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3 years ago

Can someone explain this to me please

Chemistry

1 answer:

Tju [1.3M]3 years ago

7 0

Answer:

Nitrogen plays an important role in the health and growth of all plants, and it is responsible for the green leaves you see growing on them. Nitrogen helps plants photosynthesize, which is a process that involves using energy from the sun to break down water and carbon dioxide so that sugars are formed.

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Recall what you know about the solar wind

Tanya [424]

Solar wind is a series of charges particles blasting off the sun as it fuses hydrogen and helium. This is extremely dangerous to humans and the earths magnetic field protects us from it.

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4 years ago

Question 4 How many carbon-carbon triple bonds are present in a molecule of 4,5-diethyloctane?

ivann1987 [24]

Answer:

We will have zero bonds

Explanation:

In this case, we have to start with the structure of 4,5-diethyloctane. This name ends with the suffix "ane" therefore we have an alkane. All the alkanes are made with single bonds between carbons and single bonds between carbon and hydrogen.

The molecule will have a carbon chain of eight carbons and we will have 2 branches, one ethyl on carbon 4 and another ethyl on carbon 5. (see figure 1)

5 0

3 years ago

What is added to white sugar to create brown sugar?

lesya692 [45]

Molasses is the answer

4 0

3 years ago

How many grams of oxygen are required to burn 0.10mole of c3h8?

Anastaziya [24]

1mol—44g/mol
0.10mol—x
x=0.10*44
x=4.4 g

8 0

3 years ago

A piece of aluminum weighing 10.0 grams is placed into a graduated cylinder that has an initial volume (before immersion) of 35.

padilas [110]

Answer:

The density of the metal sample is 2.70 $\frac{grams}{mL}$

Explanation:

Density is a magnitude that allows you to measure the amount of mass in a given volume of a substance. Then, the expression for the calculation of density is the ratio between the mass of a body and the volume it occupies:

$d=\frac{m}{V}$

Density, according to the International System of Units, is usually expressed in kilograms per cubic meter (kg / m3) or gram per cubic centimeter (g / cm3). Although it can also be expressed in any other unit of mass by volume.

So, for the calculation of density you know that:

mass of the sample= 10 grams
volume of the sample = volume on the cylinder after immersion - volume on the cylinder before immersion= 38.7 mL - 35.0 ml = 3.7 mL

Then:

$d=\frac{10 grams}{3.7 mL}$

d=2.70 $\frac{grams}{mL}$

The density of the metal sample is 2.70 $\frac{grams}{mL}$

5 0

3 years ago