Jim ran 200 meters in 30.4 seconds. Mac ran 100 meters in 30.4 seconds. Who ran faster?

Jim, because his distance divided by time is less
Jim, because he ran a greater distance in the same time
Mac, because he ran the same distance in fewer seconds
Mac, because his rate of change of distance over time was constant

Answer: Hello: ) ✨ It depends on the concentration of all solutes in the solution (ie, its osmolarity). A solution with low osmolarity is hypotonic and vice versa. Solutions having the same osmolarity are isotonic. Water in pools and rivers is hypotonic compared with sea water, but water from the Dead Sea is hypertonic.We do not swell and pop when we go swimming in a hypotonic swimming pool because our skin protects us from the external environment and does not let water cross into or out of our body surfaces. ... hope this helps have a great dayAssuming the water is warm enough that you don’t simply die of hypothermia, the next problem would be your skin. For reasons that still aren’t well understood, human skin starts to break down after continuous immersion in water of a few days. You’d suffer open sores and be liable to fungal and bacterial infections just from the spores on your skin, even if the water itself was perfectly sterile. The pressure of the water also reduces the circulation to your extremities and makes breathing more difficult.

Explanation:

A relative term, hypotonicity defines a solution's characteristic in relation to another solution.

The cytosolic fluid or the fluid found inside a cell is frequently used as the comparison solution in biology. Therefore, a solution would be considered hypotonic in biology if it contained fewer solutes than the cytosol of a cell. The semipermeable membrane is the cell membrane. What then occurs to a cell in a hypotonic environment.

Tonicity has the prefix "hyper," which denotes "more" or "excess." Consequently, a solution that contains more non-penetrating solutes than the other solution can pass through a semipermeable barrier.

Therefore, A relative term, hypotonicity defines a solution's characteristic in relation to another solution.

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Answer:

High coefficient of expansion

Explanation:

It is only mercury that is in liquid form at room temperature. It works on the principle of thermal expansion, it expands when heated and contracts when cooled. The very minute change can be notable by the use of mercury in the thermometer. So this property of the thermometer makes it suitable for measuring temperatures.

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:

the answer is a hope this hep;slms

Explanation:

betuase im write

Answer:

If I were to be a scientist, I'd be a botanist. A botanist is a scientist who studies plants. For example, they study many different aspects like their genetic, physical structure, and the distribution. They also study the relationship between plants and their different environments.

I would choose to be a botanist, because they help save our plants which are very important. They also help with telling others what exactly causes pollution and possible ways to stop it. Botanist also help with providing human resources like food. Without botanist, we would have a lot less of resources that we use in everyday life.

I can see my life as a botanist in many different ways. I might be put in the chemical based section or I might be put in the analysis of plants. Overall if I were to see myself as any kind of scientist, It would have to be a botanist.

Explanation:

Hope it helps, feel free edit whatever you'd like too

Answer:

403 mmHg

Hope this helped!

Answer:

True

Explanation:

Viscosity is a measure of resistance to liquid flow. Thus, a higher value means it has more resistance and thus flows more slowly.

the answer to this question is 'true'. the sentence is true

Answer:

i dont know

Explanation:

I'm sorry i needed points for my own question! I only had 8:( sorry

Answer:

a mixture of sand, silt, clay and broken down organic matter, called humus.

Explanation:

the topsoil layer

Answer:

b

Explanation:

i hope this helps, wish u luck

Answer: D or only 2 correctly describe the importance of soil

Explanation: Don't know what to put here.

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: A

Explanation:

A small amount of solute is dissolved in a larger amount of solvent a solid is stirred into a liquid and dissolves so

The enthalpy of formation of the solid Al2O3(s) is -1675.6 kJ/mol .

Using the relation;

ΔH°rxn =  ∑ΔH°fproducts  - ∑ΔH°freactants

We know that;

ΔH°f H2O(l)  = -285.8 kJ/mol

ΔH°fAl(OH)3(s) = -1315 kJ/mol

ΔH°fAl2O3(s) = ?

Substituting values;

21.0kJ/mol =[ (ΔH°fAl2O3(s) ) + 3( -285.8 kJ/mol)] - 2 ( −1277kJ/mol)

21.0kJ/mol = (ΔH°fAl2O3(s) ) + 1696.6  kJ/mol

ΔH°fAl2O3(s) = 21.0kJ/mol - 1696.6  kJ/mol

ΔH°fAl2O3(s) = -1675.6 kJ/mol

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Answer:

electrons or protons

Explanation:

This statement only applies to neutral atoms where the number of protons and electrons is equal

Answer:

A.

Explanation:

Adjust = Adapt if that makes sense.

Answer:

elements in the elements now are different end of story

Answer:

A

Explanation:

Because when atom combine in a bond they form molecules

Hydrogen atom +Hydrogen atom =Hydrogen molecule

H+H====== H₂

Make me brainliest

Answer: PUMPKIN

Explanation:

Answer:

This is where google becomes your best friend but I got you

Explanation:

1.  A theory used to predict the rates of chemical reactions, particularly for gases. The collision theory is based on the assumption that for a reaction to occur it is necessary for the reacting species (atoms or molecules) to come together or collide with one another.

2. Collision theory says that chemical reactions occur by the collisions between atoms and molecules, so the more collisions the faster the rate of the chemical reactions.

3. The speed at which a chemical reaction proceeds. It is often expressed in terms of either the concentration (amount per unit volume) of a product that is formed in a unit of time or the concentration of a reactant that is consumed in a unit of time.

4. There are four main factors that can affect the reaction rate of a chemical reaction:

Reactant concentration. Increasing the concentration of one or more reactants will often increase the rate of reaction. ...

Physical state of the reactants and surface area. ...

Temperature. ...

Presence of a catalyst.

Answer:

1. a theory that says a chemical reaction takes place when particles of the reactants collide with sufficient energy to initiate the reaction

2. Increasing the concentration of the reactants, the faster the particles will collide so the reaction rate will be faster

3. a measure of how fast a reaction takes place

4. Temperature, presence of a catalyst, reactant concentration, surface area

5.

Explanation:

not sure how to do number 5 sorru

Answer:

Option (D) A Generator

Explanation:

A generator is an equipment that has to do with the production of electricity by the use of electromagnetic induction. The generator has split rings that make contact with the exterior.

Learn what is a Generators here

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Answer:

The overall temperature of the coffee would decrease because the coffee would transfer its thermal energy into the surrounding air. The molecules would slow down in movement because when the coffee was hot, they were moving around faster. Subsequently, the kinetic energy of those molecules would also decrease

Explanation:

Answer:

the temperature would become cooler

Explanation:

Answer:

Explanation:

i cant see the attachment

Answer:  A and B

Explanation:

Answer:

A & B

Explanation: