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Paha777 [63]
3 years ago
7

The amount of force applied per unit area is known as which of the following?

Chemistry
1 answer:
Anon25 [30]3 years ago
5 0
A:pressure because it's the force that presses us down to earth which is also gravity.
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What does the atomic number tell you about the atom of the element
andrew-mc [135]

The atomic number of an element tells you the number of protons within said element.

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3 years ago
What must a plant need to produce 4 molecules of sugar?
Amiraneli [1.4K]

Answer:

24 molecules of H20

Explanation:

Photosynthesis:

It is the process in which in the presence of sun light and chlorophyll by using carbon dioxide and water plants produce the oxygen and glucose.

Carbon dioxide + water + energy →   glucose + oxygen

water is supplied through the roots, carbon dioxide collected through stomata and sun light is capture  by chloroplast.

Chemical equation:

6H₂O + 6CO₂ + energy  →   C₆H₁₂O₆ + 6O₂

it is known from balanced chemical equation that 6 moles of carbon dioxide react with the six moles of water and created one mole of glucose and six mole of oxygen.

consider 1 mole contain 1 molecule.

So in order to produced 4 molecules of sugar number of molecules of water carbon dioxide needed are,

6 × 4 = 24 molecules

24 molecules of water and 24 molecules of carbon dioxide needed.

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3 years ago
Which of the following parts of the electromagnetic spectrum have longerwavelengths than those witnessed in the visible spectrum
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Infrared radiation is the only one with wavelengths longer than the wavelengths of visible light. X-rays and gamma rays are known to be shorter than visible wavelengths, and cosmic waves are only high energy particles. I hope this helped. And sorry about the late answer...
3 0
3 years ago
Read 2 more answers
Predict the sign of ΔS° for 2NO2(g) LaTeX: \longrightarrow⟶ N2O4(g) CaCO3(s) + 2HCl(aq) LaTeX: \longrightarrow⟶ CaCl2(aq) + H2O(
prisoha [69]

Answer: a. 2NO_2(g)\rightarrow N_2O_4(g): \Delta S is negative

b. CaCO_3(s)+2HCl(aq)\rightarrow CaCl_2(aq)+H_2O(l) : \Delta S is negative

c. Ag^+(aq)+Cl^-(aq)\rightarrow AgCl(s): \Delta S is negative

Explanation:

Entropy is the measure of randomness or disorder of a system. If a system moves from  an ordered arrangement to a disordered arrangement, the entropy is said to decrease and vice versa

a)  2NO_2(g)\rightarrow N_2O_4(g)

In this reaction 2 moles of gaseous reactants are converting to 1 mole of gaseous products. The randomness will decrease and hence entropy will also decrease. Thus \Delta S is negative.

b) CaCO_3(s)+2HCl(aq)\rightarrow CaCl_2(aq)+H_2O(l)

In this reaction solid reactants are converting to aqueous products. The randomness will increase and hence entropy will also increase. Thus \Delta S is positive.

c) Ag^+(aq)+Cl^-(aq)\rightarrow AgCl(s)

In this reaction aqueous reactants are converting to solid products. The randomness will decrease and hence entropy will also decrease. Thus \Delta S is negative

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3 years ago
How many grams of copper
iren [92.7K]
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