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liraira [26]
3 years ago
11

PLZ HELP MEEE PLZ WILL GIVE BRAINLIEST PLZ!

Chemistry
1 answer:
AfilCa [17]3 years ago
7 0
Prolly top left because it’s at the top. But I’m not positive because I haven’t took the whole quiz or assignment.
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Why brain remembers picture better than words?​
mojhsa [17]

Answer:

your brain processes ever detail in a picture rather than words for for example a picture of something words doesn't describe it as well as the picture could.

5 0
3 years ago
Read 2 more answers
An ideal gas sealed in a rigid 4.86-L cylinder, initially at pressure Pi=10.90 atm, is cooled until the pressure in the cylinder
seraphim [82]

Answer:

\Delta H=-11897J

Explanation:

Hello,

In this case, it is widely known that for isochoric processes, the change in the enthalpy is computed by:

\Delta H=\Delta U+V\Delta P

Whereas the change in the internal energy is computed by:

\Delta U=nCv\Delta T

So we compute the initial and final temperatures for one mole of the ideal gas:

T_1= \frac{P_1V}{nR}=\frac{10.90atm*4.86L}{0.082*n}=\frac{646.02K  }{n} \\\\T_2= \frac{P_2V}{nR}=\frac{1.24atm*4.86L}{0.082*n}=\frac{73.49K  }{n}

Next, the change in the internal energy, since the volume-constant specific heat could be assumed as ³/₂R:

\Delta U=1mol*\frac{3}{2} (8.314\frac{J}{mol*K} )*(73.49K-646.02K )=-7140J

Then, the volume-pressure product in Joules:

V\Delta P=4.86L*\frac{1m^3}{1000L} *(1.24atm-10.90atm)*\frac{101325Pa}{1atm} \\\\V\Delta P=-4756.96J

Finally, the change in the enthalpy for the process:

\Delta H=-7140J-4757J\\\\\Delta H=-11897J

Best regards.

7 0
4 years ago
what ph indicator is added to the simmons citrate agar? group of answer choices phenol red methylene green bromothymol blue litm
NikAS [45]

The most common pH indicator used in Simmons Citrate Agar is Bromthymol Blue (BTB)

Simmons Citrate Agar is a selective and differential medium used for the detection and differentiation of Enterobacteriaceae (gram-negative bacteria).

The medium contains sodium citrate as the sole carbon source, which is used to differentiate organisms based on their ability to utilize citrate as a sole carbon source.

The medium also contains pH indicators that change color based on the pH of the medium. The most common pH indicator used in Simmons Citrate Agar is Bromthymol Blue (BTB).

BTB is a pH indicator that turns yellow in acidic conditions and blue in basic conditions. As the bacteria metabolize the citrate in the medium, they produce acids, which cause the medium to become acidic.

This change in pH is detected by the BTB, which changes color from blue to yellow. The yellow coloration of the medium is an indication that the organism is utilizing citrate as a sole carbon source.

To know more about agar, click below:

brainly.com/question/4634808

#SPJ4

7 0
1 year ago
An engineer has created a new design for the pipe systems in homes. In this design, pipes are joined together with flexible conn
geniusboy [140]

Answer:

earthquakes

Explanation:

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3 years ago
What is the Hercules beetle’s scientific name?
I am Lyosha [343]

Answer:

Hercules beetles, Dynastes hercules, occur in the new world tropics of Central and South America.

Explanation:

The southern Mexican border to west central Bolivia represent the species' northern and southern limitations, respectively.

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