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Physical Sciences
Page 3
Questions (453)
A soccer ball of diameter 30 cm rolls without slipping at a linear speed of 3.1 m/s. Through how many revolutions has the soccer
3 answers
asked by
Tin
777 views
How much heat (in g ) is evolved in converting 1.00 of steam at 145.0 to ice at -45.0? The heat capacity of steam is 2.01 and of
4 answers
asked by
sara
1,094 views
How much energy is released when 2.55kg of diethyl ether freezes?
5 answers
asked by
janny
2,324 views
which of the two systems inin figure 4 do you think will need the largest motor
3 answers
asked by
tau
79 views
what is the mass of 200 mL of glucose solution with a density of 1.15 g/mL ?
3 answers
asked by
Anonymous
310 views
Given the following reaction that has an enthalpy of +128 kJ.
CH3OH(l) ---> CO(g) + 2H2(g) How many kJ of heat are consumed when
3 answers
asked by
Cerina
567 views
An unknown gas at 25.1 ∘C and 1.00 atm has a molar mass of 16.04 g/mol. Assuming ideal behavior, what is the density of the
3 answers
asked by
ChemGal
704 views
A camel can carry a maximum weight equal to either 18 identical large jugs of water of 30 identical small jugs of water if the
3 answers
asked by
Ah
629 views
a cylinder filled with a movable Piston contains liquid water in equilibrium water vapour at 25 degree Celsius which one of the
4 answers
asked by
m
1,902 views
How do you think this relates to fireworks? In your explanation be sure to use the following key terms:
Ground state Excited
5 answers
asked by
Jacob Harver
836 views
The magnetic moment (mu) values for
Cs2 (MnCl4), k4 (Mn (CN) 6) and K2 (Ni (CN) 4) are 5.9 , 1.8 and 0 B.M, respectively. Explain
3 answers
asked by
Munavvar
687 views
A 27 g ice cube at −25◦C is dropped into a
container of water at 0◦C. How much water freezes onto the ice? The specific
3 answers
asked by
Ion
1,694 views
The ionization energy of Fe is 434 kJ/mol. What is the maximum wavelength of light capable of ionizing Fe? What type of light is
3 answers
asked by
Mahnoor
559 views
A syringe containing 1.65mL of oxygen gas is cooled from 91.3∘C to 0.5∘C.
What is the final volume of oxygen gas? I got
3 answers
asked by
Anonymous
1,197 views
The air pressure on Pikes Peak in Colorado is approximately 600 millibars. What is the relationship between air pressure at the
4 answers
asked by
mike
2,479 views
how many joules of energy are needed to change 275 g of water from 15 degrees C to steam at 100 degrees C
4 answers
asked by
Anonymous
1,808 views
Which requires more energy: to raise 1 kg of liquid water from 0 to 100 degrees (Celsius) or to turn that water to steam after
3 answers
asked by
Anon
643 views
At 1 atm, how much energy is required to heat 49.0 g of H2O(s) at –12.0 °C to H2O(g) at 169.0 °C?
3 answers
asked by
yas
1,196 views
an oxygen storage tank contains 12l at 25 degrees C and 3 atm.After a 4 L canister of oxygen at 25 degrees C and 3atm is emptied
3 answers
asked by
linda
653 views
You have a 46.0 G sample of H20 at a temperature of -58.0*C. How many joules of energy are needed to heat the ice to 95.3*C?
2 answers
asked by
Joel
689 views
Janice found two sea shells when she went to the beach. They appear to be almost the same size, but they have different shapes.
2 answers
asked by
Sara HELP ME PLEASE
1,071 views
Consider a copper lattice with an excessive average of one vacancy in every 100 unit cells. What will be its density? Compare
3 answers
asked by
Bob
1,367 views
what is the volume of a piece of wood that haas a mass of 6 g and a density of 0.5 g/mL?
3 answers
asked by
Anonymous
330 views
a very small gas bubble seen in a microscope has a diameter of 1 micrometer. If the pressure is one bar and the temperature is
4 answers
asked by
emoni
1,260 views
An engineer claims to have measured the characteristics of a heat engine that takes in 130J of thermal energy and produces 40J
4 answers
asked by
Mike
1,751 views
After a baseball is thrown describe the relationship between potential and kinetic energy
3 answers
asked anonymously
33 views
Crushed ice, at -25 digrees was heated using a bunsen burner. The temperature was recorded over a period of 16 minutes. Between
3 answers
asked by
Anonymous
554 views
Please explain the process of diffusion.
3 answers
asked by
Amir
546 views
calculate the densities of each of the following gases in g/L at STP:
a. F2 b. CH4 c. Ne d. SO2
3 answers
asked by
Jetta
986 views
Compare two reactions, one requiring the simultaneous collision of three molecules and the other requiring a collision between
3 answers
asked by
Jon
701 views
Which of these pressures is the lowest? 1.1 atm, 16.7 psi, 740 mm Hg, 111 458 Pa
5 answers
asked by
carmen
3,030 views
How much heat is necessary to vaporize 100 g of water at 100 °C to form steam at 100 °C?
4 answers
asked by
Anonymous
1,243 views
Convert 4.3 kPAxmm^3xs^-1 to mJxs^-1
3 answers
asked by
Jesu
2,184 views
What describes how elements of nature will behave under specific conditions but not why they happen?
a. theory b. hypothesis c.
2 answers
asked anonymously
20 views
In three sentences, explain a similarity and a difference between the particles in liquid water at 100ºC and the particles in
4 answers
asked anonymously
117 views
Which phase change is the opposite of boiling?
2 answers
asked anonymously
118 views
Which one of these systems has the most negative charge?
a) 2 electrons b) 2 electrons, 2 protons c) 5 electrons d) 5 electrons,
2 answers
asked by
-
47 views
An essay of 1500 words of electricity, energy and power: relations and differences
2 answers
asked by
Aaron
55 views
In which example do the particles in water have the most kinetic energy?
A. a heated swimming pool B. steam rising a kettle C. a
7 answers
asked by
Connexus Student 1472
45 views
True or false:-
Water is used for transportation.
1 answer
asked by
TSADIKU
48 views
what is nanoscience.
1 answer
asked by
Rondezy
60 views
Which is closest to h, the height in feet Gina should use for the ramp according to her design?
1 answer
asked by
Matthew
49 views
How is home economic related to chemistry
1 answer
asked by
Folarin
59 views
How is chemistry related to home economic
1 answer
asked by
Delight
66 views
what area of science compares and describes quantities and movement of matter in energy
1 answer
asked by
Jaylyn
55 views
A girl of 10kg sit on a chair for 20 mins. Determine his weight?
1 answer
asked by
Anonymous
152 views
Express the diameter of a carbon atom, 0.00000000022 m, in scientific notation.
A. 0.22 x 10^-9 m B. 2.2 x 10^-10 m C. 2.2 x
1 answer
asked by
aidan
212 views
I need a large sentence for cold
1 answer
asked by
Bissmah
230 views
Isn't part of my homework, but I'm curious-
Does water evaporate faster from a body of water with a bigger surface area?
1 answer
asked by
Anonymous
407 views
We know from literature that a certain material “A” exhibits an electrical conductivity of σ=100 S/cm at room temperature.
4 answers
asked by
wazowski
436 views
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