Chemistry High School

I can’t find the answer, can you help me please?

Answers

Answer 1

Answer: Warm ocean air then rises into the storm, then forming an area of low pressure underneath. :)

Explanation:

Related Questions

Drug addiction occurs in
age groups, from a
variety of backgrounds.
A young, narrow
B. all, narrow
C. all, wide

Answers

Answer:

A. young, narrow

Explanation:

Correct me if I am wrong

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Ethanoic acid is a weak acid because

Is a carboxylic acid
Does not irritate the skin
Is not completely ionized in water
Produces one hydrogen ion per molecule

Answers

Answer:

is not completely ionized in water

The ethanoic acid (acetic acid) is considered as a weak acid because it does not releases all of its hydrogen in water, rather it dissociates partially and establishes an equilibrium with its conjugate base.

In making a pizza, which process involves a chemical
change?
o mixing spices for the sauce
o slicing pepperoni for the topping
o spreading cheese on the pizza
o baking the dough to form the crust

Answers

Answer:

baking the dough to form the crust

In making a pizza, the process that involves a chemical change is baking the dough to form the crust.

What is chemical change?

Chemical changes occur when a substance combines with another to form an entirely new substance.

During a chemical change there is a formation of an entirely new product different from the original product.

Thus, In making a pizza, the process that involves a chemical change is baking the dough to form the crust.

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Which of the following is matter in its solid form?
O Air
O Electricity
O Rock
O Water

Answers

Water
It can be a solid or a liquid

how is a standard hydrogen atom different from a hydrogen ion?

Answers

Answer:

a hydrogen ion will have more or fewer electrons than a standard hydrogen atom.

Explanation:

ions are atoms that have lost or gained elections. this applies to ions in general.

assuming that no heat is lost to the surroundings, what is the final temperature of the mixture?

Answers

Well this should be pretty straightforward. If energy isn’t wasted then it should be the same temperature that you started with.
Conservation of energy says that energy cannot be created or destroyed, only transferred from one store to another.

10 What is a characteristic of all living organisms?
A breathing
Begestion
C
excretion
D ingestion

Answers

Answer:

D - ingestion

Explanation:

b. not ingestion, as plants are living but do not ingest.

In a compound, chemical energy is _______________ when bonds break.

Answers

Answer:

In a compound, chemical energy is _____required__________ when bonds break.

tijuan mixed a solid and a liquid together in a beaker

Answers

Tijuan mixed a solid and a liquid together in a beaker. He determined that a chemical change occurred. ... After a week, he observed that only solid salt remained in the cup and the mass had decreased I hope this helped! In some way

Which item is a good example of potential energy?
A thrown baseball
O Electricity
O A rock
A battery

Answers

A rock because it is stationary

I need help with this

Answers

Answer:

129 units cubed

Explanation:

There are ten spaces between 120 and 130, so we can infer that each line represents a change in volume of 1 unit. The volume of the substance in the graduated cylinder looks like it's 1 under 130, so its volume is 129 units.

Hopefully this was helpful! :)

rays with short wavelengths that are the least penetrating, produce chemical effects, and kill germs are

Answers

Answer:ultraviolet rays

Explanation:

What is the most common injury caused by working with machines unsafely?

Answers

Answer:

The most common injury caused by working with machinery are cuts and burns.

Explanation:

Cuts and burns are the most common injury caused by working with machines unsafely.

What is injury?

Any physiological harm to living tissue brought on by acute physical stress is referred to as an injury. An injury can be brought on by a blunt trauma, a piercing trauma, burning, exposure to chemicals, asphyxiation, or overexertion, and it can also happen accidentally. Any area of the body can become injured, and each injury has a unique set of symptoms.

Major injuries are normally treated by a medical practitioner, and the type of treatment depends considerably on the injury. The most frequent reason for accidental human injury or injury-related death is traffic crashes. Chronic conditions are different from injuries. Cuts and burns are the most common injury caused by working with machines unsafely.

Therefore, Cuts and burns are the most common injury caused by working with machines unsafely.

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What is helium an example of?
element
compound
atomic number
subatomic particle

Answers

I believe its element.

Answer:I believe it is Subatomic Particle.

Why are being flammable and combustible considered to be chemical properties and not physical properties?
A. They alter its mass and volume
B. They change the state of matter
C. They change the substance into another substance
D. They change the color of the substance

Answers

Answer:

C. They change the substance into another substance.

Explanation:

Hope it helps!!

how many elements belong to the alkali metal family

Answers

Answer:

six

Explanation:

check your periodic table

covalent bond of N and S

Answers

Answer:

Covalent bond between identical atoms

Covalent bonds occur between identical atoms or between different atoms whose difference in electronegativity is insufficient to allow transfer of electrons to form ions. ... The two hydrogen atoms are attracted to the same pair of electrons in the covalent bond.

could you help answer these two question

Answers

Answer:

number 29 is D

Explanation: When the moon orbits the earth some of the light reflects off the moon, making it visible on the Earth.

