Solve whoever gets it right first gets brainlest!

Answer:

um, not sure how to answer this haha

Explanation:

Answer:

the answer is b mitosis in humans

Answer:

Hope this helps

Explanation:

Answer:

C po Hope it helps salamat

Answer:

condensation is the process from which gas changes to liquid

Answer:

B. They Increase the [OH-]

Explanation:

Have a great day! :)

Taking into account the definition of the Arrhenius theory of acids and bases, the correct answer is option B. "Bases increase the concentration of hydroxide ions [OH⁻]"

An Arrhenius acid is defined as chemical substances that contain hydrogen, and that when dissolved in water produce a concentration of hydrogen ions or protons (H⁺), increasing the concentration of H⁺ in the solution.

That is, according to Arrhenius theory, an acid is a substance that dissociates H⁺ ions in aqueous solution.

On the other hand, according to this Theory, a Arrhenius base is any substance that, when dissolved, releases hydroxyl ions (OH⁻).

So, the correct answer is option B. "Bases increase the concentration of hydroxide ions [OH⁻]"

Learn more about Arrhenius Theory:

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Answer:

3.54 mol

Explanation:

When at STP (Pressure of 1 atm & T of 273.16 K), one mol of any given gas occupies 22.4 liters.

With the above information in mind we can calculate the number of moles, using the factor 22.4 L/mol:

79.2 L ÷ 22.4 L/mol = 3.54 mol

There are 3.54 moles of the gas present in the container.

The statement best describes the diagram is the catalyzed reaction passes through C. Therefore, option A is correct.

An energy profile is a theoretical representation of a chemical reaction or process as a single energetic pathway as the reactants are transformed into products in theoretical chemistry.

The amount of relative potential energy in each step of a reaction is depicted by an energy diagram. Reactants, transition states, and products are typically depicted on energy diagrams. It may also include intermediates and activation energy, depending on the reaction.

There are two lines on the energy level diagram. The blue line denotes ground state energy, while the red line denotes excited state energy. The horizontal axis represents orbital energy, and the vertical axis represents total system energy.

Thus, option A is correct.

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Answer:

work = 3.45 Joules

Explanation:

Work from the 1st Law of Thermodynamics is PΔV in the equation of internal energy => ΔE = ΔH + PΔV.

Therefore, work = PΔV = 2.07atm·(2.334L - 0.666L) = 3.45 L·atm = 3.45 Joules

Answer:

3.35 atm

Since P₂ > 3.00 atm, the lighter would explode.

Explanation:

Step 1: Given data

Step 2: Calculate the final pressure of butane gas

If we assume ideal behavior, we can calculate the final pressure of butane gas using Gay Lussac's law.

P₁/T₁ = P₂/T₂

P₂ = P₁ × T₂/T₁

P₂ = 2.50 atm × 393 K/293 K = 3.35 atm

Since P₂ > 3.00 atm, the lighter would explode.

Answer:

True true false true true true flase, false

Explanation:

Answer:

1.14 × 10³ mL

Explanation:

Step 1: Given data

Step 2: Calculate the final volume of the gas

If we assume ideal behavior, we can calculate the final volume of the gas using Boyle's law.

P₁ × V₁ = P₂ × V₂

V₂ = P₁ × V₁/P₂

V₂ = 0.884 atm × 656.0 mL/0.510 atm = 1.14 × 10³ mL

Answer:

Explanation: Okay what do you need help with im sure i can help.

Answer:

A

Explanation:

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Answer:

[KOH] = 0.10M in KOH

Explanation:

Molar Concentration [M] = moles solute/volume solution in liters

moles KOH = 0.56g/56g/mole = 0.01mole

Volume of solution = 100cm³ = 100ml = 0.10 liter

[KOH] = 0.01 mole KOH / 0.10 liter solution = 0.10M in KOH

Answer:

I'm purty sure it's 10% Cause that is what my teach said.

Explanation:

Have a good day fern!!!!

Answer:

A and C

Explanation:

so D

Answer:

here are some ideas <3

Explanation:

burning of paper.

cooking of food

burning of wood

rotting of fruits.

frying egg

rusting of iron

mixing acid and base.

burning of candle

leaves changing color

melting of sugar.

baking

explosion of fireworks.      

souring milk

digestion of food

fermentation

lighting matchstick

photosynthesis

decomposition of waste

Answer:

[tex]pH=11[/tex]

Explanation:

Hello there!

