when the concentration of hydrogen ions in a solution is decreased by a factor of ten, the pH of the solution

ben helps his dad make chicken soup. their recipe makes 15 cups of soup. if they each eat 2 cups and freeze the rest will the le

VikaD [51]

No ,8 x 15 is 90,90-4 is 86

5 0

3 years ago

CARBOHYDRATES are found primarily in plant-based foods and are a major source of energy in the body (4 kcals per gram). If you c

SVETLANKA909090 [29]

Answer:

The 200 grams of carbohydrate would this convert to 800 kcals in a day.

Explanation:

Carbohydrates are the source of energy. The metabolism of 1 gram of carbohydrates gives 4 kcals of energy.

If 200 grams of carbohydrate is consumed in a day, then the energy provided by it is:-

$Energy\ provided\ by\ the\ carbohydrate = 200\times 4\ kcals=800\ kcals$

The 200 grams of carbohydrate would this convert to 800 kcals in a day.

4 0

3 years ago

Which of the following is a galvanic cell?

Gemiola [76]

Answer:

i think Aluminum (Al) oxidized, zinc(Zn) reduced

5 0

3 years ago

Which part of the nervous system is a gray, wrinkly organ made up of millions of neurons? A. nerves B. brain C. spinal cord D. e

irakobra [83]

The answer to your question is b the brain

6 0

3 years ago

Read 2 more answers

Why do we have to balance chemical equations

Lunna [17]

Answer:

Chemical equations are balanced to comply with the law of conservation of mass.

Explanation:

Law of conservation of mass states that matter cannot be either created or destroyed.

A skeleton chemical equation shows the reactants and products of a chemical reaction without taking into account the real proportion in which the reactants combine and the products are obtained.

An example of a skeleton reaction is the combustion of methane:

CH₄ + O₂ → CO₂ + H₂O

Such as that equation is shown, there are four atoms of hydrogen in the reactants but only 2 atoms of hydrogen in the products. Also, there are 2 atoms of oxygen in the reactants but three atoms of oxygen in the products. This seems to show that some atoms of hydrogen have been destroyed and some atoms of oxygen have been created. This is impossible as it is against the law of conservation of matter.

Then, to show a real situation, the chemical equation of combustion must be balanced, adjusting the coefficients. This is the balanced chemical equation:

CH₄ + 2O₂ → CO₂ + 2H₂O

Now you see that the number of atoms of each matter is conserved: the number of carbon atoms in each side is 1, the number of atoms of hydrogen in each side is 4, and the number of atoms of oxygen in each side is 4. Thus, by balancing the chemical equation, the law of conservation of mass is not violated.

7 0

4 years ago