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2 years ago

Which of the following is necessary for photosynthesis?

Chemistry

1 answer:

Shkiper50 [21]2 years ago

4 0

Answer:

Explanation:

Water is necessary. Since during photosynthesis water reacts with carbon dioxide to form glucose and oxygen.

Calcium is a big NO!!.

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I need help pls! :[

baherus [9]

dm me on brainly so i can elp you

6 0

2 years ago

Determine the spec gravity of 500 mL alcohol if the density is 0.79g/ml

slava [35]

Answer:

S.G = 0.79.

Explanation:

Hello there!

In this case, according to the given information in the problem, it turns out possible for us to calculate the specific gravity of this alcohol by simply dividing its density, 0.79 g/mL by that of the water, 1 g/mL just as a reference for us to work with:

$S.G=\frac{\rho _{alc}}{\rho _w}$

Thus, we plug in the densities to obtain:

$S.G=\frac{0.79g/mL}{1g/mL}\\\\S.G=0.79$

Which is dimensionless as g/mL is cancelled out due to its presence on both top and bottom of the previous formula.

Regards!

8 0

3 years ago

Heat flows in the ocean and the atmosphere is

Nutka1998 [239]

Answer:

Cool flows down-warm flows up

Explanation:

3 0

2 years ago

If an atom has 15 protons, 14 neutrons, and 16 electrons, what is the atom's electrical charge? A. -2 B. +1 C. +3 D. -1

Amiraneli [1.4K]

The electrical charge of an atom having 15 proton, 14 neutrons and 16 electrons is -1. The correct option is D.

What is an atom?

An atom is the smallest unit of any matter which comprises of central nucleus and electrons revolving around the nucleus in definite energy shells. The atom is made up of protons, neutrons and electrons.

The electrical charge of an atom can be calculated as,

Charge of an atom = number of protons - number of electrons

Charge = 15 - 16 = -1.

The neutrons are neutral and do not contribute to the charge, the protons are positively charged and electrons are negatively charged in an atom.

Therefore, the charge of an atom with 15 protons, 14 neutrons and 16 electrons is -1. The correct answer is option D.

To learn more about atom click on the given link brainly.com/question/6258301

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3 0

1 year ago

A frying pan needs a Teflon coating of 1.00 mm in thickness to cover an area of 36.0 square inches. How many ounces of Teflon ar

Otrada [13]

Answer:

m = 0.659 ounce

Explanation:

It is given that,

The thickness of a Teflon coating is, d = 1 mm

Area of the coating, A = 36 inch²

The density of Teflon, d = 0.805 g/mL

We need to find ounces of Teflon are needed.

Firstly, find the volume of the Teflon needed,

1 inch² = 6.4516 cm²

36 inch² = 232.258 cm²

Density,

$\rho=\dfrac{m}{V}$

V is volume of the Teflon needed, V = Ad

So,

$m=\rho V\\\\m=0.805\ g/cm^3\times 232.258\ cm^2 \times 0.1\ cm\\\\m=18.69\ g$

Also, 1 gram = 0.035274 ounce

18.69 gram = 0.659 ounce

So, 0.659 ounces of Teflon are needed.

3 0

3 years ago