Which statement best describes the movement of energy?.

Which statements are correct relative to carbohydrates?

inna [77]

Answer:

Hi, the statements given in the question (a and b) are combination of right and wrong answers. But i will split the statement a and b into necessary fragments.

Carbohydrates are quick source of energy relatively. That is the only correct statement in the question.

Explanation:

Carbohydrates are naturally occurring organic compounds containing carbon, hydrogen and oxygen with the general formula (Cx H2y Oy) or Cx (H2O)y. They can be classified into simple sugar or complex sugar.

Simple sugars can be further divided into Monosaccharides (e.g glucose, fructose and galactose) and Disaccharides (e.g sucrose and maltose).

Complex sugar can be referred to as Polysaccharides (e.g cellulose and starch)

The statement above that says carbohydrate contains carbon, hydrogen and nitrogen polymers is not correct.

Carbohydrates are not mostly monosaccharides. They also contain Disaccharides and Polysaccharides.

They are not the only source of fuel.

8 0

2 years ago

NEED HELP FAST!20 pts for an easy worksheet

rjkz [21]

On the bottom
1. sharing electrons
2. the middle two dots between the F:F

5 0

3 years ago

Sixty-three grams of copper reacted with 32 grams of sulfur. this chemical reaction produced the compound copper sulfide. what w

Nuetrik [128]

The mass of, $Cu_2S$ , compound formed is 77.9g

62 grams of copper reacted with 32grams of sulfur to form copper sulfide.

$Cu + S_2 \rightarrow CuS_2$

stoichiometry of Cu to S is 2:1

We need to find the limiting reactant

Molar mass of copper = 63.5 g/mol

Molar mass of Sulfur = 32 g/mol

Number of moles of Copper = $\dfrac{mass} {molar mass } = 0.99mole$

Number of moles of Sulfur = $\dfrac{mass} {molar mass} = \dfrac{32g} {32g/mol} = 1 mole$

Since copper have lesser number of moles, therefore the limiting reagent is copper so the amount of product formed depends on amount of Cu present

stoichiometry of Copper to $Cu_2S$ is 2:1

0.99 mol of Copper forms = $\dfrac{0.99} {2}$ = 0.49 mol of $Cu_2S$

Mass of $Cu_2S$ produced = Number of moles $\times$ Molar mass

Mass of $Cu_2S$ produced = 0.49 mol $\times$ 159 g/mol = 77.9g

Learn more about limiting reagent here-

brainly.com/question/9913056

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6 0

1 year ago

Silver is a precious metal. The price of silver fluctuates daily as it is traded on the open market. Look up the current market

Vlad [161]

Answer:

- Current market value of silver produced in the experiment = $0.2763

- Check Explanation for the appearance of leftover copper wire used in the experiment.

Explanation:

Price of Silver on today's market = $15.34 per troy ounce

Amount of Silver produced in the experiment = 0.56 g

31.1 g = 1 troy ounce

0.56 g = (0.56/31.1) = 0.01801 troy ounce

1 troy ounce = $15.34

0.01801 troy ounce = 0.01801 × $15.34 = $0.2763

The original reaction to extract the silver is one between Copper metal and the Silver Nitrate.

The Copper metal dissolves in the Silver Nitrate to give Copper Nitrate thereby displacing the Silver ion to become silver metal which we just valued above. But copper nitrate is a blue solution, So, it is a good estimate to say that the entire solution changed to that blue colour and the appearance of the leftover copper metal is colour blue. The silver metal forms as fractal-like crystals on this leftover copper.

Hope this Helps!!!

4 0

3 years ago

NEED HELP <br> WILL MARK DOWN BRAINLIEST

Komok [63]

1. In 1687 following 18 months of intense and effectively nonstop work
2.Hooke
3.Halley
4. Halley urged newton to write Principia mathematica and when the Royal society declined to pay the cost of publishing Halley paid for it out of his own pocket
5.Through using a telescope Galileo Galilei was able to prove the theories of sciences Isaac newton
6. He believe that the speed of an object motion is proportional to the force being applied and inversely proportional to the density of the medium he reason that the object moving in a void would move in definitely fast and thus any and all objects
7. An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force
8.gottfried wilhelm von leibniz

6 0

2 years ago