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
Elena-2011 [213]
3 years ago
14

Determine the volume of 12.3 grams of formaldehyde gas at STP?

Chemistry
2 answers:
maxonik [38]3 years ago
5 0

Answer: 9.18 L

Explanation: Solution attached.

Convert mass of CH2O to moles

Derive V from PV= nRT

Substitute the values.

postnew [5]3 years ago
3 0
9.184 liters CH2O at STP

I think this is correct. Good luck
You might be interested in
When HClO2 is dissolved in water, it partially dissociates according to the equation
Natasha_Volkova [10]

Answer:

x = 100 * 1.1897 = 118.97 %, which is > 100 meaning that all of the HClO2 dissociates

Explanation:

Recall that , depression present in freezing point is calculated with the formulae = solute particles Molarity x KF

0.3473 = m * 1.86

Solving, m = 0.187 m

Moles of HClO2 = mass / molar mass = 5.85 / 68.5 = 0.0854 mol

Molality = moles / mass of water in kg = 0.0854 / 1 = 0.0854 m

Initial molality

Assuming that a % x of the solute dissociates, we have the ICE table:

                 HClO2         H+    +   ClO2-

initial concentration:       0.0854                    0             0

final concentration:      0.0854(1-x/100)   0.0854x/100   0.0854x / 100

We see that sum of molality of equilibrium mixture = freezing point molality

0.0854( 1 - x/100 + x/100 + x/100) = 0.187

2.1897 = 1 + x / 100

x = 100 * 1.1897 = 118.97 %, which is > 100 meaning that all of the HClO2 dissociates

3 0
3 years ago
Pls help
bezimeni [28]

Answer:

Particle Symbol Mass

electron e- 0.0005486 amu

proton p+ 1.007276 amu

neutron no 1.008665

8 0
3 years ago
It is composed of an alloy that is 90% Platinum and 10% Iridium; having a density of 21.186 g/cm3. What is the volume of the Sta
oksian1 [2.3K]
The alloy has a density of 21.186g/cc. So for a kilogram or 1000 grams/21.186 g/cc= 45.7 cc. So the answer is 45.7 cc of the allow to make up a kilogram which shows that the density of the allow can be used to calculate the volume of a larger mass ie the kilogram. 
7 0
3 years ago
ASAP something that flows into a substance
Radda [10]

Answer:

can oxygen exist as a liquid and solid

7 0
2 years ago
What vesicular transport process do you think is involved in the toxin entering the neuron?
Masja [62]
There are two types of vesicular transport processes, exocytosis and endocytosis. Endocytosis is the process which is involved in the toxin entering the neuron. This process is where cells intake waste or chemical transmitters which are suspended or dissolved in the extracellular fluid around the cell. <span />
7 0
3 years ago
Other questions:
  • What is the mass number of an atom with 7 protons, 8 neutrons, and 7 electrons?
    11·2 answers
  • luminum and oxygen react according to the following equation: 4Al(s) +3O2(g) --&gt; 2Al2O3(s) What mass of Al2O3, in grams, can
    7·1 answer
  • Which one of these statements about carbon tetrachloride fire extinguishers is true?
    11·1 answer
  • A solution is made using 199.7 g of toluene and 80 g of benzene. What is the molality of the tolunene in the solution?
    12·1 answer
  • How many atoms are in 3.690 moles of oxygen
    13·1 answer
  • Is hydrogen dioxide (water) always produced when an acidic solution is mixed with a basic solution?
    8·2 answers
  • A chemist titrates 120.0 mL of a 0.4006 M hydrocyanic acid (HCN) solution with 0.6812 MNaOH solution at 25 °C. Calculate the pH
    9·1 answer
  • What is a supercontinent? <br><br> please help me!
    14·1 answer
  • How many particles are in 2.5 mol of water, H2O?
    15·2 answers
  • What mass of oxygen is needed to burn 4g of hydrogen, given the equation below
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!