What are the non-living things that make up an ecosystem?

Answer:

whats the question?

Explanation:

Explanation:

Refer to the attachment

Extrashots:-

C4H8N2O3 is called asparagine .

The term that most likely describes what the scientist is measuring is partial pressure.

Partial pressure is the pressure that a single gas in a mixture of gases would exert if it occupied the same volume as the entire mixture.

The total pressure of a gas mixture is equal to the sum of the partial pressures of each individual gas in the mixture. This is known as Dalton's law of partial pressures.

Therefore, by measuring the partial pressure of carbon dioxide, oxygen, and nitrogen, the scientist can determine the contribution of each gas to the total atmospheric pressure.

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Answer:

True, it undergoes a physical change.

Explanation:

A physical change is a change that does not change the chemical makeup of a material. This includes altering its shape.

Answer:

Explanation:

The value you measured on the scale in ounces = X

28.3 grames = 1oz

1/4of grames= 1/28.3 *1/4

                You have to compare as below;

 if you want to convert the measured scale to grames ; multiply by 28.3

if you want to convert measured to oz ; you have to (1/28.3 *1/4) *X/4

The first step we have to follow to answer this question is to convert the mass of Fe2O3 to moles using its molecular mass:

According to its formula, each kmol of Fe2O3 contains 2 kmol of Fe. Use this information to find the amount of moles of iron:

Use the molecular mass of iron to find the mass of iron that can be recovered from the Fe2O3:

It means that 446.76kg of iron can be recovered.

Answer:

Option E. 12.04

Explanation:

We begin by calculating the hydrogen ion concentration, [H+] in the solution. This can be obtained as follow:

HI will dissociate in solution as follow:

HI (aq) —> H+(aq) + I-(aq)

From the above equation,

1 mole of HI produced 1 mole of H+.

Therefore, 0.011 M HI solution will also produce 0.011 M H+ solution.

Therefore, the hydrogen ion concentration, [H+] in the solution is 0.011 M

Next, we shall determine the pH of the solution. This can be obtained as follow:

Hydrogen ion concentration, [H+] = 0.011 M

pH =?

pH = – Log [H+]

pH = – Log 0.011

pH = 1.96

Finally, we shall determine the pOH of the solution as follow:

pH = 1.96

pOH =?

pH + pOH = 14

1.96 + pOH = 14

Collect like terms

pOH = 14 – 1.96

pOH = 12.04

Therefore, the pOH of the solution is 12.04

Answer:

1g/mL is the correct answer

The molarity of the lead(II) nitrate solution if 22.00 mL of 2.00 M potassium iodide is needed to reach the equivalence point with 18.00 mL of lead (II) nitrate is 1.2M.

The molarity of a solution can be calculated using the following formula:

CaVa/CbVb = na/nb

Where;

The balanced equation of the reaction is as follows:

Pb(NO3)2 (aq) + 2KI (aq) → 2KNO3 (aq) + PbI2 (s)

22 × 2/18 × Cb = 2/1

44/18Cb = 2

Cb = 44 ÷ 36

Cb = 1.2M

Therefore, the molarity of the lead(II) nitrate solution if 22.00 mL of 2.00 M potassium iodide is needed to reach the equivalence point with 18.00 mL of lead (II) nitrate is 1.2M.

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Answer:

Calculate the volume (in mL) of the 1.356 M stock NaOH solution needed to prepare 250.0 mL ... Glucose (molar mass=180.16 g/mol) is a simple, soluble sugar ... g of glucose in enough water to make 500.0 mL of solution. • Step 2: Transfer 18.6 mL of the glucose

Explanation:

Answer:

1.123x10⁻⁴ moles of alanine

Explanation:

In order to convert grams of alanine into moles, we need to know its molecular weight:

The formula for alanine is C₃H₇NO₂, meaning its molecular weight would be:

Then we divide the sample mass by the molecular weight, to do the conversion:

Answer:

26.66kg

Explanation:

If a person has a mass of 80kg, then they will weigh 80kg x 9.8m/s^2 or 784 Newtons on the Earth. That same person would weigh 80kg x 9.8m/s^2/3 or 261.33 Newtons on Mars, which the person might think was 26.66 Kg (although he would be incorrect since his mass has not changed).

