True or false is NaOH an example of salt ?

What is when the molecular weight of horseradish peroxidase is about 44,000 g/mol, The number of moles of the enzyme used per mole of vanillin is

ME=289.188moles

Generally, the equation for the moles of the enzyme  is mathematically given as

[tex]ME=\frac{molecular weight}{vanilin MW}[/tex]

Therefore

ME=44000/152.15

ME=289.188moles

In conclusion, the number of moles of the enzyme is

ME=289.188moles

Read more about Molarity

https://brainly.com/question/9149034

Explanation:

from internet

the act of transferring pollen grains from the male anther of a flower to the female stigma

Answer:

transfer of pollen from anther to stigma.

Explanation:

mark me main brainliest

Answer:

Pb2+(aq) + l+(aq) ------------pbl2(s) net ionic equation

Explanation:

Pb(NO3)2(aq) + kI(aq)------------PbI2(s) + kNo3(aq)

Pb2+ (aq)No3-(aq) + k+(aq) l-(aq) ______PbI2(s) + k+(aq) + NO32+(aq)

Pb2+(aq) + I-(aq). ------------Pbl2(s)

Answer:

Triphorphorus Pentanitride

Explanation:

since there are three phosphorus use the prefix tri-, since there are five nitrogen use the prefix penta. tri=3, penta=5. then add a suffix -ide to the end of nitrogen. that will give you triphosphorus pentanitride.

The number of mole of sodium sulphate, Na₂SO₄ that will be produced from 28.3 g of sodium hydroxide, NaOH is 0.35 mole

Mole = mass / molar mass

Mole of NaOH = 28.3 / 40

Mole of NaOH = 0.7075 mole

2NaOH + H₂SO₄ —> Na₂SO₄ + H₂O

From the balanced equation above,

2 moles of NaOH reacted to produce 1 mole of Na₂SO₄.

Therefore,

0.7075 mole of NaOH will react to produce = (0.7075 × 1) / 2 = 0.35 mole of Na₂SO₄

Thus, 0.35 mole of Na₂SO₄ was obtained from the reaction

Learn more about stoichiometry:

https://brainly.com/question/14735801

Explanation:

s=2

p=6

d=10

f=14

I hope this was helpful

Answer:

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\[/tex]

From the question

mass = 4.05 g

volume = 28 mL

We have

[tex]density = \frac{4.05}{28} \\ = 0.1446428571...[/tex]

We have the final answer as

Hope this helps you

Answer:

Explanation:

Hey there!

From question;

The molecular mass of NH₄OH is 35.

Avogadro number = 6.023*10²³ molecules.

Then,

From mole concept,

Molecular mass =  Avogadro number

So, 35 grams contains  6.023*10²³ molecules.

1 gram contains [tex]\frac{ 6.023*10^{23} }{35}[/tex] molecules.

52.1 grams contains [tex]\frac{6.023*10^{23} }{35} *52.1[/tex] molecules.

Therefore, 52.1 grams contains 8.96*10²³ molecules.

Hope it helps!

Answer:

The increase in kinetic energy that comes with higher temperatures allows the solvent molecules to more effectively break apart the solute molecules that are held together by intermolecular attractions.

Explanation:

Solubility is affected by temperature due to heatness.

Answer:

The rate law is

rate

=k[A][B]^2

Answer:

microscope

Explanation:

Answer:

0.02moles

Explanation:

To answer this question, the general gas law equation is used. The General gas law is:

Pv = nRT

Where; P = standard atmospheric pressure (1 atm)

V = volume (L)

n = number of moles

R = Gas law constant

T = Temperature

For this question; volume = 1.00L, atmospheric pressure (P) = 1 atm, R = 0.0821 L-atm / mol K, T = 600K, n = ?

Therefore; Pv = nRT

n = PV/RT

n = 1 × 1/ 0.0821 × 600

n = 1/49.26

n = 0.0203moles

Hence, there are 0.02 moles of gas.

