How does the structure of the steroid EXPLAIN the function of the steroid?

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: The first plastic based on a synthetic polymer was invented in 1907.  Plastic sticks around in the environment for ages, threatening wildlife and spreading toxins.

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:

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

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:

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:

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:

the answer is b mitosis in humans

Answer:

B

Explanation:

the group number is=valence electrons. element 1 is in group 1 element 18 is in group 8. 1<8

Answer:

the answer is b

Explanation:

i just know

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:

True true false true true true flase, false

Explanation:

Answer:

it's b.

Explanation:

thank u so much for this. i appreciate it. lol.

Answer:

12

Explanation:

12

Answer:

C po Hope it helps salamat

Answer:

it decreases

Explanation:

because its false

Answer:

True

Explanation:

The pressure will increase because the heat will make the molecules move around and spread out more.

If you want I could go into more detail with the explanation.

Answer:

Explanation:

From the information given:

We can say that the rate of reaction is utilized to decide the reaction speed, and it is subject to the rate constant.

The power of concentration related to the rate equation can be said to be the order of the reaction.

For zero-order reaction: it is the reaction whose rate is free and not dependent on the reactant's concentration.  

Concentration-time reaction is given as;

[tex]\mathbf{[A] = [A_o] -kt ---- (1)}[/tex]

where;

t = time

k = rate constant

A_o = initial concentration of reactant

Thus, the plot between [A] and t needs to be a straight line.

On the other hand, The First order reaction is the reaction whose rate is straightforwardly corresponding to the reactant's concentration.  

Its concentration-time relation can be expressed as,

[tex]\mathbf{In([A])= In ([A_o])-kt ---- (2)}[/tex]

t = time

k = rate constant

[A_o] = initial concentration of the reactant

Then, the plot between [A] & t requires to be a straight line.

Presently, the plot between ln([A]) vs time appears to be in a straight line with the slope of the line equivalents to the rate constant (k).

hence,

slope = -k

Then;

[tex]\mathbf{k = -slope ---- (3)}[/tex]

Now; to discover the activation energy we need to utilize Arrhenius relation which is given as,

[tex]\mathbf{In(k) = In(K_o) - \dfrac{E_o}{RT} ---- (4)}[/tex]

From the above equation;

k_o = arrhenius parameter

Ea = activation energy

R = 8.314 J/mol.K

T = temperature in Kelvin

From the data given  for concentration vs time;

t[min]      Ca(mol/L)

0                      2

5                     1.6

9                     1.35

15                   1.1

22                    0.87

30                    0.7

40                    0.53

60                    0.35

a)

Since we can deduce the order of the reaction,

Let's assume that it is a zero-order reaction, Thus, the plot of Ca vs t can be seen in the first image attached below;

From the diagram, it is clear and obvious that it is NOT a straight line.

Thus, we conclude that this order is NOT a zero-order.

However, let also assume that order is first order,

Now, from the second diagram showing the plot of ln(Ca) vs t, we can deduce that it is a straight line which implies that it is the order of the reaction is first order.

Therefore, the equation for the first order is given as;

[tex]\mathbf{In([A]) = In ([A_o])- kt}[/tex]

Recall that: the slope of the ln(A) v/s time will result in a rate constant,

Thus, from the graph we have;

slope = -0.0289 mol/L.min and:

slope = - k

Hence;

rate constant = k = 0.0289 mol/L.min and the order = 1st order

b)

On the off chance that we need to take more data points, we will like to take the data point in the scope of 40 min to 60 min time interval, on the grounds that the significant deviation is seen there. more information focuses will imply more accuracy.

Answer:

the answer is d

Explanation:

top right corner

☁️ Answer ☁️

annyeonghaseyo!

Your answer is:

it can bond with oxygen to form rust or iron oxide. and it can bond with carbon to form steel.

Here's another one: Iron bonds with lots of things: Oxygen (Ferric Oxide = rust),Chlorine (Ferric Chloride]), Fluorine, ... , even other Iron (in aMetallic Bond or crystal).

Hope it helps.

Have a nice day hyung/noona!~ ￣▽￣❤️

Answer:

B: Jason's experiment

Explanation:

I did the Unit test review

Answer:

Hope this helps

Explanation:

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:

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:

W=ma

=0.7×9.8

=6.86N

....................

PLEASE GIVE BRAINLIEST

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:

1 mol. = 0.169 mol He.

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:

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

Explanation:

Have a good day fern!!!!

Answer:

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

Explanation:

:3