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
Zepler [3.9K]
3 years ago
14

Will Mark brainliest fro correct answer!!!! Please answer in the picture chemistry

Chemistry
1 answer:
tiny-mole [99]3 years ago
6 0

Answer:

look at the graph

Explanation:

We know that as temperature increases, solubility increases.So, when there is a rise in temperature, as more solute become dissolved, the saturation point will be lifted and more amount of solute will be needed to reach saturation.

Here, when the temperature was 20oC, 38 g of salt was needed for saturation. As the temperature is increased by 15oC, at 35oC more amount of salt was needed to reach saturation(45g). So a 15oC rise in temperature caused a 7 g rise in the amount of salt needed for saturation. So, if temperature is increased additionally through 10oC, an approximate 4.5 g of salt will be needed more to reach the saturation. That is at 45oC, the amount of salt at saturation will be approximately 49.5 g.

So, the temperature and solubility as well as temperature and amount of salt at saturation are linearly related(directly proportional)

You might be interested in
Nitrogen is used to protect steel from water because nitrogen has _____.
viva [34]

Answer:

low reactivity.

Explanation:

3 0
4 years ago
Read 2 more answers
Ii) The valency of which the element is zero.<br>a) lead. b) bromine c) helium. d) nitrogen​
stira [4]

Answer:

Helium, Neon, Radon and Argon have zero valency because they have their outer shell completely filled and are chemically inert gas. Was this answer helpful

Explanation:

hope it will help you

6 0
1 year ago
Read 2 more answers
This group of fungi has reproductive cells with flagella so that they can swim
dangina [55]

Answer:

The answer would be chytrids.

5 0
4 years ago
is 0.0410 M−1 s −1 . We start with 0.105 mol C2F4 in a 4.00-liter container, with no C4F8 initially present. What will be the co
Jet001 [13]

Answer:

After three hours, concentration of C₂F₄ is 0.00208M

Explanation:

The rate constant of the reaction:

2 C2F4 → C4F8 is 0.0410M⁻¹s⁻¹

As the units are M⁻¹s⁻¹, this reaction is of second order. The integrated law of a second-order reaction is:

\frac{1}{[A]} =\frac{1}{[A]_0} +Kt

<em>Where [A] and [A]₀ represents initial and final concentrations of the reactant (C₂F₄), K is rate constant (0.0410M⁻¹s⁻¹) and t is time of the reaction (In seconds). </em>

3.00 hours are in seconds:

3 hours ₓ (3600 seconds / 1 hour) = 10800 seconds

Initial concentration of C2F4 is:

0.105mol / 4.00L = 0.02625M

 

Replacing in the integrated law:

\frac{1}{[A]_0}= \frac{1}{0.02625}  +0.0410M^{-1}s^{-1}*10800s\\\frac{1}{[A]_0}=480.9M^{-1}

[A] = 0.00208M

<h3>After three hours, concentration of C₂F₄ is 0.00208M</h3>
5 0
3 years ago
A 0.1025-g sample of copper metal is dissolved in 35 ml of concentrated hno3 to form cu2 ions and then water is added to make a
GalinKa [24]

Molarity is defined as number of moles of solute in 1 L of solution.

Here, 0.1025 g of Cu is reacted with 35 mL of HNO_{3} to produced Cu^{2+} ions.

The balanced reaction will be as follows:

Cu+3HNO_{3}\rightarrow Cu(NO_{3})_{2}+NO_{2}+H_{2}O

From the above reaction, 1 mole of Cu produces 1 mole of Cu^{2+}, convert the mass of Cu into number of moles as follows:

n=\frac{m}{M}

molar mass of Cu is 63.55 g/mol thus,

n=\frac{0.1025 g}{63.55 g/mol}=0.0016 mol

Now, total molarity of solution, after addition of water is 200 mL or 0.2 L can be calculated as follows:

M=\frac{n}{V}=\frac{0.0016 mol}{0.2 L}=0.008 mol/L=0.008 M

Thus, molarity of Cu^{2+} is 0.008 M.



7 0
3 years ago
Other questions:
  • If 10.0 moles of O₂ are reacted with excess NO in the reaction below, and only 4.2 mol of NO₂ were collected, then what is the p
    15·1 answer
  • WILL MARK YOU THE BRAINLIEST IF YOU ANSWER THESE TWO QUESTION CORRECTLY :)
    8·1 answer
  • If and electron is heated or electrified, it will give off light energy as it moves from a lower to a higher electron energy lev
    14·1 answer
  • If you make an electromagnet using a battery circuit and a steel nail, how can you increase its magnetic strength? A. replace th
    12·2 answers
  • Help asap ill mark brainliest!
    12·1 answer
  • In what physical state does chlorine exist at -65 C?
    13·1 answer
  • Why does the atmosphere weigh so much
    13·2 answers
  • Does anyone know the working or awnsers anything will help please?!!
    9·1 answer
  • Help Me Guys I Need This Now ​
    14·2 answers
  • Diamond has a density of 3.513 g/cm³. The mass of diamonds is often measured in "carats," where 1 carat equals 0.200
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!