Ask question

Ask question

All categories

nikitadnepr [17]

3 years ago

14

Ari dissolves 1 gram of sugar in 10 grams of water. What will be the mass of the dissolved sugar and water ? Explain your answer

.

1 answer:

adell [148]3 years ago

5 0

Answer:

the answer would be 11 grams of water/sugar water

Explanation: its that because 11 grams plus 1 gram = 11 grams

even though it may seem it may just go away that mass has to go somewhere it just doesn't vanish from the earth.

You might be interested in

Which represents a linear graph?

Tpy6a [65]

Your answer is D. Hope this helps.
Linear graphs have representation as a STRAIGHT LINES.

7 0

3 years ago

Read 2 more answers

To which planet do scientist compare to Kepler-10

Stells [14]

To Earth, since it has the same radio and masses. This is what I believe.

7 0

4 years ago

The tabulated data were collected for this reaction:

erastovalidia [21]

Answer:

ai) Rate law, $Rate = k [CH_3 Cl] [Cl_2]^{0.5}$

aii) Rate constant, k = 1.25

b) Overall order of reaction = 1.5

Explanation:

Equation of Reaction:

$CH_{3} Cl (g) + 3 Cl_2 (g) \rightarrow CCl_4 (g) + 3 HCl (g)$

If $A + B \rightarrow C + D$ , the rate of backward reaction is given by:

$Rate = k [A]^{a} [B]^{b}\\k = \frac{Rate}{ [A]^{a} [B]^{b}}\\k = \frac{Rate}{ [CH_3 Cl]^{a} [Cl_2]^{b}}$

k is constant for all the stages

Using the information provided in lines 1 and 2 of the table:

$0.014 / [0.05]^a [0.05]^b = 00.029/ [0.100]^a [0.05]^b\\0.014 / [0.05]^a [0.05]^b = 00.029/ [2*0.05]^a [0.05]^b\\0.014 / = 0.029/ 2^a\\2^a = 2.07\\a = 1$

Using the information provided in lines 3 and 4 of the table and insering the value of a:

$0.041 / [0.100]^a [0.100]^b = 0.115 / [0.200]^a [0.200]^b\\0.041 / [0.100]^a [0.100]^b = 0.115 / [2 * 0.100]^a [2 * 0.100]^b\\$

$0.041 = 0.115 / [2 ]^a [2]^b\\ \[[2 ]^a [2]^b = 0.115/0.041\\ \[[2 ]^a [2]^b = 2.80\\\[[2 ]^1 [2]^b = 2.80\\\[[2]^b = 1.40\\b = \frac{ln 1.4}{ln 2} \\b = 0.5$

The rate law is: $Rate = k [CH_3 Cl] [Cl_2]^{0.5}$

The rate constant $k = \frac{Rate}{ [CH_3 Cl]^{a} [Cl_2]^{b}}$ then becomes:

$k = 0.014 / ( [0.050] [0.050]^(0.5) )\\k = 1.25$

b) Overall order of reaction = a + b

Overall order of reaction = 1 + 0.5

Overall order of reaction = 1.5

3 0

3 years ago

Adrenaline is the hormone that triggers the release of extra glucose molecules in times of stress or emergency. A solution of 0.

kow [346]

Explanation:

The work is to calculate the molar mass of the solute (adrenaline) from the elevation of the boling point and compare with the mass of the structural formula. If they both are reasonably equal then you conclude that the results are in agreement, else they are not in agreement.

Since, you did not include the structural formula, I can explain the whole procedure to calculate the molar mass from the boiling point elevation, and then you can compare with the mass of the structural formula that only you know.

Determination of the molar mass from the boiling point elevation.

1) With the elevation of the boiling point, which is a colligative property, you can find the molality of the solution, using the formula:

ΔTb = i * Kb * m

Where:

> ΔTb is the increase of the boiling point of ths solvent, i.e. CCl4.

> i van't Hoff constant = 1 (because the solute is non ionic)

> m is the molality of the solution

2) Clearing m you get:

m = ΔTb / Kb

Kb is a datum that you must find in a table of internet (since the statement does not include it).

I found Kb = 5.02 °C/m

Then, m = 0.49°C / (5.02°C/m) = 0.09760956 m

3) With m and the mass of solvent you find the number of moles of solute using the formula:

m = number of moles of solute / kg of solvent

You have the mass of the solvent = 36.0 g = 0.0360 kg, so you can solve for the number of moles of solute:

=> number of moles of solute = m * kg of solvent = 0.09760956 m * 0.036kg = 0.0035139 moles

4) With the nuimber of moles and the mass you find the molar mass:

molar mass = mass in grams / number of moles = 0.64 g / 0.0035139 moles = 182 g/mol <------------- this is the important result

5) Now that you have the molar mass you can compare with the mass of the molecular formula. If they are reasonably equal then you conclude that the <span>molar mass of adrenaline calculated from the boiling point elevation is in agreement with the structural formula</span>

3 0

3 years ago

Imagine a 10 kg block moving with a velocity of 20/ms to the left calculate the kinetic energy of this block

tino4ka555 [31]

Answer:

KE = 1/2 mv^2=0.5x 10 X 20^2= 800

Explanation

4 0

3 years ago