375 mol NH4NO3

∴ Mw NH4NO3 = 80.043 g/mol

⇒ mass NH4NO3 = (0.375 mol)×(80.043 g/mol) = 30.016 g

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Anhydrous Copper sulfate is 39.81 percent copper and 60.19 percent sulfate by mass, and in its blue, hydrous form, it is 25.47% copper, 38.47% sulfate (12.82% sulfur) and 36.06% water by mass.
7 0
3 years ago
Which of the following threats to biodiversity is a result of cutting down forests? (4 points)
Maslowich

Answer:

Explanation:

When I was growing up, one of the most popular cartoons was a little possum whose name was Pogo. He often said

“We have met the enemy and he is us.”

It is something Pogo said more than once. We are the problem with biodiversity being threatened.

We clear land for agriculture, not only in Canada and the United States, but in places like Brazil where it matters what is done to the environment. Those trees are the planet's lungs. Whole environmental groups are devoted to stopping the harvesting of trees that are hundreds of years old.

Our oceans have become cesspools of plastic.

Our rivers have become dumping grounds for all kinds of pollutants like paint and car tires to name just a couple.

Our landscape has been cluttered by billboards advertising things that are hundreds of miles away.

There's mining, oil, and other industries that make Mother Nature shudder every time they come near her.

7 0
3 years ago
Read 2 more answers
In the above picture a solid aluminium rod is being heated by a flame. Explain the main reason why Glob
Illusion [34]

Answer:

TE from the candle is carried by particles as they flow though the rod to the wax.

Explanation:

3 0
2 years ago
Match these items.
mr Goodwill [35]

Answer:

Here's what I get  

Explanation:

There are two methods of naming esters.

(a) Common names

alkyl alcohol + carboxylic acid ⟶ alkyl carboxylate

To form the name of an ester, you drop the alcohol and -ic acid ending from the names of the reactants.

The name of the ester consists of two words: the name of the alcohol followed by the acid name with the ending -ate.

(b) IUPAC (systematic) names

alkanol + alkanoic acid ⟶ alkyl alkanoate

To form the name of an ester, you drop the -anol and -ic acid endings from the names of the reactants.

The name of the ester consists of two words with the corresponding endings -yl and -ate.

You don't mix the common and IUPAC systems in the same name.

1. ethanol + benzoic acid ⟶ ethyl benzoate

2. benzyl alcohol + acetic acid ⟶ benzyl acetate

3. butanol + butanoic acid ⟶ butyl butanoate (IUPAC)

   butyl alcohol + butyric acid ⟶ butyl butyrate (common)

4. pentanol + propanoic acid ⟶ pentyl propanoate (IUPAC)

    n-pentyl alcohol + propionic acid ⟶ n-pentyl propionate (common)

5. isopropyl alcohol + formic acid ⟶ isopropyl formate

3 0
3 years ago
Molecular complexes in the cristae contain electron transport carriers that move _________ into the intermembrane space. The fir
bulgar [2K]

Answer:

a.) Hydrogen

b.) electron

c.) NADH⁺ + H⁺

d.) electron

e.) FADH₂

f.) electron

g.) hydrogen ions

h.) oxygen

i.) hydrogen ions

j.) ATP

Explanation:

Molecular complexes in the cristae contain electron transport carriers that move Hydrogen into the intermembrane space.

The first electron transport carrier accepts an electron from NADH⁺ + H⁺

A second carrier accepts an electron from FADH₂ .

After the electron have travelled through the chain they are finally accepted by hydrogen ions and oxygen to produce water.

Going from high to low concentration, hydrogen ions flow through ATP synthase like a water wheel to produce ~32 ATP molecules.

6 0
3 years ago
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