Answer: There are 0.523 moles of Titanium in \(3.15\times 10^{23}\) atoms of Titanium

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number \(6.023\times 10^{23}\) of particles.

To calculate the moles, we use the equation:

\(\text{Number of moles}=\frac{\text{Given atoms}}{\text {avogadro's number}}\)

\(\text{Number of moles of Titanium}=\frac{3.15\times 10^{23}}{6.023\times 10^{23}}=0.523moles\)

The rate constant of the second-order reaction is 0.111 M^-1 min^-1.

The given data represents a second-order reaction where the rate of the reaction is proportional to the square of the concentration of A.

The integrated form of the second-order reaction is:

1/[A]t = kt + 1/[A]0

where [A]t and [A]0 are the concentrations of reactant A at time t and time zero, respectively, k is the rate constant.

We can use the given information to calculate the rate constant (k) of the reaction for the given half-life (t1/2) of 3.15 minutes:

t1/2 = (1 / k[A]0)

Using the percentage decrease in concentration and the given initial concentration, we can calculate the concentration of A at time t:

[A]t = [A]0 - 0.30[A]0 = 0.57126 M

Substituting the given values, we get:

3.15 min = (1 / k)(0.0818 M) / (0.0818 M - 0.57126 M)

Simplifying the equation above, we can solve for k:

k = 0.111 M^-1 min^-1

Therefore, the rate constant of the second-order reaction is 0.111 M^-1 min^-1.

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Pls find my answer bellow

Answer:

3?

Explanation:

it states 3 elements names so im assuming thats it and not including the element symbols

Answer: its 4xb236.52

Explanation:

The enthalpy of the reaction is then obtained as 71.5 kJ/mol.

We know that the enthalpy of the reaction has to do with the amount of heat that is absorbed or lost in the reaction. In this case, we can see that our task is to obtain the enthalpy of the dissolution reaction.

Number of moles of the calcium chloride =  37.73 g/110.98 g/mol

= 0.34 moles

Mass of the water = 240.00 g

Heat gained by the water = mcdT

m = mass of the water

c = heat capacity of  the water

dT = Temperature change

Then;

H = 240.00 *  4.18 * 24.25

H = 24.3 kJ

Enthalpy of the reaction = -( 24.3 kJ)/0.34 moles

= 71.5 kJ/mol

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Answer:

7.62

Explanation:

Given that :

pH = 7.8

Conjugate base in solution = 0.6 M

Weak Acid in solution = 0.4 M

Recall :

pH = pKa + log(conjugate base / acid)

Hence,

PKa = pH - log(conjugate base / acid)

pKa = 7.8 - log(0.6 / 0.4)

pKa = 7.8 - log(1.5)

pKa = 7.8 - 0.1760912

pKa = 7.6239088

Hence, pKa = 7.62 (2 decimal places)

Answer:

Explanation:

When potassium chloride reacts with lead acetate in aqueous medium, it gives white precipitate of lead chloride and potassium acetate in aqueous medium as a product.

As shown in chemical reaction given below:

The balanced chemical equation is Hg₂(C₂H₃O₂)₂ + 2KCl → Hg₂Cl₂ + 2KC₂H₃O₂

The equation in which the number of atoms of all the molecules is equal on both sides of the equation is known as a balanced chemical equation.

for example the chemical formula of salt is is NaCl. That would be considered balanced, because the amount of sodium and the amount of chlorine is the same

In the given reaction :

Hg₂(C₂H₃O₂)₂(aq)  + KI(aq)   →   Hg₂I₂(s)  +  KC₂H₃O₂(aq)

there must be two acetates  in product side  so first balance acetates

Hg₂(C₂H₃O₂)₂(aq)  + KI(aq)   →   Hg₂I₂(s)  +  2KC₂H₃O₂(aq)

two potassium and two iodines  must present reactant side  so add  2  before  KI  we get balanced reaction

Hg₂(C₂H₃O₂)₂ + 2KCl → Hg₂Cl₂ + 2KC₂H₃O₂

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According to the research, the correct answer is Option 2. If the cell were only permeable to potassium ions there would be a slight change in membrane potential to a more negative value as potassium exits the cell.

