Given the [H+] = 3.89x10^-7M, what is the pOH?

Answer:

water

Explanation:

Answer:

this makes no sense you arent gonna get help

Explanation:

Answer:

Amplitude

Explanation:

Im taking this test rn lol

Answer:

String a piece of twine between the cups. Use a long piece of string to help the sound travel farther. Tie a knot in the end of the string to keep it in the cup. Decorate the cups if desired. One person can hold the phone up to their ear and the other person can talk into the other cup. Keep the string tight or the sound waves won’t travel.

Explanation:

Answer:

Because organism is made up of organs

organs are made up of tissues

tissues are made up of cells

Therefore interaction of cells give outcome to tissue which further show's results in organs and to organ system and then to the body as a whole

Explanation:

Answer:

Alex forgot to get a flu shot and missed two weeks of school

Answer:

Scientists were unsure about the last common ancestor between apes and humans because fossils are so scarce, researchers do not know what the last common ancestors of living apes and humans looked like or where they originated.

Explanation:

Answer:

61 degrees

Explanation:

Explanation:

[tex]workdone = force \times distance \\ W = (2.6 \times {10}^{ - 4} ) \times (3.7 \times {10}^{ - 3} ) \\ W = 9.62 \times {10}^{ - 7} \: joules[/tex]

The formula W = Fd, where W is the amount of work done, F is the force, and d is the distance, is used to determine how much work is done on a particle when it is pushed by a force. The force and distance in this issue are 2.6 10-4 newtons and 3.7 10-3 metres, respectively.

We add the force and distance together to determine the work done: 9.62 10-7 newton-meters are equal to W = 2.6 10-4 newtons x 3.7 10-3 metres. The response must be presented using the appropriate scientific notation and significant numbers.

The solution should include three significant figures, just like the numbers in the problem, which have three. Therefore, 9.62 10-7 newton-meters is the correct answer.

This response uses appropriate scientific language.notation because the exponent is a negative power of 10 and the coefficient ranges from 1 to 10. In conclusion, the particle underwent work from the force of 9.62 10-7 newton-meters. This response uses the appropriate scientific notation and the correct number of significant digits.

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Explanation:

[tex]from \: hookes \: law \\ F = k.e \\ but \: e = 0.6 \: cm \\ 2 = k \times 0.6 \\ k = 3.33 \\ when \:F \: is \: 2.5 \\ 2.5 = 3.33 \times e {}^{.} \\ {e}^{. } = 0.75 \: cm \\ new \: length = 35 - {e}^{.} \\ = 35 - 0.75 \\ = 34.25 \: cm[/tex]

Answer:

Coal puts out more Co2 emissions than Oil or Gas and Nuclear energy plants don't put out any pollution.

Explanation:

Even though Coal is your answer it is actually a very clean form of generating energy. Not only is it very clean but it is the most effecient means. Solar and Wind power can't even come close to the production and turnover that Coal, Gas, and Oil can. Wind Turbines are so innefficent that they somtimes don't even pay off what it took to build them in thier lifetime of service. The production of Wind Turbines puts out more pollution than any of the Coal or Natural Gas Plants. Solar power is not very efficent either but it is on it's way. It is also very expensive.

Answer:

Synthetic polymers are human-made polymers, and they are commonly found in a variety of consumer products. Various main chains and side chains are used to make different synthetic organic polymers.

Answer:

Explanation:

#cArryonLeArning

Answer:

1

Explanation:

The redox reaction that occurs during the operation of a battery is best describes as non-spontaneous and occurring in a chemical (voltaic) cell.

Redox reactions are those reactions in which oxidation or reduction reaction occurs. In these reactions, losing of an electron occur.

An example is formation of hydrogen fluoride.

Thus, the correct option is (1) non-spontaneous and occurring in a chemical (voltaic) cell.

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Answer:

oK so pay pattention to the fractions

Explanation:

Answer:

impermeable

Explanation:

Answer:

aquifer?

Explanation:

Answer:

[H₃O⁺] ≈ 0.00282 M

General Formulas and Concepts:

Acid/Base Equilibria

Bronsted Acid/Bronsted Base

pH Formula: pH = -log[H₃O⁺]

[H₃O⁺] Formula: [tex]\displaystyle [H_3O^+] = 10^{-pH}[/tex]

Explanation:

Step 1: Define

pH = 2.55 (Acidic)

Step 2: Solve

Step 3: Check

Follow sig fig rules and round. We are given 3 sig figs.

0.002818 M ≈ 0.00282 M

Answer:

4 M

Explanation:

Molarity refers to the molar concentration of a substance (solution). It can be calculated by using the formula below:

Molarity (M) = number of moles (n) ÷ volume (V)

According to the information provided in this question;

V = 0.4 liter

n = 1.6 moles

Molarity = n/V

Molarity = 1.6/0.4

Molarity = 4 M

Answer:

only god knows the answer

The Gibbs free energy is given by the change in enthalpy, temperature, and change in entropy. The standard change in Gibbs free energy for oxidation of iron is –1484.6 kJ.

Gibbs free energy is the energy present in a thermodynamic system that is used by the reactant to form a product. It is given as,

Δ G° = Δ H° -T ΔS°

The oxidation reaction of iron is given as,

4Fe(s) + 3O₂(g) → 2Fe₂O₃(s)

Given,

ΔS° = –549.73 J∙K⁻¹

T = 298 K

Δ H° = –824.2 kJ∙mol⁻¹

Substituting values above the Gibbs free energy is calculated as:

Δ G° = Δ H° -T ΔS°

= –824.2 kJ∙mol⁻¹ -  298 K ( –549.73 J∙K⁻¹)

= -1484580.46 J

The units of joules are converted into kilojoules and the standard change in Gibbs free energy will be –1484.6 kJ.

Therefore, –1484.6 kJ is the Gibbs free energy.

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Answer:

[tex]P_2=7.09atm[/tex]

Explanation:

Hello!

In this case, given the change in volume and pressure of the gas, it is possible for us to recall the Boyle's law as way to understand the inversely proportional relationship between pressure and volume:

[tex]P_1V_1=P_2V_2[/tex]

Thus, when solving for the final pressure, P2, given the initial pressure and volume and the final volume, we obtain:

[tex]P_2=\frac{P_1V_1}{V_2}\\\\P_2=\frac{2.27atm*2.50L}{0.80L}\\\\P_2=7.09atm[/tex]

Best regards!

Answer:

7.1 atm

Using Boyle’s law, P1 V1=P2 V2.

Answer:

F

Explanation:

Answer:

Explanation:

The electronic configuration of a lithium atom is 2.1 and that of a fluorine atom is 2.7

an atom of lithium donates an electron to an atom of fluorine to form an ionic compound. The transfer of the electron gives the lithium ion a net charge of +1, and the fluorine ion a net charge of -1.

Answer:

18

Explanation:

Element   Symbol   no of Atoms

Copper           Cu                3

Sulfur            S                3

Oxygen           O                  12

                                              18 = total

To see the number of atoms of an element in a given molecule we need to multiply stoichiometry to the number that is written on the foot of the element that is stoichiometry. Therefore, there are total 18 electrons in the given compound.

Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit.

In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge. Neutron is neutral that is it has no charge. So overall the charge of nucleus is due to only proton, not by neutron.

Element     Symbol               no of Atoms

Copper           Cu                      3

Sulfur                S                      3

Oxygen            O                      12

S, there are total 18 electrons in the given compound.

Therefore, there are total 18 electrons in the given compound.

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Answer:

A spectator ion is an ion that does not participate in a chemical reaction and is found in a solution before and after a reaction.

Hope this helped :)