1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
creativ13 [48]
3 years ago
10

Vinegar 59g, Oil 177g, Brown sugar 10g, and total mass

Chemistry
1 answer:
denis-greek [22]3 years ago
3 0

Answer:

Total mass = 246 g

Explanation:

Given data:

Mass of vinegar = 59 g

Mass of oil = 177 g

Mass of brown sugar = 10 g

Total mass = ?

Solution:

Total mass = masses of [sugar + oil + vinegar]

Total mass = 59 g + 177 g + 10 g

Total mass = 246 g

You might be interested in
Aspirin (acetylsalicylic acid, C9H8O4) is a weak monoprotic acid. To determine its acid-dissociation constant, a student dissolv
Triss [41]

Answer:

1. 3.57\times 10^{-4}was the K_a value calculated by the student.

2. 5.93\times 10^{-4}was the K_b of ethylamine value calculated by the student.

Explanation:

1.

The pH value of Aspirin solution = 2.62

pH=-\log[H^+]

[H^+]=10^{-2.62}=0.00240 M

Moles of s asprin = \frac{2.00 g}{180 g/mol}=0.01111 mol

Volume of the solution = 0.600 L

The initial concentration of Aspirin  = c = \frac{0.01111 mol}{0.600 L}=0.0185 M

HAs\rightleftharpoons As^-+H^+

initially

c       0    0

At equilibrium

(c-x)      x   x

The expression of dissociation constant :

K_a=\frac{[As^-][H^+]}{[HAs]}:

K_a=\frac{x\times x }{(c-x)}

=\frac{0.00240 M\times 0.00240 M}{(0.0185-0.00240 )}

K_a=3.57\times 10^{-4}

3.57\times 10^{-4}was the K_a value calculated by the student.

2.

The pH value of ethylamine = 11.87

pH+pOH=14

pOH=14-11.87=2.13

pOH=-\log[OH^-]

[OH^-]=10^{-2.13}=0.00741 M

The initial concentration of ethylamine = c = 0.100 M

C_2H_5NH_2+H_2O\rightleftharpoons C_2H_5NH_3^{+}+OH^-

initially

c                    0    0

At equilibrium

(c-x)                x   x

The expression of dissociation constant :

K_b=\frac{[C_2H_5NH_3^{+}][OH^-]}{[C_2H_5NH_2]}:

K_b=\frac{x\times x}{(c-x)}

=\frac{0.00741\times 0.00741}{(0.100-0.00741)}

K_b=5.93\times 10^{-4}

5.93\times 10^{-4}was the K_b of ethylamine value calculated by the student.

3 0
3 years ago
Please help! BRAINLIEST to right answer
Anastasy [175]

Answer:

Hailey the answer is D.

Explanation:

if liquid to solid is exothermic then then the other way around would be endorhermic

5 0
3 years ago
NEED HELP ASAP LAST QUESTION CANT GET WRONG !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
yaroslaw [1]

A local community needs to provide more electricity for its growing population. Currently, the community's electricity needs are met by coal-burning power plants several kilometres away. Citizens are concerned that burning more coal will produce too much air pollution.

Which of the following could be used as an alternative energy resource to help minimise air pollution in this community?

A.  hydroelectric energy

B.  solar energy

C.  wind energy

<u>D.   all of these </u>

<u />

8 0
3 years ago
How are properties useful in classifying materials
lukranit [14]
S. Properties can be anything from composition to color to ductility. Without knowing an object's properties, it is impossible to characterize it. For example, looking at some common properties of metals helps to differentiate them from non-metals or metalloids.
5 0
3 years ago
Read 2 more answers
What quantity do units represent in a value ?
Mazyrski [523]

A measured value is expressed as a number along with a corresponding unit. The unit represents the dimension of the measured value.

For example:

- Length of an object can be expressed as, value + dimension. for example 10 m where 'm' is the dimension of length; meters

- Volume can be expressed as, value + dimension, for example, 10 L where L is the dimension of volume; Liters.

Ans C) Dimension

7 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following atoms has six valence electrons? (2 points)
    9·1 answer
  • Iron(III) oxide reacts with carbon monoxide according to the equation: Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g) A reaction mixture initial
    5·1 answer
  • High- and low-pressure areas leading to air movement happen when there are differences in: A. density B. clouds C. precipitation
    7·2 answers
  • How to find how many electrons are in an element
    12·1 answer
  • What's the answer to this question?
    8·2 answers
  • Which of the following is most likely to have a crystalline structure? wood rubber glass quartz
    12·2 answers
  • Which of the samples would be classified as a mixture
    5·1 answer
  • Classify the molecules based on whether the molecule has a standard enthalpy of formation, AH;, equal to 0. Assume all
    11·1 answer
  • Connect and Apply scientific knowledge to explain the following situations:
    10·1 answer
  • At the top of a hill, an athlete on a skateboard has X joules of mechanical energy. How much mechanical energy will she have at
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!