It refers to the potential difference on either side of the membrane of a resting cell, that is, already repolarized where the channels are much more permeable to potassium than to sodium.

In this sense, it is determined by the ion concentration and membrane permeability where the inside of the cell has a more negative charge (potassium ions) relative to the outside (sodium ions).

Therefore, we can conclude that resting membrane potential causes the cell membrane inside to become negative because it has sodium ions towards the outside of the cell and potassium ions towards the inside, thus the correct answer is Option 2.

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Answer:

NaHCO3

Explanation:

The three is small at the bottom at the end

The mass percentage is an important method to determine the concentration of a solution. Here among P₂O₃ and P₂O₅, the oxide P₂O₃ contains higher percentage of phosphorous.

The mass percentage of a component can be defined as the ratio of the mass of that particular component in the compound to the total mass of the compound. It can be expressed as:

Mass percentage = Mass of the component / Total mass of the component × 100

Molar mass of P₂O₃ = 110 g/mol

Molar mass of P₂O₅ = 142 g/mol

a. % of 'P' in P₂O₃ = 2 × 31 / 110 × 100 = 56.4 %

   % of 'P' in P₂O₅ = 2 × 31 / 142 × 100 = 43.66 %

Thus P₂O₃ has higher percentage of 'P'.

b. 1 mol O₂ × 4 P /3 O₂ × 31.0 P / 1 mol P = 41.3 g P

c. P₄O₁₀

d. Aluminium oxide - Al₂O₃

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Statement that shows that the total energy of a system remains constant and is conserved would confirm the law of conservation of energy.

What is law of conservation?

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another. Therefore, any statement that shows that the total energy of a system remains constant and is conserved would confirm the law of conservation of energy.

Here are some examples of statements that confirm the law of conservation of energy:

All of these statements confirm the law of conservation of energy by showing that the total energy of a system is conserved over time.

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Complete question is: "The total energy of a system remains constant and is conserved" statement would confirm the law of conservation of energy.

Answer:

linear electron and molecular geometry with a bond angle of 180 degrees and a hybridization of Sp

Explanation:

The equilibrium pressure of the nitrogen oxide is given as 4 atm.

Kp is the equilibrium constant for a chemical reaction in terms of partial pressures. It is defined as the ratio of the product of the partial pressures of the products raised to their stoichiometric coefficients to the product of the partial pressures of the reactants raised to their stoichiometric coefficients

We know that;

Kp = \(pNO_{2} ^2/pN_{2} ^2 . pO_{2}\)

\(3.2 * 10^-28 = (2x)^2/(3.21 - 2x) (6.21 - x)\\3.2 * 10^-28 = 4x^2/19.9 - 3.21x - 12.42x + 2x^2\\3.2 * 10^-28(19.9 - 15.63x + 2x^2) = 4x^2\\6.4 * 10^-27 - 5 * 10^-27 x + 6.4 * 10^-28x^2 = 4x^2\\x = 4 atm\)

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1 troy ounce is equal to 0.0685714 pound.

1 pound is equal to 14.5833 troy ounces.

14.5833 x 1795 = 26177.0235

1 pound of gold is approximately $26177.03

Hopefully that helped! :)

The intended victim should be empowered to protect themselves against violent crime by developing a fear of the consequences in the potential perpetrator.

Victim is a person who has been wronged or harmed by another person, group, or entity. Victims can experience physical, emotional, psychological, and financial harm due to the actions of another person or group. Victims of crime, abuse, or other types of harm may suffer from physical wounds, emotional trauma, financial losses, or all three. Victimization can be intentional or unintentional, but the effect on the victim is often the same. Victims may experience fear, powerlessness, helplessness, anger, and other emotions as a result of their experience. Victims may also experience social stigma, which can lead to difficulties in finding employment, housing, and other essential services.

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" Volume is the amount of space occupied by a substance, while mass is the amount of matter it contains." -What Is the Definition of Volume in Science? - ThoughtCo

Answer:

Mg S2 O3

Explanation:

.691 g of Mg  is .284 mole

1.84 g of S    is .5739 mole

1.365 g of O is  .8531 mole      you can see the ratio is ~  1 :2 :3

                                                        Mg S2 O3