H2+ ½ O2 → H2O + 285kJ is an example of a(n)

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Answers

Answer 1

Answer:

Answer:

Exothermic reaction

Explanation:

Notice that the energy component is located on the right side of the reaction. The right side is always known as the product side. Whenever energy is located there, the reaction is known to give off energy - essentially, we can say that energy is a product, as well. Reactions that give off energy are known as exothermic reactions.

On the other hand, if the energy component was located on the left side, or reactant side, of the equation, it would be known as an endothermic reaction.

Here, it's exothermic.

Hope this helps!

Answer 2

Answer:

Answer: Heat equation

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3Pb(s) + 2H3PO4(l) →

Answers

Answer:

3Pb(s) + 2H3PO4(l) →H3PO4 + Pb3(PO4)2 H2

Explanation:

I hope I helped you :P

_____ is a process that helps fuel your metabolism.Deoxidation
Oxidation
Glycolysis
Hydrolysis

Answers

Glycolysis is a process that helps fuel your metabolism. It is apart of cellular respiration the process that helps produce ATP.

Explanation:

Glycolysis is the metabolic process that assists as the grounds for both aerobic and anaerobic cellular respiration. In glycolysis, glucose is transformed into pyruvate. Glucose is a six-membered circle molecule found in the blood and is regularly a result of the breakdown of carbohydrates into sugar.

Glycolysis is the process that helps fuel your metabolism. It generates energy in the form of ATP through the breakdown of glucose.

The metabolic process that helps fuel your body is known as Glycolysis. This is a series of reactions that takes place in the cell's cytoplasm, where glucose (a simple sugar) is broken down into two molecules of pyruvate. This process generates energy which gets stored in the form of ATP (adenosine triphosphate), a molecule that allows the body to perform various functions like muscle contraction, nerve impulse propagation, and chemical synthesis, etc. Hence, glycolysis supports the metabolism by providing necessary energy to the body.

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How many moles of oxygen atoms are present in 5 moles of Mg3(PO4)2

Answers

How many moles of oxygen atoms are present in 5 moles of Mg3(PO4)2

All you have to do is to create a ratio between the molecule and the oxygen atom.

5 moles of Mg3(PO4)2 (4x2 moles O/1 mole Mg3(PO4)2) = 40 moles of oxygen

What volume, in Liters, of a 2.00 M KCl solution contains 2.5kg of KCl? Molar mass of KCl= 74.55g/mole

Answers

According to the molar concentration, volume in liters of 2 M KCl solution is 16.76 L.

What is molar concentration?

Molar concentration is defined as a measure by which concentration of chemical substances present in a solution are determined. It is defined in particular reference to solute concentration in a solution . Most commonly used unit for molar concentration is moles/liter.

The molar concentration depends on change in volume of the solution which is mainly due to thermal expansion. Molar concentration is calculated by the formula, molar concentration=mass/ molar mass ×1/volume of solution in liters.

In terms of moles, it's formula is given as molar concentration= number of moles /volume of solution in liters.

Volume required is obtained by molarity formula as, 2×74.55/2500=1/V=0.05964

∴V=1/0.05964=16.67 L.

Thus, 16.67 L of 2 M KCl solution contains 2.5 kg of KCl.

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$C_(m)=(n)/(V_(r))\n\nn=(m_(s))/(M)\n\nC_(m)=(m_(s))/(MV_(r)) \ \ \ |*MV_(r)\n\nC_(m)MV_(r)=m_(s) \ \ \ |:C_(m)M\n\nV_(r)=(m_(s))/(C_(m)M)\n\n\nm=2.5kg=2500g\nM=74.55(g)/(mol)\nC_(m)=2(mol)/(L)\n\nV_(r)=(2500g)/(2(mol)/(L)*74.55(g)/(mol))\approx16.77L$

Which of the following nonmetals forms a gas commonly found in our atmosphere? Rn,Cl,I,or N

Answers

N, our atmosphere is about 80% nitrogen(N) and about 20% oxygen(O)

Nitrogen (N) our atmosphere is 80% N

Commercial fertilizers, which are made by humans, are used to enrich soil for healthier crops. However, erosion may carry the fertilizer chemicals to the oceans. The presence of these chemicals may cause certain kinds of algae to reproduce rapidly. This decreases the amount of oxygen in the water, which can cause organisms that depend on it, like fish, to die.Which statements describe the impact of the use of fertilizers? Select two options.

It improves the growth of crops.
It provides more food for fish.
It causes erosion and washes away soil.
It causes the death of crops.
It harms organisms that live in the oceans.

Answers

The statements that describe the impact of the use of fertilizers are as follows:

It harms organisms that live in the oceans
improves the growth of crops

What is the effect of eutrophication?

Eutrophication is the process that involves the addition of artificial or natural nutrients, mainly phosphates, through detergents, fertilizers, or sewage, to an aquatic system.

According to this question, commercial fertilizers, which are made by humans, are used to enrich soil for healthier crops. However, erosion may carry the fertilizer chemicals to the oceans which leads to eutrophication.

This eutrophication may cause certain kinds of algae to reproduce rapidly, hence, having the following impacts: