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Aleksandr [31]
3 years ago
9

Why is Cellular Respiration so important?

Chemistry
1 answer:
Nesterboy [21]3 years ago
5 0
I say it’s A. Hopefully
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Which substance is used to remove rust from metal
wel
<span>Chemically speaking, rust is a base and any acid will remove it. The choice of acid is going to be the thing to consider, since acid + base = salt and water. Phosphoric acid left a residue because the salt Iron phosphate is insoluble in water. Iron's soluble salts include the chloride, the sulfate and the nitrate. Industrially speaking, you need to "pickle" your iron. Pickling is a process in which dilute sulfuric acid is used to remove any surface corrosion prior to either painting or plating an iron surface. Sulfuric acid is ordinary battery acid and the salt Iron sulfate is not toxic. Sulfuric acid is one of the most common acids used (besides hydrochloric acid). The dilute kind is not terribly corrosive but concentrated sulfuric acid is a thick, syrupy liquid which can cause some nasty chemical burns if allowed to remain on the skin. It also heats up quite a lot when water is added, so this is an "Acid to water not water to acid" situation. The other choice is Hydrochloric acid, known as muriatic acid. The 20% concentrate is available in nearly any hardware store. It isn't as corrosive as concentrated sulfuric acid, but it has a burning, acrid stench, so never use the concentrate without adequate ventilation. It is ordinarily used to remove hard water deposits (boiler scale) but does a good on on rust as well. Concentrated Iron chloride isn't entirely inert but lots of rinsing will turn it back into harmless rust/sludge, especially if the rince water is naturally hard. Nitric acid will remove corrosion from anything, but it is extremely corrosive, smells worse then Hydrochloric acid and isn't easy to get, since it can be used to create some powerful explosives</span>
3 0
3 years ago
Read 2 more answers
WORTH 100 POINTS
hjlf

Answer:

When 0.250 moles of a gas is placed in a container at 25 °C, it exerts a pressure of 700 mm Hg.

Explanation:

5 0
3 years ago
el diametro de la tierra en el ecuador es de 7926381 ml. redondee este numero a tres cifras significativas y expresel en notcion
elena55 [62]

7.93 x 10⁶mi

Explanation:

Significant figures are numbers that shows how accurate and precise scientific measurements are reported.

Here are some rules to identifying them;

  • All non-zero digits are significant
  • zeros between digits are significant
  • leading zero before a decimal are not significant
  • trailing zero after a decimal are significant
  • trailing zero before a decimal point are significant.

The number 7926381  has 7 significant numbers.

To write in the scientific notation, we simply express as N x 10ᵃ

   N is the number of significant number

   a is the exponent

N here is 7.93

a here is 6

            7.93 x 10⁶mi

learn more:

Significant figures brainly.com/question/2746374

#learnwithBrainly

7 0
2 years ago
Write a balanced equation for the complete combustion of solid palmitic acid. Remember that oxygen (O2(g)) is necessary for the
Alina [70]

Answer:

C₁₆H₃₂O₂ (s) + 22O₂(g) → 16CO₂(g) + 16H₂O(g)

Explanation:

In order to determine a combustion reaction we should know that:

Reactants are: X compound and O₂

Products are: CO₂ and H₂O

In this case, the X compound is the solid palmitic acid: C₁₆H₃₂O₂

The balanced equation will be:

C₁₆H₃₂O₂ (s) + 22O₂(g) → 16CO₂(g) + 16H₂O(g)

3 0
2 years ago
Calculate the pH of a solution with [H+]= 1 x 10^-6M
Pie

Answer:

pH=6

Explanation:

3 0
3 years ago
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