i need the last one to be filled out

Answer:

They dissolve easily in the body’s fluids

Answer:Evaporation

Explanation: Evaporation is the process by which heated liquids converts to gas which transform to damp air which later come as rainfall

Answer:

Argumentation is a process for reaching agreements about explanations and design solutions. In science, reasoning and argument based on evidence are essential in identifying the best explanation for a natural phenomenon. In engineering, reasoning and argument are needed to identify the best solution to a design problem.

Explanation:

I'm not sure if that helps, sorry!

Answer: evidence/proof

Explanation:I’m always right

Answer: the first paragraph is rain forest biome and the 2nd one is arctic tundra biome and finally the last paragraph is ocean or marine biome

Explanation:

rain forests have warm temperatures and include alot of animals and plants , artctic tundra biome includes cold temperatures ice stuff and all that and ocean or marine biome is pretty much just the ocean with seals , whales and marine life yk.

Answer:

0.5 M

Explanation:

First we have to start with the molarity equation:

\(M=\frac{mol}{L}\)

We need to know the amount of moles and the litters.

If we have 100 mL we can convert this value to “L”, so:

\(100~mL\frac{1~L}{1000~mL}\)

\(0.1~ L\)

Now we can continue with the moles, for this we have to know the formula of sodium sulfate \(Na_2SO_4\), with this formula we can calculate the molar mass if we know the atomic mass of each atom on the formula (Na: 23 g/mol, S: 32 g/mol, O: 16 g/mol). We have to multiply each atomic mass by the amount of atoms in the formula, so:

\(molar~ mass~=~ (23*2)+(32*1)+(16*4)= ~ 142~ g/mol\)

In other words:

\(1~mol~ Na_2SO_4=~142~g~ of~Na_2SO_4\)

Now we can calculate the moles:

\(7.1~g~ of~Na_2SO_4\frac{1~mol~ Na_2SO_4}{142~g~ of~Na_2SO_4} \)

\(0.05~mol~ Na_2SO_4 \)

Finally, we can calculate the molarity:

\(M=\frac{0.05~mol~ Na_2SO_4 }{0.1~ L}\)

\(M=0.5\)

I hope it helps!

Answer:

0.50M of solution

Explanation:

Molarity is defined as the ratio between moles of solute (In this case, sodium sulfate, Na₂SO₄) per liter of solution.

Moles of 7.1g of Na₂SO₄ (Molar mass: 142g/mol) are:

7.1g Na₂SO₄ × (1mol / 142g) = 0.05 moles of Na₂SO₄.

In 100mL = 0.100L:

0.05 moles Na₂SO₄ / 0.100L = 0.50M of solution

c. The atom becomes positively charged

if the electrons are removed it means theres no longer a negative charge to balance the positive charge of the protons in the atom

Answer: hydrogen-carbonate.

Explanation:Because when carbon dioxide is passed in excess it leads to a formation of hydrogen-carbonate.

I hope everyone finds this helpful

Answer:

Answer down below

Explanation:

if it has to be 2 of these I think it would be A and B but if it is only one Answer it would be B

Crowding and food quality are two environmental issues of restaurants.

Environmental issues are defined as harmful effects to Earth and its natural systems due to the actions of humans.

The food supply chain and restaurant customer experience generate a lot of waste – from food waste to plastic waste, and more. Unfortunately, one-third of the world's food gets wasted. This waste alone amounts to 8% of the world's greenhouse gas emissions.

Hence, option B is correct.

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Answer:

When hydrogen fuel burns, its atoms combine with oxygen atoms in the air, which creates a chemical reaction that releases energy in the form of heat and light. The hydrogen atoms lose their outermost electrons, becoming positively charged ions (protons). These ions combine with the oxygen atoms to form water molecules (H2O), which evaporate into the air as steam. Therefore, the atoms that make up hydrogen fuel ultimately become part of water molecules during the process of combustion.

Explanation:

Answer:

Force exerted on an object over a distance does work. Work can increase energy, and energy can do work. Power is the rate at which work is done.

Explanation:

Answer:

I think it is B.

Explanation:

The erosion of the sand and soil from the shoreline would be a direct result of humans building along the ocean shore zone. When humans build structures along the shoreline. This can lead to increased erosion of the shoreline and loss of the beach.

Building along the ocean shore zone can have several impacts on the natural environment. One of the direct impacts is the erosion of the sand and soil from the shoreline. This occurs because construction can disrupt the natural processes that maintain the beach, such as the movement of sand and the protection provided by vegetation.

For example, building seawalls or other structures can prevent the natural movement of sand and sediment along the beach. This can lead to erosion of the shoreline, as the sand is no longer able to accumulate in areas where it is needed to protect the shoreline. These plants help to hold the sand in place and protect the beach from erosion.

