What’s the position of point X?

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:

C po Hope it helps salamat

The atomic masses of C and O are 12 g/mol and 16 g/mol respectively.

The molar mass of CO is 12+16=28 g/mol.

56 g CO corresponds to

28

56

=2 moles.

As per balanced chemical equation, 1 mole of Fe

2

O

3

will react with 3 moles of CO.

Hence, 3.0 moles of Fe

2

O

3

will react with 3.0×3=9 moles of CO.

However only 2 moles of CO are present. Hence, CO is the limiting reagent and Fe

2

O

3

is excess reagent.

As per the balanced chemical equation, 3 moles of CO produces 2 moles of Fe.

Hence, 2 moles of CO will produce 2×

3

2

=12 g

Answer:

12

Explanation:

12

Answer: .768

Explanation:

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

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.

To learn more about an energy diagram, follow the link;

https://brainly.com/question/15751837

#SPJ2

Answer:

n = 1.7 moles

Explanation:

Given mass, m = 23.8 grams

Molar mass of Nitrogen = 14 g/mol

Let there is n number of moles. We know that,

No. of moles = given mass/ molar mass

[tex]n=\dfrac{23.8}{14}\\\\n=1.7[/tex]

So, there are 1.7 moles in 23.8 grams of Nitrogen.

Answer:

the answer is b mitosis in humans

Answer:

[tex]3.5 mol K^+[/tex]

Explanation:

Hello there!

In this case, since the mole-mole rations consider the amount of the specific ion in the whole compound, we can evidence that the potassium sulfate has two potassium ions in the molecule; in other words, there is a 1:2 mole ratio of the former to the latter; in such a way, we can perform the following proportional factor:

[tex]1.75molK_2SO_4*\frac{2molK^+}{1molK_2SO_4}[/tex]

So we cancel out moles of potassium sulfate to obtain:

[tex]3.5 mol K^+[/tex]

Best regards!

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:

Hope this helps

Explanation:

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:

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

Explanation:

:3

Answer:

True true false true true true flase, false

Explanation:

Answer:

prophase

During prophase, the complex of DNA and proteins contained in the nucleus, known as chromatin, condenses. The chromatin coils and becomes increasingly compact, resulting in the formation of visible chromosomes.

Answer:

prophase I

Explanation:

Answer:

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

Answer:

A

Explanation:

....................'''..

Answer:

B: Jason's experiment

Explanation:

I did the Unit test review

Answer:

Usually small spot of color (as on the wing of a butterfly) that resembles an eye.

a light-sensitive pigmented spot on the bodies of invertebrates such as flatworms, starfishes, and microscopic crustaceans, and also in some unicellular organisms.

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:

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.

Answer:

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

Explanation:

Have a good day fern!!!!

Answer:

Hope this helps!!

Explanation:

Molecules of a gas move randomly. In a sealed container they exert a force when they collide with the container walls and this applies a pressure to the container. If the cylinders heat up enough, their pressure will increase and they will explode.

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:

mark me as brainlest

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.

To find more on cobalt, refer here:

https://brainly.com/question/1549014

#SPJ2

Answer:

um, not sure how to answer this haha

Explanation:

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:

false.

Explanation:

black overlays any color.