How to find moles of a cooking recipe? Chemistry project help please

The rate of second order reaction depends on the change in the concentration of the reactants.

A second order reaction is one in which the rate of reaction depends on the concentration of reactants.

For a second order reaction;

1/[A] = kt + 1/[A]o

When concentration deceresases to one-half;

1/0.1 = 0.54t + 1/0.20

1/0.1 -  1/0.20 = 0.54t

10 - 5/0.54 = t

t = 9.3 s

When concentration deceresases to one-sixteenth;

1/0.0125 = 0.54t + 1/0.20

1/0.0125 -   1/0.20 = 0.54t

80 - 5 =  0.54t

t = 80 - 5/0.54

t = 149 s

When concentration deceresases to one-ninth;

1/0.022 =  0.54t + 1/0.20

1/0.022  -   1/0.20 = 0.54t

45 - 5 =  0.54t

t = 45 - 5/0.54

t = 74 s

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Answer:

it says tick the box next to the correct answer so it'd be right to tick the last box:

The particles of the gas slow down

Answer:

20÷4=5g/ml, bcz it is in mL but in other situations you will need to convert it to L by dividing it by 1000

Mass= 20.0g

Volume= 4.0mL

Density of substance

[tex]\text{Density} = \frac {\text{Mass}}{ \text{Volume}}[/tex]

[tex] \text{Density} = \frac{20.0 \text{ \: g}}{4.0 \: \text{mL}} \\ \\ \text{Density} = \frac{ \cancel{20.0}\text{ \: g}}{ \cancel{4.0} \: \text{mL}} \\ \\ \text{Density} = 5.0 \: \text{g/mL}[/tex]

[tex]\therefore \text{Option B}= 5.0 \: \text{g/mL is the correct answer}[/tex]

[tex]\tt \large{\boxed{\bold{Nt=No.(\frac{1}{2}) ^{\frac{T}{t1/2} } }}[/tex]

Nt/No = 1/8

T = duration of decay

t 1/2 = half-life

[tex]\tt \dfrac{1}{8}=\dfrac{1}{2}^\dfrac{T}{5}}\\\\(\dfrac{1}{2})^3=\dfrac{1}{2}^\dfrac{T}{5}}\\\\3=\dfrac{T}{5}\rightarrow T=15~years[/tex]

Answer:

the chemical formula of benzaldehyde is C₇H₆O

Answer:

The moles of potassium that you would need to prepare 1200 g of 5% potassium sulfate solution is 1.538 moles

Based on the mechanism shown above, the correct rate law that is consistent with the sample reaction is [tex]B+D \rightarrow ^{k_{-1}} E+C[/tex].

Rate law can be defined as a chemical equation that is used to relate the initial (forward) chemical reaction rate with respect to the concentrations of both the chemical reactants and constant parameters.

Mathematically, the rate law is given by this formula:

[tex]R = K[A]^x[B]^y[C]^z[/tex]

Where:

Based on the mechanism shown above, the correct rate law that is consistent with the sample reaction is as follows:

                                       [tex]B+D \rightarrow ^{k_{-1}} E+C[/tex]

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The products of this reaction between aluminum and sulfuric acid are two: hydrogen and aluminum sulfate.

This concept refers to the substances obtained at the end of the reaction.

It means to make sure there are the same molecules in the reactants and products.

2Al + 3H2SO4 = Al2 (SO4)3 + 3H2

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Answer:

why is most space exploration accomplished with spacecraft that do not have crews on board? humans face many challenges in space. what is one advantage of using an orbiter to study objects in space? can be used for long periods of time.

Answer:

0.15 moles

Explanation:

6.7moles x 1 mole co2 over 44.01 g = 0.15 moles

A FAS-DPD titration is as simple as a test for total alkalinity or calcium hardness. A buffered DPD indicator powder is added to a water sample and reacts with chlorine to produce the pink color characteristic of the standard DPD test.

In which method ferric ammonium sulphate is used as an indicator?

