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
FinnZ [79.3K]
3 years ago
10

20 points to whoever can answer these 3 questions correctly

Chemistry
1 answer:
Mkey [24]3 years ago
8 0

Answer:

1) A. NO

2) B. 4

3) D. 8

Explanation:

You might be interested in
How many grams of glucose are in 11.5 moles?
mestny [16]

There are 2071.79 grams of glucose in 11.5 moles.

8 0
3 years ago
Oxidation number of au in kaucl4
DanielleElmas [232]
KauCl4 :

K = + 1 

au = + 7

Cl = - 2

hope this helps!

3 0
3 years ago
Read 2 more answers
20 mL of 80°C water is mixed with 20 mL of 0°C water in a perfect calorimeter. What is the final temperature?
OLga [1]
Times it bye for then ur answer will be 80
5 0
3 years ago
What is the boiling point of a solution of 76 g of water dissolved in 500 mL of acetic acid, CH3COOH?
tatuchka [14]

Answer:

127.3° C, (This is not a choice)

Explanation:

This is about the colligative property of boiling point.

ΔT = Kb . m . i

Where:

ΔT = T° boling of solution - T° boiling of pure solvent

Kb = Boiling constant

m = molal (mol/kg)

i = Van't Hoff factor (number of particles dissolved in solution)

Water is not a ionic compound, but we assume that i = 2

H₂O →  H⁺  +  OH⁻

T° boling of solution - 118.1°C =  0.52°C . m . 2

Mass of solvent =  Solvent volume / Solvent density

Mass of solvent = 500 mL / 1.049g/mL → 476.6 g

Mol of water are mass / molar mass

76 g / 18g/m = 4.22 moles

These moles are in 476.6 g

Mol / kg = molal → 4.22 m / 0.4766 kg = 8.85 m

T° boling of solution =  0.52°C . 8.85 m . 2 + 118.1°C =  127.3°C

6 0
3 years ago
Read 2 more answers
Identical wire loops are dipped into Liquid X and Liquid Y, so that a film of liquid forms across the loops (like the bubble sol
muminat

Answer:

a.

Explanation:

Assuming that Liquid X is considered to possess a greater viscosity as well as higher surface tension than liquid Y. Then, liquid X will tend to harbour more pressure inside the liquid.

In addition to that, the greater the surface tension, the greater the force required to expand the liquid's surface area.

This in turn makes the force required to make the loop 5% wider to be greater in FX rather than FY.

Thus, option a is the correct answer.

6 0
3 years ago
Other questions:
  • Which reacts with metals to form H2 gas
    15·1 answer
  • What is the volume of 1.0 mole of hydrogen gas at standard temperature and pressure ?
    12·2 answers
  • Separating Mixtures Checkpoint ( giving brainly )
    8·2 answers
  • A gas has a volume of 1.4 liters at STP. What is the new volume when the temperature is changed to 40 K and the pressure is chan
    10·1 answer
  • Help????????????????????
    10·1 answer
  • Which of the following elements is most nonmetallic - most wanting of electrons?
    11·1 answer
  • How many valence electrons does Florine have?<br> O 5<br> O 7<br> 3<br> 9
    6·2 answers
  • Which of the following have the greasiest ionization energy Bi, As, K or Ga?
    12·1 answer
  • It get hotter towards the center
    5·1 answer
  • What does the kinetic theory state about the relationship between the speed and temperature of gas molecules?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!