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
alex41 [277]
3 years ago
13

Chemistry unit 3 lesson 14 unit test connexus

Chemistry
1 answer:
Leno4ka [110]3 years ago
7 0

Answer: what is the question

You might be interested in
A solution is prepared by mixing 2.88 mol of acetone with 1.45 mol of cyclohexane at 30°C. 2nd attempt Calculate the χacetone an
Volgvan
First c<span>alculate the mole fraction of each substance:
acetone: 2,88 mol </span>÷ (2,88 mol + 1,45 mol) = 0,665.
cyclohexane: 1,45 ÷ (2,88 mol + 1,45 mol) = 0,335.
Raoult's Law: 
P(total) = P(acetone) · χ(acetone)  + P(cyclohexane) · χ(cyclohexane).
P(total) = 229,5 torr · 0,665 + 97,6 torr · 0,335.
P(total) = 185,3 torr.
χ for acetone: 229,5 torr · 0,665 ÷ 185,3 torr = 0,823.
χ for cyclohexane:  97,6 torr · 0,335 ÷ 185,3 torr = 0,177.

8 0
3 years ago
Avanti works in a bookstore. She has four books and is going to place them in two stacks. The diagram above shows the books befo
Feliz [49]

Answer:

Well they didn't transfer any energy when they weren’t touching and it did t produce any energy if it didn’t move. Since they are on top of each other they are causing momentum on each other creating kinetic energy

Explanation:

3 0
3 years ago
Calcium reacts with oxygen to form calcium oxide. The chemical equation for this reaction is Ca + O2→CaO . What is the product,
iris [78.8K]

Answer:

A. CaO

Explanation:

Reactant are the species that take part in and also undergoes the reaction to form species which are known as products.

Symbolic representation of the chemical reaction with the help of the formulas and symbols is known as chemical equation. In the chemical equation, reactants are written at left-hand side as well as products are expressed or written on right-hand side. The coefficients which are written before the formulas or the symbols are known as stoichiometric numbers.

Thus, in the reaction shown below:-

Ca+O_2\rightarrow CaO

<u>Thus, The product of the reaction is:- CaO</u>

5 0
3 years ago
The second-order diffraction for a gold crystal is at an angle of 22.20o for X-rays of 154 pm. What is the spacing between the c
Alenkinab [10]

<u>Answer:</u> The spacing between the crystal planes is 4.07\times 10^{-10}m

<u>Explanation:</u>

To calculate the spacing between the crystal planes, we use the equation given by Bragg, which is:

n\lambda =2d\sin \theta

where,

n = order of diffraction = 2

\lambda = wavelength of the light = 154pm=1.54\times 10^{-10}m     (Conversion factor:  1m=10^{12}pm )

d = spacing between the crystal planes = ?

\theta = angle of diffraction = 22.20°

Putting values in above equation, we get:

2\times 1.54\times 10^{-10}=2d\sin (22.20)\\\\d=\frac{2\times 1.54\times 10^{-10}}{2\times \sin (22.20)}\\\\d=4.07\times 10^{-10}m

Hence, the spacing between the crystal planes is 4.07\times 10^{-10}m

4 0
3 years ago
Which of the following is not a form of energy?
Dafna1 [17]
The answer is pressure
3 0
3 years ago
Read 2 more answers
Other questions:
  • When electrons are added to the outer most shell of a carbon Atom it forms?
    7·1 answer
  • How do you balance Fe2O3+CO=Fe+CO2
    8·1 answer
  • What volume of nitrogen dioxide is formed at 735 torr and 28.2 °C by reacting 3.56 cm3 of copper (d = 8.95 g/cm3) with 200 mL of
    9·1 answer
  • What are the relationships between melting and freezing of a mixture
    14·1 answer
  • 9. (02.02 мс)<br> Look at the diagram of an atom.<br> What is the atom's mass number? (2 points)
    13·2 answers
  • Which of the following is not an example of Le Châtelier's principle in action? A. release of oxygen in the human body B. deposi
    8·2 answers
  • Identify the element below and give the symbols of the other elements in its group. [Ar]4s23d104p4
    11·1 answer
  • How many moles are contained in 7.88 x 1024 atoms of Iron?
    14·1 answer
  • On this graph below, the independent variable is
    9·1 answer
  • I need help with this
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!