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Physical Sciences
Page 8
Questions (453)
calculate density of atoms in(001) in Lithium
answer in units of atoms/cm2
3 answers
asked by
himani
491 views
If instead, the swimmer makes 93.5 laps in the same pool in 4 h, determine the total distance the swimmer traveled, the
2 answers
asked by
Anonymous
506 views
The specific heat of a gas is found to be 0.075 calories at constant volume and its formula Wt . is 40. the atomicity of the gas
2 answers
asked by
hriday
498 views
If 689000 J of energy are added to 4.00 L of
water at 284 K, what will the final temperature of the water be? Answer in units of
1 answer
asked by
Danny
475 views
According to the phase diagram for water, how is the state of water determined?
proceed up a vertical line at any given
2 answers
asked by
Anonymous
486 views
What is the total number of orbitals having n = 5 and ℓ = 3?
A. 3 B. 5 C. 7 D. 9 E. 10
1 answer
asked by
Ninaya
450 views
Can someone please explain how to tackle this problem?
Cu - Anode electrode Zn - Cathode electrode A current of 2 amps is
1 answer
asked by
Sarah
473 views
The force of repulsion between two like - charged particles will increase if:
The distance between the charged particles is
1 answer
asked anonymously
46 views
Your x-ray lab has a monochromator consisting of a single crystal of nickel cut so that the (001) plane lies in the cube face.
1 answer
asked by
Roxy333
470 views
A 32.0-g sample of water at 290. K is mixed with 51.0 g water at 310. K. Calculate the final temperature of the mixture assuming
1 answer
asked by
David
456 views
A copper sheet of thickness 2.09 mm is bonded to a steel sheet of thickness 1.35 mm. The outside surface of the copper sheet is
1 answer
asked by
maria
457 views
In a calorimeter can whose behaves thermally is.if it were equivalent with 40g of water
1 answer
asked by
Daniel
492 views
A 50-mL Mohr buret is connected to a 1-ft length of capillary tubing. The buret is then filled with water and the volume of
1 answer
asked by
anonymous
480 views
A sample of helium has a volume of 4.86 x 102 mL at STP. What will be its new volume if the temperature is increased to 341 K
1 answer
asked by
Veronica
450 views
Calculate the value of theshielding constant if the first ionosaton energy of Helium is 3.98x10ᴧ -19 J/mol
1 answer
asked by
Roderick
439 views
What is the final equilibrium temperature
when 7 g of milk at 5�C is added to 117 g of coffee at 68�C? Assume the specific heats
1 answer
asked by
Ted
468 views
I cannot figure this out. It seems so simple, and I should know it.
The density of tungsten is 19.3g/cm^3 Express this value in
3 answers
asked by
Casey
457 views
What pressure (atm) is needed to confine an ideal gas to 68.0 L after it has expanded from 44.0 L and 2.3 atm at constant
3 answers
asked by
Lena
460 views
How much energy, in calories, will be required to evaporate 125.0 mL of ethanol at its boiling point?
Given: Density 0.818 g/mL
1 answer
asked by
Brooke
445 views
Hot air balloons
If the hot air balloon shown is in the shape of a spehere, what is it's radius? Hint: v=15,000 cubic feet.
1 answer
asked by
Milana
446 views
Why are metals good conductors of heat and electricity? Does it have to do with their valence electrons or the atomic packing
1 answer
asked by
Kim
444 views
Gail ran the 100m dash in 10.74 seconds. How many Km per hour is this?
3 answers
asked by
Julie
426 views
Create me a short learning objectives about matter
1 answer
asked anonymously
31 views
What is the role of density changes in a convection cycle?
1 answer
asked by
josie
40 views
An athlete is practicing shotput using a 16-pound shot, and he throws it 40 feet. He then uses a 12-pound shot and throws it 50
1 answer
asked anonymously
87 views
The gallium in the image is melting in the person’s hand. Which changes will occur on a microscopic level?
(1 point) Responses
1 answer
asked anonymously
36 views
A scientist is interested in learning more about water’s phase change properties. The scientist decides to perform an
1 answer
asked anonymously
32 views
A scientist is interested in learning more about water’s phase change properties. The scientist decides to perform an
1 answer
asked anonymously
31 views
A student uses a magnet to place a picture on the refrigerator door. Which statement explains how the magnet is able to stick to
1 answer
asked anonymously
56 views
Which has greater heat capacity is it iron, tin or bismuth?
1 answer
asked anonymously
50 views
Which has the greater heat capacity and iron can or bismuth ? Why do you say this?
1 answer
asked anonymously
28 views
High specific heat means it takes a lot of heat to change the temperature of water. Why is the specific heat of water so high?
It
1 answer
asked anonymously
45 views
Can you explain something from this course to someone who has not yet taken this course??
Chemistry
1 answer
asked anonymously
12 views
Question
Janice holds two negatively charged balloons near each other. What will happen with the balloons?(1 point) Responses The
1 answer
asked anonymously
41 views
What type of signal is measured in a sonar system to determine the depth of the ocean?
A. absorption of sound waves by underwater
4 answers
asked by
Dayana
454 views
A climber is climbing a mountain. He is hanging from the bottom of a pair of anchors forming a Y shape at an angle θ.
What is
1 answer
asked by
umma
454 views
When two identical ions are separated by a distance of 4.0×10^−10 , the electrostatic force each exerts on the other is
1 answer
asked by
Cassie
449 views
Which has greater heat capacity—iron, tin, or bismuth? Why do you say this?
1 answer
asked anonymously
38 views
Which of the following lists the electrostatic forces in order from strongest to weakest?
A) hydrogen bond, dipole-dipole, van
1 answer
asked anonymously
36 views
When doing a density test (measuring the density of objects, regular and irregular shapes), describe one error that could happen
1 answer
asked anonymously
30 views
A rigid steel tank contains 100 moles of nitrogen gas at 320K and
1.00 bar pressure. The tank is heated until the pressure is
1 answer
asked anonymously
44 views
Atoms and molecules are constantly in motion. The more kinetic energy atoms or molecules have, the faster they move about. In
1 answer
asked anonymously
47 views
What is Astronomy
1 answer
asked anonymously
8 views
A sample of nitrogen gas is at 37°C (99°F). If heat is removed from the sample, its temperature will _______, and it could
1 answer
asked by
chas
22 views
what would decrease the gravitational pull between the sun and earth?
a. if the sun was twice its size b. if the sun was farther
1 answer
asked anonymously
21 views
A strand of hair has an average mass of 2.17 X 10/5 ounces
A strain of rice has a mass of 0.002 ounces how much heavier is the
1 answer
asked anonymously
20 views
Writing at least three sentences, makes a comparison between what happens with the red dye in the water bin with what happens to
1 answer
asked by
Gunge Lord
22 views
Which of the following situations are an example of an object experiencing both a physical change in color followed by a
1 answer
asked anonymously
21 views
Which of the following questions shows a chemical change nh3g to NH3 ic3 h8 + 50 2
1 answer
asked by
Me
10 views
Why are sublimation and deposition unusual changes of state?
1 answer
asked by
Elena
20 views
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