CHEMISTRY MIDDLE SCHOOL

Is the following chemical equation balanced? 2Na + 2H2O 2NaOH + H2 yes or no

Answers

Answer 1
Answer: yes the given chemical equation is balanced chemical equation
Answer 2
Answer:

Answer:

yes

Explanation:

hope this helps

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What causes genetic variation in a population

Answers

Answer: Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

Proteins carry out cellular functions. where do they get instructions?

Answers

Photosynthesis and cellular respiration go hand and hand. Remember the two equations are just a reverse of the opposite equation. 

Cellular Respiration-
C₆H₁₂O₆ + 6O₂ (Yeilds or Makes) 6CO₂ + 6H₂O + ATP (Or Energy)

Photosynthesis-
6CO₂ + 6H₂O + ATP (Or Sunlight) (Yeilds or Makes) C₆H₁₂O₆ + 6O₂  

When a plant goes through photosynthesis it produces oxygen as a waste product, which you should know is what animals use to breathe, well when animals use oxygen in the process, they also make a waste product which happens to be Carbon Dioxide, which a plant uses to make glucose during photosynthesis, so if we didin't have one we wouldn't have the other.

ANSWER: Cells get their instruction from the formula.

Name the biome that has nutrient rich soil and is most often used for agriculture

Answers


I think its grasslands


hope this helps!!!

Which of these is a mixture?a. oxygen
b. air
c. carbon dioxide
d. carbon

Answers

Answer is: b. air.

Homogeneous mixture (air) has the same proporties of its components (nitrogen, oxygen, carbon dioxide) throughout any given sample.

Together, nitrogen (N₂) and oxygen (O₂) by volume account for 99,03% of the gases composing the dry air in the lower atmosphere.

Volume of nitrogen in air is 78,08%.

Volume of oxygen in air is 20,95%.

Together: 78,08% + 20,95% = 99,03%.

.When Mendeleyev published his periodic table, there were some spaces for undiscovered elements. FIgure 15-1 is a section of a similar table. A reasonable value for the atomic mass of the missing element is__.A. 101

B.72.3

C.68.2

D.34.8

Answers

It's B. 72.3
(if you go to Connections Academy.)

How do you use chemical property in a sentence? (keep it at an 8th-grade science level please)

Answers

Chemical property can be referred to as a reaction into which a substance is changed
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