I will give an brainlist and a lot of points of who ever does this correctly.

A catalyst can cause a reaction to occur that does not normally happen at room temperature by reducing the activation energy needed to undergo the reaction.

Catalysts are substances, often enzymes, used to speed up or commence a chemical reaction. They do this by reducing the necessary energy amount needed to begin the reaction, known as activation energy, or simply by changing the way in which the reaction takes place, which can allow for a reaction to take place even at room temperature when it would otherwise not occur.  

Therefore, we can confirm that a catalyst can cause a reaction to occur that does not normally happen at room temperature by reducing the activation energy needed to undergo the reaction.

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Answer:

I don't know that anwser sorry

Answer:

Water is a solvent.

Explanation:

What is solvent? Solvent is substance, ordinarily a liquid, in which other materials dissolve to form a solution.

Answer:

A. A thunderstorm can form.

Explanation:

When it meets warmer air a cold front forms and clouds will appear as the warm air rises and then cools. This may lead to heavy rain along the cold front.

Answer:

trees

Explanation:

Answer:

Measure its mass

Measure its volume

Measure its number of moles

Explanation:

An isotope of copper, on bombardment with protons, undergoes a nuclear reaction yielding element X as shown below. The group number of element X is: 2963Cu+11H 601n+α+211H+X.

A mixture of calcium acetate and sodium phosphate would produce [tex]Ca_3(PO_4)_2[/tex] as a precipitate.

Precipitates are insoluble salt formed from the reaction of two soluble salts.

The equation of the reaction between calcium acetate and sodium phosphate is represented by the equation below:

[tex]3Ca(C_2H_3O_2)_2 + 2Na_3PO_4 --- > Ca_3(PO_4)_2 + 6NaC_2H_3O_2[/tex]

The [tex]Ca_3(PO_4)_2[/tex] produced in the reaction is an insoluble salt and, hence, a precipitate.

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Answer:

Moles= 11/44 = 0.25 molesof CO2. Click to see full answer Considering this, how many moles of carbon are in 1 mole of co2? A mole of CO2molecules (we usually just say “a mole of CO2”) has one moleof carbonatoms and two molesof oxygen atoms.

Exxplanation:

Answer:

from food ,cells grow ,tissue gro,organs grow body systems grow.......

From the  reaction equation,  Cu is oxidized in the reaction while Ag is reduced.

The term redox reaction has to do with a reaction in which a specie is oxidized and another is reduced.

Here the reaction equation is; Cu(s) + 2AgNO3(aq) → Cu(NO3)2(aq) 2Ag(s) Cu. We can see that Cu is oxidized in the reaction while Ag is reduced.

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Answer:

this is your sign to take a small break and go drink some water

Explanation:

edge 2022

Answer:

In conduction, heat transfer takes place between objects by direct contact. In convection, the heat transfer takes within the fluid. In radiation, heat transfer occurs through electromagnetic waves without involving particles. The heat transfer takes place due to the difference in temperature.

Answer:

the b is the y-intercept of the line :D

Answer:

Explanation:

It's not 1:1 as the ratio implies

There's a 6 in front of the NaBr

There's a 3 in front of the Na2S  

Arguement

The ratio is (6 NaBr // 3 Na2S}  

Answer

The ratio is {2 NaBr:: 1 Na2S}

Answer:

1.00

Explanation:

I honestly have no idea. I found this online and apparently it was correct. I thought at first I would use d = RT/(Nₐ * P *π (2r)². Since all values besides T are constant, I thought the ratio would just be (273+80)/273 since 273 is standard temperature in Kelvin. However, I think the answer is 1.00 since the pressure would also increase since it is a rigid container, effectively cancelling out the increase in temperature.

The ratio of the mean free path of air molecules at 80 °C to their mean free path at STP is approximately 0.934.

The mean free path (MFP) of gas molecules is the average distance they travel between collisions with other molecules. It depends on the temperature, pressure, and molecular size of the gas. The MFP of air molecules at standard temperature and pressure (STP) is about 68 nanometers.

To find the ratio of the mean free path of air molecules at 80 °C to their mean free path at STP, we need to use the following formula:

Ratio = (MFP at 80 °C) / (MFP at STP)

The MFP at 80 °C can be calculated using the kinetic theory of gases, which states that:

MFP = (k × T) / (sqrt(2) × pi × d² × P)

where k is Boltzmann's constant, T is the temperature in Kelvin, d is the molecular diameter, and P is the pressure.

For air molecules, d is about 0.364 nanometers. At 80 °C (353 K), the pressure of air is about 101.3 kPa. Plugging these values into the formula, we get:

MFP at 80 °C = (1.38 × 10⁻²³ J/K ×353 K) / (sqrt(2) × 3.14 ×(0.364 × 10⁻⁹m)² ×101.3 × 10³ Pa)

MFP at 80 °C = 63.5 nanometers

Now we can calculate the ratio:

ratio = (MFP at 80 °C) / (MFP at STP)

ratio = 63.5 nm / 68 nm

ratio ≈ 0.934

Therefore, the ratio of the mean free path of air molecules at 80 °C to their mean free path at STP is approximately 0.934.

