Please help ASAP!!!!!!!

Chemistry

1 answer:

SpyIntel [72]3 years ago

8 0

Answer:

Chemists develop safer and more effective fertilizers and pesticides .
Chemists develop more productive and safer crops .

Explanation:

Agriculture means food producing

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Why do the carbon anodes need to be replaced regularly in the electrolysis of Al2O3 into aluminum metal?

Nuetrik [128]

Answer:

A) They get oxidized into carbon monoxide and carbon dioxide by the oxygen molecules generated on the electrode.

Explanation:

In the electrolysis of Aluminium, the oxygen reacts with the carbon anodes forming carbon dioxide. That is, the anodes are oxidized. To ensure that the reaction completes, the anode must gradually be replaced as the reaction proceeds. The correct option is hence;

A) They get oxidized into carbon monoxide and carbon dioxide by the oxygen molecules generated on the electrode.

8 0

3 years ago

In 100 grams of sweet peas there are 14.5 carbohydrates,5.7 grams of sugars,5.1 grams of dietary fiber, 5.4 grams of protein and

Brums [2.3K]

14.5 % carb
5.7% sugar
5.1% fiber
5.4% protein
0.4% fat

7 0

3 years ago

The density of a metal is 11.4 g/cm3. How much volume (in cm3) would a sample of 30.5 g have?

julia-pushkina [17]

<u>The Concept:</u>

We are given the density of a sample of the metal = 11.4 grams / cm³

and we need to find the volume occupied by a sample of 30.5 grams

For this solution, we will use dimensional analysis

from the given information, we can also say that the density of the metal is:

1 cm³ / 11.4 grams

If we multiply this value by 30.5 grams, the 'grams' in the numerator and the denominator will cancel out and we will be left with the volume occupied by 30.5 grams of the metal

<u>Solving for the volume:</u>

$\frac{ 1 cm^{3} }{11.4 grams}$ X 30.5 grams = (30.5 / 11.4) cm³