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
Kamila [148]
3 years ago
7

CHEMISTRY HELP PLEASE ASAP!

Chemistry
1 answer:
AlexFokin [52]3 years ago
7 0

1 is 3.16 you divide 57.02g by 18g


3 is 0.298 you divide 17.45g by 58.44g


You might be interested in
For the reaction CO2(g) + H2(g)CO(g) + H20(g)
Studentka2010 [4]

Answer:

The ΔG° is 29 kJ and the reaction is favored towards reactant.

Explanation:

Based on the given information, the ΔH°rxn or enthalpy change is 41.2 kJ, the ΔS°rxn or change in entropy is 42.1 J/K or 42.1 * 10⁻³ kJ/K. The temperature given is 289 K. Now the Gibbs Free energy change can be calculated by using the formula,  

ΔG° = ΔH°rxn - TΔS°rxn

= 41.2 kJ - 289 K × 42.1 × 10⁻³ kJ/K

= 41.2 kJ - 12.2 kJ

= 29 kJ

As ΔG° of the reaction is positive, therefore, the reaction is favored towards reactant.  

5 0
3 years ago
Sprinkler powder on the carron board _________ friction​
VARVARA [1.3K]

Answer:

Sprinkling of powder on the carom board <u>reduces</u> friction.

5 0
3 years ago
Read 2 more answers
When the temperature of a substance _____, the motion of the atoms that make up that substance _____.
Mkey [24]
Increase in temperature makes the atoms speed up, and decrease in temperature makes the atoms move slower.
7 0
3 years ago
How do cows contribute to the production of greenhouse gases?
miss Akunina [59]

Answer:

Cattle produce a lot of methane gas, primarily through enteric fermentation and fermentation of their manure. Methane is a powerful greenhouse gas that, along with nitrous oxide, carbon dioxide, and some other compounds in the atmosphere, create a blanket around our planet.

3 0
3 years ago
Read 2 more answers
A 1.2 kg block of iron at 32 ∘C is rapidly heated by a torch such that 12 kJ is transferred to it. What temperature would the bl
lbvjy [14]

Answer:

For iron

Final temperature = 54,22°C

For copper

Final Temperature = 63.67 °C

Explanation

Hello,

You are using a torch to warm up a block of iron that has an initial temperature of 32°C.

The first you have to know is that the "heat capacity" could simply define as the heat required to go from an initial temperature to a final temperature.

So you need to use the heat capacity equation as follow in the paper.

The equation has to have all terms in the same units, so:

q = 12000 J

s = 0.450 J / g °C

m = 1200 g

Ti = 32 °C

Download odt
3 0
3 years ago
Other questions:
  • In synthesis reactions, there are always more _____________ than ________________.
    12·1 answer
  • What is the main difference between protons and neutrons
    6·2 answers
  • If the vapor pressure of an aqueous solution containing 6.00 moles of a nonvolatile solute has a vapor pressure of 19.8 torr, an
    13·1 answer
  • Another question please help!!! :)
    6·1 answer
  • 10. Predict the mass of nitrogen dioxide produced if 2.30 L of ammonia are allowed to react
    12·1 answer
  • Somebody please help asap​
    5·2 answers
  • What change in volume results if 75.0 mL of gas is cooled from 100.0 °C<br> to 0.00 °C
    7·1 answer
  • Define symbole and valeny.​
    9·1 answer
  • What is conservation of matter? What is matter??<br> PLEASEEE HEELPPP
    11·2 answers
  • The volume of a gas is decreased from 100 liters at 173.0°C to 50 liters at a constant pressure. After the decrease in volume, w
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!