Can someone double check my work? I'm really not sure about the last one, but I do need all of them checked.
I got:
a) exo
b) endo
c) endo
d) endo​

Answer:

inside cells are removed

Answer:

1 gram =1000mg

Explanation:

Then 2.5g=2.5*1000

2500mg

Answer:

16. false (mass always stays the same)

17. false (that's weight)

18. true

19. true (I think)

20. false (same as 16 and 17)

hope I could help

True and false for each statement is:

16. false

17. false

18. true

19. true

20. false

Mass is the quantity of matter. It calculates the inertia of the body. It essentially refers to a body of matter's resistance to changing its speed or location in response to the application of a force. The change caused by an applied force is smaller the more mass a body has.

The mass of a body is the same everywhere, but the weight changes in different places due to gravity. The force of gravity is different in different places, so the weight changes.

That's, why the mass measurement does not include the effect of Earth's gravitational pull on the object. It's the weight.

Thus, the correct options are 16. false, 17. false, 18. true, 19. true, and 20. false.

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Explanation:

Copper has an atomic number of 29, so it contains 29 protons and 29 electrons. ... The atomic weight of copper is 64; it has 29 protons and 35 neutrons.

Answer:

209

Explanation:

Answer:

Four half lives

Explanation:

Answer:

Yes, A.) "More of the radioactivity is lost during the first half-life than in later half-lives."  is the correct answer!!

Explanation:

I took the practice test on edge

More of the radioactivity is lost during the first half-life than in later half-lives describes radioactive decay of a substance.Hence, Option (A) is Correct.

What is Radioactive Decay ?

Radioactive decay is the process by which an unstable atomic nucleus loses energy by radiation.

A material containing unstable nuclei is considered radioactive.

Three of the most common types of decay are alpha decay, beta decay, and gamma decay, all of which involve emitting one or more particles.

Therefore, More of the radioactivity is lost during the first half-life than in later half-lives describes radioactive decay of a substance.Hence, Option (A) is Correct.

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Answer:

"the temperature at which a liquid boils and turns to vapor." - Google Dictionary

Answer:

63.9 grams. Yes, the Nacl was converted.  Maximum possible ppm is 540ppm.

Explanation:

I this is college level chemistry not regular high school chem.  

Answer:2

Explanation:

it is it do not ask questions

Answer:

the higher the hill the faster it'll be when coming down it. if going up the hill then the speed will be slower

Explanation:

Answer:

There are 2 types of energy - kinetic and potential. Potential energy is built up, while kinetic energy is released. As the roller coaster goes higher, it pulls further away from gravity. As it goes down, it accelerates (Gains speed). The KINETIC ENERGY in the roller coaster grows as it goes down.

Your question is kind of confusing but I think I answered it correctly based on what you asked.

The scientific method attempts to minimize the influence of bias or prejudice in the experimenter. Even the best-intentioned scientists can't escape bias. It results from personal beliefs, as well as cultural beliefs, which means any human filters information based on his or her own experience.

Answer: Data

Explanation:

The answer is data because data is important pieces of evidence that is collected in a table or a graph.

Answer:

B. Data

Explanation:

Cuz is said so duh

Answer:

The atomic number of aluminum is 13.

Hope the pic helps! <3

Answer:

"Avogadro's law is an experimental gas law relating the volume of a gas to the amount of substance of gas present. The law is a specific case of the ideal gas law. A modern statement is: Avogadro's law states that "equal volumes of all gases, at the same temperature and pressure, have the same number of molecules."

Answer:

Avogadro's law states that the equal volume of all gases at the same temperature and pressure contain the same number of molecule

Answer:

[tex]V=14373.33\ \text{mm}^3[/tex]

Explanation:

It is given that,

The radius of the inflated balloon is 7 cm.

We need to find the volume of air inside the balloon in milliliters.

The balloon is in the shape of a sphere whose volume is given by :

[tex]V=\dfrac{4}{3}\pi r^3\\\\\text{Put r = 7 cm}\\\\V=\dfrac{4}{3}\times \dfrac{22}{7}\times 7\times 7\times 7\\\\V=1437.33\ \text{cm}^3\\\\\text{We know that, 1 cm = 10 mm}\\\\\text{So},\\\\V=14373.33\ \text{mm}^3[/tex]

Hence, the volume of the air inside the balloon is [tex]14373.33\ \text{mm}^3[/tex].

Answer:

0.157689 moles

Explanation:

Answer:

4,96 m

Explanation:

100 cm =1m

496 cm =4, 96 m

Answer:

Fluorine has 9 protons and 9 electrons

Iodine has 53 protons and 53 electrons

Explanation:

Answer:

B

Pottasium is very good for your body, but for humans to live, we necessarily do not really need potassium. Answer should be B.

Answer:

protons

Explanation:

Answer:

An arrangement of words written or spoken: traditionally a rhythmical composition, sometimes rhymed, expressing experiences, ideas, or emotions in a style more concentrated, imaginative, and powerful than that of ordinary speech or prose: some poems are in meter, some in free verse. noun.

Explanation:

please follow me and mark me as brainliest and give a thanks pleease.

Answer:

False, two objects can have separate chemical make-ups, yet still be the same density.

Answer:

Mass

Explanation:

because density is mass/volume

Silicon dioxide  is the compound

Answer:

Vocational training refers to instructional programs or courses that focus on the skills required for a particular job function or trade. Vocational training education prepares students for specific careers, disregarding traditional, unrelated academic subjects.

Answer:

This statement is correct

Explanation:

Water is made up of 2 hydrogen atoms and 1 oxygen atom while salt is made up of 1 atom of sodium and 1 atom of chloride

:)

Answer:

Ethane molecules have no hydrogen bonds and need less energy to separate.

Explanation:

Ethane: has no hydrogen bonding, it has low melting, boiling points, and is a gas at room temperature.

Water: has strong hydrogen bonding between H and O, has relatively high melting and boiling points.

Statement that explains the relationship between boiling point of water and ethane and how the boiling point of water is higher than ethane is D:Ethane molecules have no hydrogen bonds and need less energy to separate.

Therefore, option D is correct.

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Answer:

Phosphorus’ electron affinity value is more negative than the electron affinity value of sodium.

Explanation:

I got it correct

Answer:

Phosphorus’ electron affinity value is more negative than the electron affinity value of sodium

Explanation:

i got it right