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
Ksju [112]
2 years ago
13

How do I do this I need answers fast

Chemistry
1 answer:
MA_775_DIABLO [31]2 years ago
7 0
1.8 would be the top Sig fig
You might be interested in
If you were preparing a defined, minimal medium for an aerobic, chemolithotrophic bacterium to grow on, which of the following c
Eddi Din [679]

Answer:

I believe it's D. FE2+ and MgCl2...

Explanation:

Hope this helps!!

7 0
2 years ago
Which cannot be chemically broken down into simpler substances?
Anna71 [15]

Answer:

B.

Explanation:

elements

6 0
2 years ago
Read 2 more answers
Consider the following reaction: CO(g)+2H2(g)⇌CH3OH(g) Kp=2.26×104 at 25 ∘C. Calculate ΔGrxn for the reaction at 25 ∘C under eac
valentinak56 [21]

Answer : The value of \Delta G_{rxn} is, 8.867kJ/mole

Explanation :

The formula used for \Delta G_{rxn} is:

\Delta G_{rxn}=\Delta G^o+RT\ln Q   ............(1)

where,

\Delta G_{rxn} = Gibbs free energy for the reaction

\Delta G_^o =  standard Gibbs free energy

R = gas constant = 8.314 J/mole.K

T = temperature = 25^oC=273+25=298K

Q = reaction quotient

First we have to calculate the \Delta G_^o.

Formula used :

\Delta G^o=-RT\times \ln K_p

Now put all the given values in this formula, we get:

\Delta G^o=-(8.314J/mole.K)\times (298K)\times \ln (2.26\times 10^{4})

\Delta G^o=-24839.406J/mole=-24.83\times 10^3J/mole=-24.83kJ/mole

Now we have to calculate the value of 'Q'.

The given balanced chemical reaction is,

CO(g)+2H_2(g)\rightarrow CH_3OH(g)

The expression for reaction quotient will be :

Q=\frac{(p_{CH_3OH})}{(p_{CO})\times (p_{H_2})^2}

In this expression, only gaseous or aqueous states are includes and pure liquid or solid states are omitted.

Now put all the given values in this expression, we get

Q=\frac{(1.4)}{(1.2\times 10^{-2})\times (1.2\times 10^{-2})^2}

Q=8.1\times 10^{5}

Now we have to calculate the value of \Delta G_{rxn} by using relation (1).

\Delta G_{rxn}=\Delta G^o+RT\ln Q

Now put all the given values in this formula, we get:

\Delta G_{rxn}=-24.83kJ/mole+(8.314\times 10^{-3}kJ/mole.K)\times (298K)\ln (8.1\times 10^{5})

\Delta G_{rxn}=8.867\times 10^3J/mole=8.867kJ/mole

Therefore, the value of \Delta G_{rxn} is, 8.867kJ/mole

3 0
3 years ago
What is 450 g of flour a measure of?
Marat540 [252]
The right answer is D - mass.
3 0
3 years ago
Read 2 more answers
3)
TiliK225 [7]

Answer: A) Sodium Na and Magnesium Mg

Explanation:

In the period table, you can see that Sodium (group 1) has 11 protons, and Magnesium (group 2) has 12 protons. 11+12=23 protons

5 0
3 years ago
Other questions:
  • What basic law of chemical reactions do nuclear reactions break
    9·1 answer
  • A 5.0-gram sample of Fe(s) is to be placed in 100. milliliters of HCl(aq). Which changes will result in the fastest rate of reac
    6·1 answer
  • How did the gold foil experiment lead to the discovery of the nucleus?
    10·1 answer
  • PLZ HELP!!! ILL MARK BRAINLIEST!!! Would you consider the practice of "ghost hunting” to be closer to science or pseudoscience,
    6·1 answer
  • Unknown element X is a metal that ionically bonds to sulfur. Is the formula, X3S feasible? Why or why not?
    7·2 answers
  • How many grams are in 6.8L of Oxygen gas (O2) at STP
    15·1 answer
  • The elements on the Periodic Table of the Elements are arranged in order of increasing
    12·2 answers
  • How many moles are in 25.0 grams of HF?
    6·2 answers
  • The motion of objects can be quite complex. The motion of this frog is an example. Suppose that the frog moves from one lily pad
    7·1 answer
  • 100 points! please help me will mark brainliest
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!