I dont know how to answer 28 fully, is there a picture?

Carbon monoxide (CO), carbon dioxide (CO2) and nitrogen dioxide (NO2) are low molecular weight covalent compounds. Which of the following best describes the state in which these compounds exist at Standard Temperature and Pressure (STP)?

solid

liquid

gas

plasma

Answers

Answer:

gas

Explanation:

at Standard Temperature and Pressure Carbon monoxide (CO), carbon dioxide (CO2) and nitrogen dioxide (NO2) exist as gases

Option C is correct

Low molecular weight covalent compounds

Covalent compounds are compounds that are characterized by strong Intra-molecular bonds and they are solids as they have higher molecular weights

But when compounds like Carbon monoxide (CO), carbon dioxide (CO2), and nitrogen dioxide (NO2) are formed with low molecular weight covalent bonds They exist as gases

Answers

Answer:

The average kinetic energy increases, and the particles collide more frequently.

Explanation:

What is the molarity of 6 moles (mol) of NaCl dissolved in 2 L of water?
O A.
2 mol
6L
ОВ.
6L
2 mol
O c.
6 mol
2L
O D.
2L
6 mol

Answers

Answer:

C: [tex]\frac{6 mol}{2 L}[/tex]

Explanation:

we can use the molarity equation

[tex]M = \frac{mol}{L}[/tex]

so to find M we plug in what we know, which is 6 moles of NaCl and 2 L of water, which gives us:

[tex]\frac{6 mol}{2 L}[/tex]

Answer:6 mol/2L

Explanation:just took the quiz

whats valency of nitrogen in N2O3, N2O5 and NO

Answers

Answer:

Valency of nitrogen in the given compounds:

N₂O₃ = +3

N₂O₅ = +5

NO = +2

-TheUnknownScientist 72

Which definition bests describes an hydrogen bond?
(a) A bond between an highly electronegative element and hydrogen
b.A bond between two non-metals
c.A bond between a metal and a non-metal
d.A bond involving sharing of electrons

Answers

I believe that A is the answer

The number 1x10^100 is called a googol. Write the number 50 googols in standard form.

Answers

Answer:

Explanation:

50 * 10^100 is 50 googols in scientific notation... but

come on, who would write that in standard form...

What fraction of the original atoms of the radioactive sample will remain after the given number of half-lives has passed?

Answers

Answer:

1/8

Explanation:

[tex] \frac{1}{ {2}^{3} } = \frac{1}{8} [/tex]

Mark brainliest please

Determine the mass of 10g of CaCO3

Answers

Answer:

= 100u. Hence 10 g = 0.1 mole. Hope it's helpful to u

Where does the energy of a hurricane come from? (1 point)
O the Sun
O strong winds
O Earth's spin
O Earth's moon

Answers

Answer:

strong winds come from the energy of a hurricane

The energy of a hurricane come from strong wind. The Taino Native American term hurricane, which translates to "bad spirit of the wind," is where the word hurricane originates.

What is hurricane ?

A tropical storm that has sustained winds of 74 mph or greater is referred regarded as a hurricane. A storm's eye typically measures 20 to 30 miles in width and can reach distances of 400 miles. Storms can be dangerous because of their torrential downpours, strong gusts, and storm surges.

When warm, humid air begins to rise over water, hurricanes emerge. Cooler air replaces the rising air. Large clouds and thunderstorms continue to grow as a result of this process. Thanks to the earth's Coriolis Effect, these thunderstorms are still expanding and starting to rotate.

Thus, option B is correct.

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guys- my science teacher doesn't teach, he just says go on schoology

Answers

The relative mass of each element can be found from the periodic table (the larger number). For instance, P2O5, P = 31.0 O = 16.0, thus the formula mass (Mr) is 2(31) + 5(16) = 142 amu (atomic mass unit). I used a not really specific periodic table. Maybe your teacher is referring to open Schoology (a website where teacher can post files or announcements to students in his or her class). Sorry if i got something mistaken.

Which one of the following is a measure of the certainty of a
result comparing to a given value or the agreement of
measurements?
a. Accuracy
b. precision
c. Percentage
d. Uncertainty

Answers

Answer: a. Accuracy how close is your measurement tot the true value

Explanation:

Which one of the following is a measure of the certainty of a

result comparing to a given value or the agreement of

measurements?

a. Accuracy how close is your measurement tot the true value

b. precision; how close are yourr measurements to each other

c. Percentage: the ratio of tour measurement to the true value X 100

d. Uncertainty: how unsure are you of your measurements

Which of the cells is flat and protects you?

Answers

Answer:

Skin cells are flat and protect you!

Explanation:

Answer:

Epithelial cells are the safety shields of the body. Take another look at your hand. It is covered with epithelial cells that protect your body by being a barrier between your internal cells and the dirt and microbes in the environment.

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