CHEMISTRY HIGH SCHOOL

A material found in air, water, or soil that is harmful to humans or other organisms1. Experiment
2. Hypothesis
3. Pollutant
4. Matter

Answers

Answer 1
Answer: the answer is pollutant

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In the solid state, which type of bonding between particles best allows for the conduction of electricity? a ionic b metallic c polar covalent d nonpolar covalent
3 clues that indicate a chemical change
The element carbon is present in all organic compounds. Which reason would explain why there are so many different types of organic compounds? A) Carbon is a nonmetal. B) Carbon has an atomic number of six. C) Carbon can form four covalent bonds. D) Carbon has a total of six electrons.
Consider the balanced equation. N2 + 3H2 mc033-1.jpg 2NH3 What is the percent yield of NH3 if the reaction of 26.3 g of H2 produces 79.0 g of NH3?
Which statement best describes gamma radiation?(1) It has a mass of 1 and a charge of 1. (2) It has a mass of 0 and a charge of –1. (3) It has a mass of 0 and a charge of 0. (4) It has a mass of 4 and a charge of +2.

Which scientific tool is the most useful when trying to convert a known amount of grams of water to moles of water?a scale
a thermometer
a periodic table
a spectrophotometer

Answers

The correct answer is the third option. A periodic table is the scientific tool that is most useful when trying to convert a known amount of grams of water to moles of water. Converting the amount of a substance from grams into moles, the molar mass is needed where it is the mass of a substance per 1 mole of the substance. This value is written in the periodic table.

c. a periodic table

Explanation:

i took the quiz lol have a great day. Jesus loves ya'll!

Which statement defines the temperature of a sample of matter?1) Temperature is a measure of the total electromagnetic energy of the particles.
2) Temperature is a measure of the total thermal energy of the particles.
3) Temperature is a measure of the average potential energy of the particles.
4) Temperature is a measure of the average kinetic energy of the particles.

Can someone help me with this? 

Answers

The correct answer is D.

It is known with definition of temperature.
Temperature of a system is average energy of microscopic motions of a single particle.
It's average kinetic energy.

Why would an electrician use parallel circuits to wire the lights in each room of a house instead of using a series circuit?A.
When electricians get their license, they are only licensed to install parallel circuits. Most electricians aren't certified to install series circuits.

B.
Parallel circuits prevent electrons from flowing if part of the circuit is broken and therefore prevent fires. Series circuits cause more fires because electrons still flow.

C.
Electrons continue to flow in a parallel circuit even if part of the circuit is broken. In a series circuit, a break such as a burned out lightbulb would cause the current to stop in the whole room.

D.
Parallel circuits are much easier to wire and are required by the electrical code for housing construction in most communities. Series circuits are sometimes used with special approval.

Answers

C: Electrons continue to flow in a parallel circuit even if part of the circuit is broken. In a series circuit, a break such as a burned out lightbulb would cause the current to stop in the whole room!

The heart is protected from the bones by the .

Answers

The heart is protected from the bones by the rib cage or the thoracic cage. It protects both the heart and the lungs. The rib cage is composed of 12 pair of ribs, the sternum and thoracic vertebrae. All ribs are connected to the thoracic vertebrae. The rib cage also do not only protect the heart and lungs but also support the body and aid in respiratory function.

when you check a toaster with a digital or analog video in which one of the following indicates dirty contacts on the thermostat blade

Answers

i sow it the answer if you serarch it in the box i see it the same question!

Answer:

Explanation:current higher

Than the rated current

How many grams of water will form if 10.54 g H2 react with 95.10 g O2?

Answers

The mass of water that will be produced if 10.54 g of H₂ react with 95.10 g of O₂ is 94.86 g

Balanced equation

2H₂ + O₂ —> 2H₂O

Molar mass of H₂ = 2 × 1 = 2 g/mol

Mass of H₂ from the balanced equation = 2 × 2 = 4 g

Molar mass of O₂ = 2 × 16 = 32 g/mol

Mass of O₂ from the balanced equation = 1 × 32 = 32 g

Molar mass of H₂O = (2×1) + 16 = 18 g/mol

Mass of H₂O from the balanced equation = 2 ×18 = 36 g

SUMMARY

From the balanced equation above,

4 g of H₂ reacted with 32 g of O₂ to produce 36 g of H₂O

How to determine the limiting reactant

From the balanced equation above,

4 g of H₂ reacted with 32 g of O₂

Therefore,

10.54 g of H₂ will react with = (10.54 × 32) / 4 = 84.32 g of O₂

From the calculation made above, we can see that only 84.32 g out of 95.10 g of O₂ given, is needed to react completely with 10.54 g of H₂.

Therefore, H₂ is the limiting reactant.

How to determine the mass of water produced

From the balanced equation above,

4 g of H₂ reacted to produce 36 g of H₂O

Therefore,

10.54 g of H₂ will react to produce = (10.54 × 36) / 4 = 94.86 g of H₂O

Thus, 94.86 g of H₂O were obtained from the reaction.

Learn more about stoichiometry:

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