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jin
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jin
Questions (26)
The total pressure in a flask containing air and ethanol at 257C is 878 mm Hg. The pressure of the air in the flask at 257C is
1 answer
476 views
When a student plotted ln [vapor pressure of a gas] vs. inverse Kelvin temperature, she obtained a straight line with a slope
1 answer
460 views
For a primitive cubic unit cell, r=6.0
what is the body diagonal in terms of r, the lattice pt radius
4 answers
498 views
how do you solve this problem??
how much NaOH (in grams) is needed to prepare 546mL of solution. What is the pOH of the solution?
1 answer
429 views
how do you solve this problem??
What is the original molarity of a solution of formic acid (HCOOH) whose pH is 3.26 at
5 answers
7,854 views
Predict whether the following solutions are acidic, basic, or nearly neutral:
a. NaBr, b. K2SO3, c. NH4NO2, d. Cr(NO3). the
4 answers
9,379 views
The pH of a 0.0642 M solution of a monoprotic acid is 3.86. s this a strong acid?
the answer is no, can you explain why??
2 answers
1,166 views
how do you find the equation of a line
knowing (-5,-5) and (-2.-3) so the slope will be 2/3...
1 answer
377 views
A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.2 cm/min. At what rate is the volume
3 answers
1,103 views
he circumference of a sphere was measured to be 78000 cm with a possible error of 050000 cm. Use linear approximation to
1 answer
509 views
The horizontal asymptotes of the curve
y=12x/(x4+1)^(1/4)
4 answers
1,318 views
A street light is at the top of a 16 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 4 ft/sec along a
2 answers
1,311 views
The circumference of a sphere was measured to be 78.000 cm with a possible error of 0.50000 cm. Use linear approximation to
4 answers
1,250 views
se differential, i.e., linear approximation, to approximate (8.4)^(1/3) as follows:
Let f(x)=(x )^(1/3). The linear approximation
2 answers
1,058 views
distinguish between tolerance range and optimal range
1 answer
1,137 views
lithium + gold(III) chloride +lithium chloride + gold
need to balance equation
4 answers
4,243 views
Describe and evaluate President Eisenhower’s policy regarding Joseph McCarthy.
2 answers
527 views
What is the density of CH4 gas at 32.7 degree celsius and 109kPa? The molar mass of CH4 is 16.042g/mol.
3 answers
473 views
Carbon monoxide, CO and hydrogen, H2, react accordingly:
4CO(g)+9H2(g)-->C4H10(g)+4H2O What volume of the EXCESS REACTANT remains
2 answers
619 views
It takes 19.6 mins for a 10.0mL sample of an unknown gas to effuse through a pinhole.
A 10.0mL sample of He, required 5.05mins.
2 answers
613 views
LAST QUESTION:
When solid NH4NO3 decomposes, a mixture of gases is obtained: 2 NH4NO3(s)--> 4H2O(g) + O2(g) + 2 N2(g) In an
3 answers
1,490 views
if a college student went into the lab and produced 45 grams of Na2CO3, what is percent yield of this trial?
1 answer
398 views
A girl with a 69.2 g yo-yo is swinging it in a horizontal circle at an angular velocity of 6.55 rad/s. If the string is tilted
3 answers
556 views
Find the mass of liquid water required to absorb 4.81×104 kJ of heat energy on boiling.
Answer in units of g.
4 answers
908 views
Consider the fifferential equation dy/dx=(3-y)cosx.Let y=f(x)be the particular solution to the differential equation with the
3 answers
2,154 views
What are the main themes and underlying messages portrayed in The Heroes of Olympus series by Rick Riordan that make it a unique
1 answer
210 views
Answers (10)
whats the answer
Jin Jimin j hope
Jimin Jimin
idonknow
n juice
-20m/s is the acceleration
ghgohi
Because the stories are often well done, or people look to get some eye-candy; or even just look at all the productions their favorite "idol" or "actors" are in. :)
Y < 4x so when x = 1 then y
for dB/dt, i got -295 is that correct? so i just plug it in to find dH/dt?
