please help quickly!
for the first one ignore what i have pressed as i just guessed and it wont let me remove answers

Answer:

Please mention elements so i can answer it

Explanation:

Answer:

Because 60 percent of our body weight is made up of water. Our bodies use water in all the cells, organs, and tissues, to help regulate body temperature and maintain other bodily functions.

Explanation:

Our bodies is made out of 60% water and even if the percentage goes down 1% we could faint. 5% and we could die. We wash off with water to clean ourselves. We use water to cook like boiling pasta. Water is a necessity not just humans need it but plants need it to grow and germinate. Hope this helps sorry it took so long. I had a fight with autocorrect.

Answer:

I think the last one

Explanation:

The reason for that is because when you go up to present something you always want to try to hav believability and confidence.

Answer:

believability and confidence

Explanation:

Answer:

what do you mean by magnetic and sound energy

Answer:

V = 2.75 L

Explanation:

Given that,

Mass of liquid glycerol, m = 3470 g

The density of liquid glycerol, d = 1.26 g/cm³

We need to find the volume of liquid glycerol.

We know that,

Density=mass/volume

[tex]V=\dfrac{m}{d}\\\\V=\dfrac{3470\ g}{1.26\ g/cm^3}\\\\V=2753.96\ cm^3[/tex]

We know that, 1 cm³ = 0.001 L

V = 2.75 L

So, the volume of liquid glycerol is 2.75 L.

Answer:

100 degrees Celsius

Explanation:

If  you look at the to number lines you want to find 212 degrees Fahrenheit on the bottom line then look at the top number line where the 212 lines up which is 100 degrees Celsius.

Answer:

B.

Explanation:

Answer:  p = m/Vp = 39.5 g/5.0 cm3p = 7.9 g/cm3 4.

Answer:

Nitrogen group element, any of the chemical elements that constitute Group 15 (Va) of the periodic table. The group consists of nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), bismuth (Bi), and moscovium (Mc)

Explanation:

Answer:

334.2× 10²³ molecules

Explanation:

Given data:

Mass of water = 1 Kg ( 1000 g )

Number of molecules = ?

Solution:

Number of moles of water:

Number of moles = mass/ molar mass

Number of moles = 1000 g/ 18 g/mol

Number of moles = 55.5 mol

1 mole contain 6.022× 10²³ molecules

55.5 mol×6.022× 10²³ molecules

334.2× 10²³ molecules

Answer:

c . A substance that cannot be broken down into simpler substances

Explanation:

The best description of an element is that it is a substance that cannot be broken down into simpler substances.

An element is a pure substance but it is the simplest unit by which chemical reactions can take place.

Answer:

conclusion.

Explanation:

electric energy to heat and light energy

Answer:

Explanation:

What is this?

Answer:

Decrease the temperature

Explanation:

If you increase the temperature the vapor pressure will increase. Adding more liquid to the container is completely irrelevant.

Decreasing the temperature would reduce the vapor pressure of a sealed container of liquid. Therefore, option (C) is correct.

Vapour pressure is the pressure that the vapour phase puts on the liquid phase when the two phases are in balance. At higher temperatures, the molecules of the liquid have more energy and are more likely to move into the vapour phase. This makes the vapour pressure go up.

But when the temperature goes down, the average energy of the molecules in the liquid goes down, which slows the rate of evaporation. This means that fewer molecules are moving from the liquid phase to the vapour phase. As a result, the vapour pressure is lower.

Putting more liquid in the bottle wouldn't change the vapour pressure directly. The temperature and the type of liquid, not the amount, are what decide the vapor pressure.

Learn more about Vapor Pressure, here:

https://brainly.com/question/29640321

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Answer:

how am i suppose to put it in largest to smallest if u didnt give any numbers

Answer:

B and C

Explanation:

Answer:

C

Explanation:

K,Na, Li all elements found in group 1

Answer: Positive- Protons

Negative- Electrons

Explanation:

chemical that appears as a colorless liquid, is used in a wide range of cleaning and personal care products, including hair dyes and bleaches, toothpaste and mouthwashes, bathroom cleaners and laundry stain removers. Hydrogen peroxide can also be found in over-the-counter first aid antiseptics, and it is used as a bleaching agent in some food products. It has other consumer and industrial uses as well, including water treatment.

Share:

Answer:

Erythrocytes

Erythrocytes do not contain a nucleus. This would make answer choice "A" correct. Erythrocytes are red blood cells and these cells differ from the other cells of the body because of the absence of the nucleus. All the other cells noted have nuclei.

Explanation:

Have A Wonderful Day !!

Answer:a. Prokaryotes

Explanation:

Answer:

As: Negative

Rb: Positive

Te: Positive

Al: Positive

220 g H₂O

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

12 moles H₂O (water)

Step 2: Identify Conversions

Molar Mass of H - 1.01 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of H₂O - 2(1.01) + 16.00 = 18.02 g/mol

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

216.24 g H₂O ≈ 220 g H₂O

Answer:

Yes

Explanation:

Remember, Newton's third law of motion; which says in part that "Every action has an equal and opposite reaction."

Hence, in this case, the fact that the doorbell rang out implies that there was another force that was exerted on it; which is, John's finger pressing the doorbell.

In other words, when John uses his fingers to press the doorbell button he applies a force (a mechanical force), and that force results in an opposite reaction; the ringing of the doorbell.

Answer:

F=ma

=(0.3kg) (50m/s/s)

F =15 kg per m/s/s

Answer:

Double displacement reaction

Explanation:

Given expression:

          KOH   +    AlCl₃   →   Al(OH)₃  +  KCl

The reaction shown above is a double displacement reaction or double decomposition or double replacement reaction. This type of reaction involves an actual exchange of partners to form new compounds.

For example:

         AB + CD  →   AD + CB

Such reactions are driving by one of the following factors:

Answer:

V₂ = 30.20 L

Explanation:

Given data:

Initial volume = 45 L

Initial temperature = 298 K

Final temperature = 200 K

Final volume = ?

Solution;

The given problem will be solve through the Charles Law.

According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume  

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

V₂ = V₁T₂/T₁  

V₂ = 45 L × 200 K / 298 k

V₂ = 9000 L.K / 298 K

V₂ = 30.20 L

Answer:

Subatomic particles

Explanation:

I hope it helped

Answer:

A. Rock fragments are layered and pressurized over time.

Explanation:

Sedimentary rocks are derived from pre-existing rocks that have been subjected to agents of denudation, weathered, transported and deposited within a basin.

In the basin, the sediments are accumulated in their final resting position.

Answer:

Explanation:

Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).