Chemical analysis is the name of the method when ferric ammonium sulphate is used as the indicator. Basically, this method is used in the making of pharma elements. It is used in standardizing the formulation.

What is a DPD test?

The DPD test is used extensively in water treatment to determine the level of disinfectant present. In most cases, this is Free Chlorine but it can be used to measure other parameters ( oxidants ). It is a quick and relatively easy test which requires little background or skill to perform.

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Answer:

A) Nuculear

Explanation:

Nuclear powerplants are danguorous for the ecosystem and incase of an exsplosion nuclear is the hardest to recover from. Especially if you know the story about Chernobyl blow up. many animals began to grow diffrent mutations and evryone had to evacuate from having desieses and mutations.

Hoped this helped...

Answer:

it is charles's law

Explanation:

volume does matter with pressure

Answer:

Explanation:

Copepods. The single eye gave them the nickname of "cyclops"

For a Cu/Cu2+ concentration cell has a voltage of 0.21 V at 25 ∘C, the concentration  is mathematically given as

c1=2.7*10^6.77m

Generally, the equation for the Chemical reaction  is mathematically given as

Cu---->cu  +2^e    O

2e+Cu+2  ---->Cu    R

Therefore

[tex]Ecell=\frac{0.0591}{n}log(c2/c1)\\\\0.25=\frac{0.0591}{2}log(1.6*10^{-3}/c1)[/tex]

c1=2.7*10^6.77m

In conclusion, the concentration is

c1=2.7*10^6.77m

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Molar mass of NaCl:-

Now

Answer:

c

Explanation:

The innate immune system is the body's first line of defense against germs entering the body. It responds in the same way to all germs and foreign substances, which is why it is sometimes referred to as the "nonspecific" immune system

Answer:

b. Individual atoms of argon

Explanation:

Hope this helps!

-Justin

c. A sulfide ion has 2- charge because it gaines two electrons

thia statement is true.

Answer:

a new scientific discovery that benefits the environment

Answer:

snow, or freezing rain?

Explanation:

because freezing rain can occur then, but snow is more common.

Answer:

Soap and tomato juice :)

Explanation:

Using different types of pH levels may affect the results, so that is why I think this would be a good experiment to do. :)

Have an amzing day!!

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Answer:

Using litmus paper

Explanation:

Answer:

3.97 psi

Explanation:

The new pressure can be found by using the formula for Boyle's law which is

P1 V1 = P2 V2

Answer:

1.85 g of hydrogen gas will form!

Explanation:

1. Write the balanced equation.

Zn

+

2HCl

→

ZnCl

2

+

H

2

2. Calculate the moles of

Zn

.

Moles of Zn

=

30.0

g Zn

×

1 mol Zn

65.38

g Zn

=

0.4589 mol Zn

3. Calculate the moles of

H

2

.

Moles of H

2

=

0.4589

mol Zn

×

2 mol H

2

1

mol Zn

=

0.9177 mol H

2

4. Calculate the mass of

H

2

.

Mass of H

2

=

0.9177

mol H

2

×

2.016 g H

2

1

mol H

2

=

1.85 g H

2

The product of heating succinic acid is succinic anhydride, which is a structure with four carbon atoms, four hydrogen atoms, and three oxygen atoms.

If succinic acid is heated the initial reactant (succinic acid) releases water, which changes the identity of the substance as succinic acid becomes succinic anhydride.

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The molarity of the 500 mL KOH solution needed to neutralize the 40 mL of 2.50 M HCl is 0.2 M

HCl + KOH —> KCl + H₂O

From the balanced equation above,

The mole ratio of the acid, HCl (nA) = 1

The mole ratio of the base, KOH (nB) = 1

MaVa / MbVb = nA / nB

(2.5 × 40) / (0.15 × Vb) = 1

100 / (Mb × 500) = 1

Cross multiply

Mb × 500 = 100

Divide both side by 500

Mb = 100 / 500

Mb = 0.2 M

Thus, the molarity of the KOH solution needed is 0.2 M

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Answer:

N2 and NH3 both have 3 so try one of those ones