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
wariber [46]
2 years ago
9

PLEASE HELP! WILL GIVE BRAINLIEST:

Chemistry
1 answer:
Ad libitum [116K]2 years ago
5 0

2.45 °C

From the Ideal gas law (Combined gas law)

PV/T = P'V'/T' .....eq 1

Where:

P - initial pressure

V - initial volume

T - initial temperature

P' - final pressure

V' - final volume

T' - final temperature.

To proceed we have to make T the subject from eq.1

Which is, T = P'V'T/PV.......eq.2

We have been provided with;

Standard temperature and pressure (STP)

P = 760 mm Hg (SP - Standard Pressure)

T = 273.15 K (ST - Standard Temperature)

V = 62.65 L

P' = 612.0 mm Hg

V' = 78.31 L

T' = ? (what we require)

Therefore, we substitute the values into eq.2

T' =

.

T' = 275.60 K

T = (275.60 - 273.15) ......To °C

T = 2.45 °C

>>>>> Answer

Have a nice studies.

You might be interested in
Geologists use the decay of potassium-40 in volcanic rocks to determine their age. Potassium-40 has a half-life of 1.26 109 year
melomori [17]

Answer:

m_{o} \approx 3.247\times 10^{-7}\,g

Explanation:

The mass of radioactive isotope at a certain time is given by the following expression:

m(t) = m_{o}\cdot e^{-\frac{t}{\tau} }

Time constant can be calculed in terms of half-life:

\tau = \frac{t_{1/2}}{\ln 2}

\tau = \frac{1.26\times 10^{9}\,yr}{\ln 2}

\tau = 1.818\times 10^{9}\,yr

The initial mass is:

m_{o} = \frac{2.73\times 10^{-7}\,g}{e^{-\frac{3.15\times 10^{8}\,yr}{1.818\times 10^{9}\,yr} }}

m_{o} \approx 3.247\times 10^{-7}\,g

8 0
3 years ago
Which of the following is not the same as 0.00684 kg?
olchik [2.2K]

kg and all the given units are units used to measure mass.

kg is the standard unit to measure mass

lets find the value of 0.00684 kg in all the given units

a. dkg

1 kg is equivalent to 100 decagram (dkg)

therefore 0.00684 kg is = 100 dkg/kg x 0.00684 kg = 0.684 dkg

this is not the given value therefore this choice is incorrect

b. 1 kg is equivalent to 1000 g

therefore 0.00684 kg = 1000 g/kg x 0.00684 kg = 6.84 g

this is the given value so this is correct

c. 1 kg is equivalent to 100 000 centigrams (cg)

therefore 0.00684 kg = 100 000 cg/kg x 0.00684 kg = 684 cg

this is the given value so this is also correct

d) 1 kg is equivalent to 1 000 000 mg

therefore 0.00684 kg = 1 000 000 mg/kg x 0.00684 kg = 6 840 mg

this too is correct

the incorrect answer is A. 0.0684 dkg

5 0
3 years ago
Read 2 more answers
Element X has an electron configuration that ends with 5p6. Which of the following describes this atom correctly?
pishuonlain [190]
The answer is d noble gas because the very last column on the periodic table is all the noble gases
7 0
4 years ago
Have you ever tried to mix sugar with a cold drink like tea or lemonade? What happened? Explain why.
Vinvika [58]

Answer:

yes

Explanation:

it wont dissolve because when water is cold its molecules dont separate

5 0
3 years ago
Define all the physical features of earth​
Aleks [24]

<h3>The features discussed are: Plateaus, deserts, deltas, mesas, basins, foothills, marshes, and swamps. Plateaus are elevated regions that are flat on top. Deserts are large areas that receive less than 10 inches of precipitation a year. Antarctica is the world's largest desert.Geography Landforms & Physical Features. Our Earth is made up of a many different types of landforms. ... Mountains. Mountains are large, tall, and elevated land areas on the earth's surface that rise abruptly from the surrounding land area. .</h3>

<h2>hope it helps</h2><h2>stay safe healthy and happy.....</h2>
5 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following materials is not a colloid
    5·2 answers
  • The equilibrium constant for the reaction 2NO(g)+Br2(g)⥫⥬==2NOBr(g) is Kc=1.3×10−2 at 1000 K. At this temperature does the equil
    6·2 answers
  • I need help with this definitions!!!
    7·1 answer
  • 6.002cm= what to sig figs
    6·1 answer
  • Sort these elements into pairs that would most likely exhibit similar chemical properties.
    15·1 answer
  • Look at the image below:
    5·1 answer
  • Drinking water should have sufficiently low levels of____
    12·1 answer
  • Which of the following correctly represents the radioactive decay of cesium-137?<br><br>​
    14·1 answer
  • H3PO4 what’s the name?
    11·2 answers
  • Silver Nitrate &amp; Potasiumbromide​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!