The number of mole of the gas present in the cylinder is 0.02 mole

From the question given above, the following data were:

Temperature (T) = 600 K

Volume (V) = 1 L

Pressure (P) = 1 atm

The number of mole of the gas present in the cylinder can be obtained by using the ideal gas equation (PV = nRT) as illustrated below:

Temperature (T) = 600 K

Volume (V) = 1 L

Pressure (P) = 1 atm

Gas constant (R) = 0.0821 atm.L/Kmol

1 × 1 = n × 0.0821 × 600

1 = n × 49.26

Divide both side by 49.26

[tex]n = \frac{1}{49.26}\\\\[/tex]

Thus, 0.02 mole of the gas is present in the cylinder.

Learn more: https://brainly.com/question/12393538

when a circuit is open the electricity fails to pass through any of the wire causing all the lights to go out. If the lights are in a straight line each light is on its own circuit to the power source.

The required volume of sodium hydroxide is 15 mL.

The term concentration refers to the amount of substance present. It is the quotient of the number of moles and volume of solution.

We have the reaction; 2HCl(aq) → CaCl2(aq) + H2O(l) + CO2(g)

Number of moles of CaCO3 = 0.205 g / 100.1 g/mol = 0.0020 moles

Number of moles of HCl = 2.00 M * 7.50/1000 = 0.015 moles

Since 2 moles of HCl reacts with 1 mole of CaCO3

x moles of HCl reacts with 0.0020 moles

x = 0.004 moles of HCl

This means that HCl is in excess by the amount 0.011 moles.

Now consider the reaction; NaOH(aq) + HCl(aq) → H2O(l) + NaCl(aq)

Concentration of HCl = 0.011 moles/0.125L = 0.088 M

From;

CAVA/CBVB = na/nb

CAVAnb = CBVBna

VB = CAVAnb/CBna

VB = 0.088 M * 10mL * 1/0.058 M * 1

VB = 15 mL

Learn more about concentration: https://brainly.com/question/3045247

Answer:

6

Explanation:

slope= [tex]\frac{rise}{run}[/tex]

slope=[tex]\frac{6}{1}[/tex]

slope=6

Answer:

its one half

Explanation:

i learned this last week

Answer:

2.408 moles of hydrogen are in the sample.

Explanation:

Molecular formula of acetic acid =CH3COOH

Ratio of carbon to hydrogen :2/4:1/2

Measured  number of moles of carbon atoms = 1.204

Let the moles of hydrogen be = x

Number of carbon atoms in 1.204 mol = 1.204mol*Avogadro number

Number of hydrogen atoms in x mol = x*Avogadro number

As we know that ratio of carbon to hydrogen atoms is 1:2.

1/2=1.204mol* avogadro/ x* avogadro

x = 2.408 moles

2.408 moles of hydrogen are in the sample.

Answer:

Yes, this ring is pure gold because when we divide the mass by the volume we get our density for the ring, which comes out to about 19.32.

Explanation:

Answer:

0.67 g mL-1

Explanation:

Every time a problem asks you to find the density of a substance, your goal will essentially be to determine the mass of one unit of volume of said substance.

Answer:is 15.2%

Explanation:

Got it wrong and this the correct answer it told me

The percentage of water in the original sample is 15.2 %.

From the information provided in the question;

Weight of the wet sample = 5.00g

Weight of the dried sample = 4.24g

Loss in mass =  5.00g - 4.24g = 0.76 g

percentage of water in the original sample = Difference in mass between wet and dry sample/ mass of wet sample × 100/1

Hence, when we substitute values;

percentage of water in the original sample =  0.76 g/5.00g × 100/1

percentage of water in the original sample = 15.2 %

So, the percentage of water in the original sample is 15.2 %.