In this case, since the ionization of the described base is:

[tex]base+H_2O\rightarrow OH^-+baseH^+[/tex]

Thus, the equilibrium expression in terms of the reaction extent is:

[tex]Kb=5.86x10^{-6}=\frac{x^2}{0.187-x}[/tex]

Thus, by solving for x we obtain:

[tex]5.86x10^{-6}({0.187-x})=x^2\\\\1.10x10^{-6}-5.86x10^{-6}x-x^2=0[/tex]

So the values of x are:

[tex]x_1=0.0010M\\x_2=-0.0010M[/tex]

So the feasible answer is 0.0010 M, thus we compute the pOH:

[tex]pOH=-log(0.0010M)=3[/tex]

And therefore the pH:

[tex]pH=14-pOH=14-3\\\\pH=11[/tex]

Best regards!

Answer:

12

Explanation:

12

Answer: The answer is actually competition

Explanation:

So she plants the flowers, then ignores them, not taking care of them. So when the weeds start to grow, and if they aren't pulled out, they start to steal the water from the flowers. So the flowers would try to take it back, but the weeds, because Samantha isn't taking care of them and pulling them out, keep growing. This lets the weeds take more water, causing the flowers to die.

Answer:

water

. Of the compounds listed in the question, water has the highest percent mass of hydrogen.

Hope it helps

Answer:

The number of moles of NaCl contained in 0.5000 L of a 1.5 M (Molarity) solution is 0.75 moles.

Explanation:

Molar concentration is a measure of the concentration of a solute in a solution, be it some molecular, ionic, or atomic species.

Molarity M is the number of moles of solute that are dissolved in a given volume.

The Molarity of a solution is determined by the following expression:

[tex]Molarity=\frac{number of moles of solute}{volume}[/tex]

Molarity is expressed in units [tex]\frac{moles}{liter}[/tex].

In this case:

Reemplacing:

[tex]1.5 M=\frac{number of moles of solute}{0.5 L}[/tex]

Solving:

number of moles of solute= 1.5 M* 0.5 L

number of moles of solute= 0.75

The number of moles of NaCl contained in 0.5000 L of a 1.5 M (Molarity) solution is 0.75 moles.

Answer:

1.0 atm

Explanation:

Step 1: Given data

Step 2: Convert the temperatures to the Kelvin scale

We will use the following expression.

K = °C + 273.15

T₁: K = 0°C + 273.15 = 273 K

T₂: K = 44°C + 273.15 = 317 K

Step 3: Calculate the initial pressure of the balloon

We will use the combined gas law.

P₁ × V₁ / T₁ = P₂ × V₂ / T₂

P₁ = P₂ × V₂ × T₁ / T₂ × V₁

P₁ = 0.97 atm × 4.25 L × 273 K / 317 K × 3.45 L = 1.0 atm

Answer:

A structure that can lessen erosion is a plant cover :3

Explanation:

:3

Answer:

molar mass CO = 28.01 g/mol

3.45 x 10^2 x 28.01 =9.66 x 10^3 g

mass Zn = 2.45 x 10^-2 x 65.39 g/mol=1.60 g => 1.60 x 10^0

Explanation:

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One mole of cobalt weighs 58.9 grams. Hence the mass in grams of 345 moles of cobalt is 20320.5 g.

Cobalt is 27th element in periodic table. It is place in d- block of periodic table and is termed as transition metal. Transition metals sows variable oxidation states.

The atomic number of cobalt is 27. Thus, it contains 27 protons and 27 electrons. The mass number is 57. The mass of a given number of moles of an element can be calculated by multiplying its atomic mass by number of moles.

The atomic mass of cobalt = 58.9 g/mol

The mass of one mole of cobalt is 58.9 g/mol.

Thus, the mass of 345 moles of cobalt is calculated as follows:

mass of 345 moles of Co = 345 mol × 58.9 g/mol = 20320 g.

Therefore, the mass of cobalt in 345 moles is 20320 grams.

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Answer: .768

Explanation:

I didn’t get this one right but that’s the answer.