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Following the equation and the stoichiometry of the reaction,  excess reactant.

The excess reactant has to do with that reactant that is present in more amount than is required in the reaction.

In this case, we have the reaction; 2NBr3 + 3NaOH ---> N2 + 3NaBr + 3HOBr.

If 2 moles of NBr3  reacts with 3 moles of NaOH

x moles of NBr3   reacts with 48 moles of NaOH

x = 32 moles

Hence, NBr3 is the excess reactant.

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The equilibrium constant of the reaction is 1.21 * 10^6 while the change in free energy is -34.7 kJ.

The equilibrium constant shows the extent of conversion of reactants to products.

Now we know from the Nernst equation that;

Ecell = E°cell - 0.0592/n logQ

E°cell = 0.52−0.16=0.36 V

Since Ecell = 0 V at equilibrium,

0 = 0.36 - 0.0592/1 log K

0.36  = 0.0592/1 log K

log K = 0.36/ 0.0592

K = antiog (0.36/ 0.0592)

K = 1.21 * 10^6

ΔG = -RT lnK

ΔG =-(8.314 * 298 * ln1.21 * 10^6)

ΔG =-34.7 kJ

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Answer:

160 K, using 2 SF,

Explanation:

Ideal Gas law, rearrange to solve for T (K), answer about 158.3 round to 2SF

PV = nRT

The removal of this ion from water by the calcifiers will definitely decrease the pH of water.

The bicarbonate ion is the ion that is designated as HCO3-. We must notice that this ion is present in abundant amounts in the sea. This amount definitely make the sea slightly alkaline.

Now we must note that the removal of this ion from water by the calcifiers that require it to make their shell will definitely decrease the pH of water.

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Answer:

NRC: Seabrook nuke plant ran safely in 2020, concrete degradation being monitored. SEABROOK — According to federal experts, annual inspections throughout 2020 show NextEra Energy Seabrook's nuclear power plant again ran safely over the past year.

Explanation:

Answer:

I don't know that I have no anwser to that one

Since the pH of the substance is 5, the substance contains more of hydrogen ions.

The pH of a a solution is the negative logarithm to base ten of the hydrogen ions concentration of the solution.

[tex]pH = -log[H^{+}][/tex]

A neural solution has pH 7.

A solution with pH below 7 has more hydrogen ions while a solution with pH above 7 has more hydroxide ions.

The pH of a substance contains a hydrogen ion concentration of 1.0 x 10-5 M is 5.

Therefore, the substance contains more of hydrogen ions.

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Answer:

Explanation:

I think the answer is   Heart &  stomach,   but is this really a chemistry question?  or Biology?   :D

Answer:

A: heart

Explanation:

A muscle cell is also known as a myocyte when referring to either a cardiac muscle cell (cardiomyocyte), or a smooth muscle cell as these are both small cells.

Answer:

a)true. b)true c)false d)true e)false f)false g)true h)true

The reaction is a substitution reaction since bromide ion was replaced by hydroxide ion.

A chemical reaction is a change which results in a the permanent rearrangements of the atoms and constituents of a substance such that new substances are formed.

The given reaction is a as follows:

[tex]CH_3Br (aq) + OH^{-} (aq) \rightarrow CH_3OH (aq) + Br^{-} (aq) \\ [/tex]

Bromide ion was replaced by hydroxide ion.

Therefore, the reaction is a substitution reaction.

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Answer: D-substitution

Other person is right its

Explanation:

Answer:

About 0.37 M.

Explanation:

Recall that molarity is defined by moles of solute over total liters of solution:
[tex]\displaystyle \text{Molarity} = \frac{\text{ mols solute}}{\text{ L soln.}}[/tex]

Determine the amount of moles of HCl in 40.0 grams. The molecular weight of HCl is 36.46 g/mol:

[tex]\displaystyle 40.0\text{ g HCl} \cdot \frac{1\text{ mol HCl}}{36.46\text{ g HCl}} = 1.10\text{ mol HCl}[/tex]

Therefore, the molarity of the 3.0 L solution is:

[tex]\displaystyle\text{Molarity} = \frac{1.10\text{ mol}}{3.0\text{ L}} =0.37\text{ M}[/tex]

In conclusion, the molarity of the solution is about 0.37 M.

The liquid which has a low boiling point and is a poor conductor of electricity is Methane (CH4).

Covalent Compounds are compounds with low boiling point and are poor conductors of heat and electricity. Covalent compounds have strong intra-molecular bonds. This is because the atoms within the covalent molecules are very tightly held together.

Methane (CH4) is a liquid that has a low boiling point and is a poor conductor of electricity.

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