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
horrorfan [7]
2 years ago
13

Which statements about mixture is FALSE?

Chemistry
1 answer:
zalisa [80]2 years ago
4 0
It’s b I took the test
You might be interested in
How many atoms of carbon are found in a 30.0 gram sample of the element?
saveliy_v [14]

Answer:

1.50 × 10²⁴ atoms C

Explanation:

Step 1: Define

Molar mass of C - 12.01 g/mol

Avagadro's Number: 6.02 × 10²³ atoms, molecules, formula units, etc.

Step 2: Use Dimensional Analysis

30.0 \hspace{3} g \hspace{3} C(\frac{1 \hspace{3} mol \hspace{3} C}{12.01 \hspace{3} g \hspace{3} C} )(\frac{6.02(10)^{23} \hspace{3} atoms \hspace{3} C}{1 \hspace{3} mol \hspace{3} C} ) = 1.50375 × 10²⁴ atoms C

Step 3: Simplify

We are given 3 sig figs.

1.50375 × 10²⁴ atoms C ≈ 1.50 × 10²⁴ atoms C

3 0
3 years ago
How many electrons are transferred between the cation and anion to form the ionic bond in one formula unit of each compound? (1
rosijanka [135]
Here are the solutions:
For NaCl, there would be one electron transferred from the sodium atom, now producing a cation to the chlorine atom resulting in a chlorine anion. Forming ionic bond.
For CaS, there would be 2 electrons transferred from an atom of Ca to S, this can be obtained by simply looking at the ionic charges and or combining capacities of Ca.
For BaO, likewise, 2 electrons that are valence electrons are transferred from Ba to Oxygen.
In the ionic compound of KBr, the atom of K, potassium donated its one valence electron to Br, in need of it to achieve a stable octet, and produce the chemical bond.
Finally, LiF, a single valence electron is transferred from a metal atom of Li to F, for both of the atoms that would form the ionic bond to achieve a stable octet, and or full electron shell.
3 0
3 years ago
A 155g sample of an unknown substance was; heated from 25.0°c to 40°c. In the process, the substance absorbed 2085 J of energy.
Archy [21]

Answer:

0.897 J/g°C

Explanation:

Step 1:

Data obtained from the question. This includes the following:

Mass (M) of substance = 155g

Initial temperature (T1) = 25.0°C

Final temperature (T2) = 40°C

Change is temperature (ΔT) = T2 – T1 = 40°C – 25.0°C = 15°C

Heat Absorbed (Q) = 2085 J

Specific heat capacity (C) of the substance =?

Step 2:

Determination of the specify heat capacity of the substance.

Applying the equation: Q = MCΔT, the specific heat capacity of the substance can be obtained as follow:

Q = MCΔT

C = Q/MΔT

C = 2085 / (155 x 15)

C = 0.897 J/g°C

Therefore, the specific heat capacity of the substance is 0.897 J/g°C

8 0
3 years ago
Why fluorine is more electronegative than both oxygen and chlorine.
ziro4ka [17]
Why chlorine has highest electron affinity than fluorine?

This is because the atomic radius increases down a group. The electron gained ends up in the outermost shell. ... Fluorine, which is higher up the group then chlorine, has a lower electron affinity. This is because the electrons in the outermost shell of a fluorine atom are closer together.
4 0
2 years ago
What volume would 3 moles of hydrogen gas occupy at stp?
Alchen [17]
22.4 L<span>So, if 1 mole occupies 22.4 L, the imediate conclusion is that a bigger number of moles will occupy more than 22.4 L, and a smaller number of moles will occupy less than 22.4 L. In your case, 3 moles of gas will occupy 3 times more volume than 1 mole of gas.</span>
3 0
3 years ago
Other questions:
  • n a chemical reaction, water decomposes to form hydrogen and oxygen. What is the correct term for the water? Question 5 options:
    9·1 answer
  • Determine the number of atoms in 1.70 ml of mercury. (the density of mercury is 13.5 g/ml.)
    13·1 answer
  • A liquid has a pH of 6.8. Write the formula for calculating the [H+] and then determine the value of [H+], making sure to includ
    8·1 answer
  • AlCl3 and NaNO3<br> Balanced Equation<br> Total Ionic Equation<br> Net Ionic Equation
    13·1 answer
  • How many electrons are shared in a single bond?
    6·1 answer
  • A sample of gas has an initial volume of 25 L and an initial pressure of 3.5 Pa. If the pressure changes to 1.3 Pa, find the new
    10·1 answer
  • A gas occupies 65 mL at a temperature of 92.4 °C. What is the volume at 87.6 °C?
    8·1 answer
  • Rotation is the spin of a body on its axis. Revolution is the movement of one body around another in an ellipse-shaped path call
    13·1 answer
  • NO BOTS!<br> Determine the total net force and the direction of movement for the situation.
    8·1 answer
  • According to the article, elements are named by the number of protons in the nuclei.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!