Is carbohydrate a element or compound

Answers

Answer 1

Answer: compound. An element is just composed of itself. A carbohydrate is a complex compound made with carbpn and lots of other elements

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What event marks the beginning of Earth's current era?O A. The emergence of human life
O B. A mass extinction
O C. The disappearance of land bridges
O D. The end of the last ice age

Answers

B. We are in the cenzoic era so what previously had happen to cause the life we live today was a huge mass extinction.... hope this helps!!

Answer:

A mass extinction

Explanation:

Based on the law of Conservation of Mass, what happens to the mass of a substance in a chemical change? A: the mass is always conserved B: The mass is either created or destroyed C: the reactant always has more mass D: the product always has more mass

Answers

Answer:

Explanation:

The amount of mass always stays the same, matter cannot be created nor destroyed, it can only change forms. Thus, the answer is A.

In a chemical reaction the total mass of all the substances taking part in the reaction remains the same. Also, the number of atoms in a reaction remains the same. Mass cannot be created or destroyed in a chemical reaction.

I hope this helps..

Under conditions when glucose oxidation is elevated, the acetyl-CoA produced will allosterically activate which of the following enzymes leading to an increase in the production of oxaloacetate?a. Pyruvate carboxylase

b. Citrate lyase

c. Acetyl-CoA carboxylase

d. Malate dehydrogenase

Answers

The correct answer is ( a. Pyruvate carboxylase).

When glucose oxidation is elevated, the acetyl-CoA produced will allosterically activate the enzyme pyruvate carboxylase, leading to an increase in oxaloacetate production.

Pls help i need the Formula how can you calculate the number of electrons present in a shell? pls help!!! will give brainliest

Answers

Answer:

The maximum number of electrons present in a particular shell is calculated by the formula 2n2, where “n” represents the shell number. For instance, K shell is the first shell and it can hold up to 2(1)2 = 2 electrons. Similarly, L shell is the second shell and it can hold up to 2(2).

A student blows up a ballon and then places it in a very cold freezer the ballon shrunk after hours why!?

Answers

Temperature is directly related to the speed of the molecules such that as the temperature decreases, so does the speed of the molecules. When the balloon was placed in the freezer, the temperature plummeted and so the molecules moved less. Due to this lack of movement, less space was used by the balloon so it shrunk.

If x is 5, then 6x = ___.
30
30x
5x

Answers

If X is 5, then 6X is equal to 30. You can see to be able to get 30, you have to multiply 6 to X, which in this case is 5. So 6 times 5, you will now get the answer which is 30. In cases that X have other values, you just have to multiply it with 6 to get the answer. This problem can not have 30x or 5x as the results. As the value of X is already given, then, you will get the answer specifically.

The answer is 30, A :)

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