Learn more: https://brainly.com/question/14102587

Taking into account the definition of molarity, the molarity of solution of sodium sulfate is 0.0732 [tex]\frac{moles}{liter}[/tex].

Molar concentration or molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:

[tex]Molarity=\frac{number of moles}{volume}[/tex]

Molarity is expressed in units [tex]\frac{moles}{liter}[/tex].

In this case, you have:

Replacing in the definition of molarity:

[tex]Molarity=\frac{0.0366 moles}{0.5 L}[/tex]

Solving:

Molarity= 0.0732 [tex]\frac{moles}{liter}[/tex]

Finally, the molarity of solution of sodium sulfate is 0.0732 [tex]\frac{moles}{liter}[/tex].

Learn more about molarity:

brainly.com/question/9324116

brainly.com/question/10608366

brainly.com/question/7429224

1. The specific heat capacity of the sample of gold obtained is 0.81 J/gºC

2. The substance is not pure gold

The specific heat capacity of the sample of gold can be obtained as follow:

Heat loss = Heat gain

M₉C₉(M₉ –Tₑ) = MᵥᵥC(Tₑ – Tᵥᵥ)

2.74 × C₉(72.1 – 26.3) = 15.2 × 4.184 (26.3 – 24.7)

C₉ × 125.492 = 101.75488

Divide both side by 125.492

C₉ = 101.75488 / 125.492

C₉ = 0.81 J/gºC

From the above we can conclude that the substance is not pure gold since the calculated and standard value of the specific heat capacity of the gold sample is not the same

Learn more about heat transfer:

https://brainly.com/question/6363778

Answer: Chemistry is the properties, composition, and structure of elements and compounds, how they can change, and the energy that is released or absorbed when they change.

Explanation:

Answer:

The scientific study of the structure of substances and what happens to them in different conditions or when mixed with each other is known as Chemistry.

Answer:

Commercially, 2-methylpentenal is synthesized by the aldol condensation of propanal in the presence of liquid base like KOH or NaOH in stoichiometric amount,,. Under optimum reaction conditions, 99% conversion of propanal is achieved with 86% selectivity of 2-methylpentenal using liquid base.

Explanation:

hope this helps

Answer:

HMM, what the person above said.

Histidine, an essential amino acid, has as a positively charged imidazole functional group. The imidazole makes it a common participant in enzyme catalyzed reactions. The unprotonated imidazole is nucleophilic and can serve as a general base, while the protonated form can serve as a general acid.

Answer:

Explanation:

The protein comprises of two 60-kD polypeptides and two 40-kD polypeptides. Each one of the 40-kD chains has a disulfide-bond which is directly bonded to a 60-kD chain.

The 100-kD units attach noncovalently to produce a protein with a molecular mass of 200 kD. The interaction among the different subunits in the protein is not affected by the Gel filtration chromatography.

Hence, the protein seems to be 200 kD in size. When SDS-PAGE takes place samples are being subjected to heat and therefore undergoing denaturation conditions. The aftermath effect of this causes disorganization in the 100 kD units.

However, the reducing agent (BME) main task is the reduction of disulfide bonds in a protein.

It implies that BME is responsible for the reduction between the R1-S-S-R2 bond between 40 kD and 60 kD to R1-SH and R2-SH, resulting in seperate proteins.

Answer:

answer 7.4 atm

Explanation:

i did this and got it correct

Answer:

62.1 gram

Explanation:

Al molar mass = 27 g/mol

mass = molar mass × no of moles

= 27 × 2.3 = 62.1 gram

The number of moles of Co that would be required to react with 6.14 moles of P4 would be 36.84 moles

From the equation of the reaction:

6Co + P4 → 2Co3P2

For every 1 mole of P4, 6 moles of Co is required for complete reaction.

Thus, the mole of Co that would be needed for 6.14 moles of P4 would be:

                      6 x 6.14 = 36.84 moles

More on stoichiometric calculations can be found here: https://brainly.com/question/8062886