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Answer:

I would just find a measuring cup and do it that way it's the easiest way

Answer:

0.93L

Explanation:

We'll begin by calculating the number of mole of present 374g of KNO3. This is illustrated below:

Mass of KNO3 = 374g

Molar mass of KNO3 = 39 + 14 + (16x3) = 101g/mol

Number of mole of KNO3 =..?

Mole = Mass /Molar Mass

Number of mole of KNO3 = 374/101 = 3.7 moles

Now, we can calculate the volume of the solution as follow:

Mole of KNO3 = 3.7 moles

Molarity = 4M

Volume =..?

Volume = mole /Molarity

Volume = 3.7/4

Volume = 0.93L

Therefore, the volume of the solution is 0.93L

Answer:

THE VOLUME OF A 4 M SOLUTION THAT CONTAINS 374 g OF KNO3 IS 0.93 L

Explanation:

Number of moles = concentraion * volume

Number of moles can also be written as:

number of moles = mass / molar mass

Calculate the molar mass of KNO3 where (K = 39, N = 14, 0=16)

molar mass of KNO3 = (39 + 14 + 16*3) = 101 g/mol

So therefore:

mass / molar mass = concentration * volume

where;

mass = 374 g

molar mass = 101 g/mol

concentration = 4 M

volume = unknown

Hence,

374 / 101 = 4 * V

V = 374 / 101 * 4

V = 374 / 404

V = 0.9257 dm3

The volume of a 4M solution that contains 364 g of KNO3 is approximately 0.93 L

Answer:

Explanation:

Plants

Animals

Food chain

Plants

Animals

Answer:

A. A mathematical model based on data

A mathematical model based on data and a map that shows wind patterns   would be most useful in predicting weather as it they will provide data with most accuracy.

Accuracy in terms of chemistry can be defined as to how close a measurement is to the true value.There are three types of accuracy:

1) Point accuracy-It means accuracy is present at that point of scale only.It does not give any information about the accuracy of the instrument.

2)Percentage of true value--It is the accuracy  which is determined by identifying accuracy of the instrument  and comparing it with the measured true value.

3)Percentage of scale range- It is the accuracy  which determines accuracy of the measurement.

Accuracy in case of instruments  is neglected up  to ±0.5 percent.

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Explanation:

Rosa eats a peanut butter sandwich for lunch. Peanut butter contains a lot of protein, and bread is mostly starch. Rosa plans to go for a run later this afternoon. Rosa is breathing normally. does she need from the food she ate and the air she breathes so that she can go on her run? (Sentence starter: The molecules Rosa needs from the food she eats and air she breathes are.

this science

Answer:

39

Explanation:

Relative mass does not need to be calculated as it is listed on the periodic table. Potassium's relative atomic mass is around 39.

Answer:

Gravity

Explanation:

Gravity is what causes you to weigh more or less.

What is gravity? Gravity is the force that pulls things together. Larger things with larger masses have more gravity. When you are on Earth, you would weigh more than on the moon, about 6 times more, in fact, because the gravity on Earth is 6 times stronger.

Answer:

B

Explanation: I don't know but its B

Answer:

B

Explanation:

Answer: metal denting

Explanation:

a physical change is something that can be undone. while chemical changes are relatively permanent. You can reshape the metal so you know it is physical.

Answer:

Sodium

(Na)

Just count the electrons and search which atom it is.

Answer:

C) energy cannot be created or destroyed, but it can change forms

Explanation:

all false except for the last one

The phases of matter include liquids, solids, and gases. The last phase of the matter called plasma contains charged particles. Thus, statements 2, 3, and 4 are true, but 1 is false.

The matter is made of particles that are arranged differently to form the various states of matter. The gases, solids, and liquids differ in their physical arrangement and not the chemical that makes them different from each other. Thus, statement 1 is false.

Liquids have no fixed shape but definite volume due to the free particle arrangement. The mass of the water is more than that of the ice as they have high density than a solid substance. Thus, statements 2 and 3 are true.

The other form of matter called plasma is said to carry charges in the form of electrons and ions that make it different from the other states and has a form similar to the gases. Thus, statement 4 is true.

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To prepare 250 mL of a D10/NS solution using D10W and a vial of NaCl 4 mEq/mL, you would need 9.6 mL of NaCl. Normal saline (NS) contains 154 mEq/L of sodium chloride (NaCl). To prepare 250 mL of NS, you would need 250 mL * (154 mEq/L) = 38500 mEq of NaCl. Since the vial of NaCl contains 4 mEq/mL, you would need 38500 mEq / (4 mEq/mL) = 9625 mL = 9.6 mL of NaCl. So the correct answer is b. 9.6ml.

Answer:

B. structure 2

Explanation:

It represents nucleus which is the brain of the cell