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Physical Sciences
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Questions (453)
How many grams of helium must be added to a balloon containing 8.00 g of helium gas to double its volume. Assume no temp or
4 answers
asked by
Lilli
1,771 views
"Calculate the enthalpy of vaporization of water given that, when 5.00 grams of steam (gaseous H2O) at 100°C was introduced
4 answers
asked by
Tristan
1,828 views
It is possible to determine the ionization energy for hydrogen using the Bohr equation. Calculate the ionization energy for an
5 answers
asked by
Jeimmy Vinueza
9,279 views
Tarzan swings through the jungle by hanging from a vine. At the lowest point of a swing, Tarzan's acceleration is....
A. zero B.
4 answers
asked by
sam
2,632 views
The specific heat of toluene, C7H8, is 1.13 J/g K. How many joules of heat are needed to raise the temperature of 30.0 g of
4 answers
asked by
Emily
2,058 views
Mars has a radius of about 0.53 Earth radius and a mass of only 0.11 Earth mass. Estimate the acceleration due to gravity on
4 answers
asked by
josh
2,671 views
How much energy must be absorbed by 20.0 g of water to increase its temperature from 283.0 degrees c to 303.0 degrees c
4 answers
asked by
Sade
4,049 views
A puddle filled with 20. kg of water is completely frozen to -6.0 degrees celcius in the middle of winter. How much heat must be
4 answers
asked by
trav
1,558 views
If milk has a density of 1.03 g/mL, what is the mass of 6.00 qt, reported in kilograms?
4 answers
asked by
HARSHIN
4,025 views
what is the mass in kilograms of 750 mL of a substance that has a density of 0.930 g/mL?
5 answers
asked by
porsh
1,605 views
Granite has a specific heat of 800 J/g∙°C. What mass of granite is needed to store 150,200 J of heat if the temperature of
4 answers
asked by
✖️=🫂
2,036 views
Over a time interval of 1.98 years, the velocity of a planet orbiting a distant star reverses direction, changing from +21.9
4 answers
asked by
Amena
1,075 views
A scientist is working with
1.3m of gold wire. How long is the wire in millimeters? Be sure to include the correct unit in your
7 answers
asked by
t
3,034 views
Determine the amount of heat needed to raise 20.0 g of ice at 0 degrees C to steam at 100 degrees C. (ΔHfusion = 334 J/g;
5 answers
asked by
shae
2,635 views
An auto race is held on a circular track. A car completes one lap in a time of 19.2 s, with an average tangential speed of 39.8
4 answers
asked by
Loweri
2,218 views
Consider three one-liter flasks labeled A, B, and C filled with the gases NO, NO2, and N2O, respectively, each at STP.
Which
4 answers
asked by
Anonymous
1,316 views
The melting point of indium is 156.2°C. At 323°F, what is the physical state of indium?
4 answers
asked by
Anonymous
186 views
How much heat would be released by the condensation of 5.40 g of steam at 100 °C and the subsequent cooling of the water to 25
7 answers
asked by
jason
4,551 views
it asks for a one sentence
rule about relationship between phase changes and temperature and rule about phase change and heat
2 answers
asked by
bellas mom
594 views
which of the following is a example of heat transfer by radiation?
a. wind currents b. a pot of water boiling on the stove c. a
6 answers
asked by
somebody help i am new
3,407 views
Physical therapists know as you soak tired muscles in a hot tub, the water will cool down as you heat up. If a 68.1 person at
4 answers
asked by
DariaV
776 views
If air at sea level with a temperature of 27degrees C is forced up a mountain slope and the air's dew point at the condensation
4 answers
asked by
Jill
3,176 views
An electron weighs about 10^(-27) grams, and a raindrop weighs about 10^(-3).
a raindrop is 24 times heavier than an electron. an
4 answers
asked by
Kim
1,672 views
An ideal gas has a pressure of 2.5 atm, a volume of 1.0 L at a temperature of 30.°C. How many molecules are there in the gas?
6.
4 answers
asked by
Lola
4,598 views
A runner hopes to complete a 10,000 m race in a time of 30
minutes. After running at a constant speed for exactly 27 minutes,
3 answers
asked by
jane john
1,099 views
which graph might show the temperature during a 24-hour period
4 answers
asked by
sebastian chapa
473 views
Is this EXTENSIVE OR INTENSIVE?
1. number of calories in 10 grams of sugar. 2. Percentage of alcohol in a beer. 3. Electrical
4 answers
asked by
Pia
1,178 views
1. Given that 50 grams of ice is heated at -20.0 °C to steam at 135.0 °C.
i. Show the graph of the changes from ice to steam
4 answers
asked by
bliss
4,548 views
A balloon contains 10.0g of neon gas. With T kept constant, 10.0g of argon gas is added, and the volume of the balloon expands
3 answers
asked by
Parkin
2,177 views
The temperature of a pan of hot water varies according to Newton's Law of Cooling: dT/dt= -k (T - A), where T is the water
4 answers
asked by
Alice
2,721 views
Calculate ∆H°rxn for the following reaction at 298 K.
SiH4(g) + 2O2(g) SiO2(g) + 2H2O(l)
3 answers
asked by
MIZA
490 views
In 6.20 hours, a 100-gram sample of11247Ag decaysto 25.0 grams. What is the half-life of11247Ag?
3 answers
asked by
Anonymous
749 views
What amount of energy is required to com-
pletely ionize 26.9 grams of carbon atoms in the gas phase (C(g)) if the ionization
2 answers
asked by
cheri
635 views
A swimming pool with a surface area of 5
meters by 10 meters contains 88,000 liters of water. The temperature of the water in
3 answers
asked by
Agnes
1,101 views
calculate the value of g at a height of 3600 km above the surface of the earth?
4 answers
asked by
aish
2,083 views
the mass density of a mixture of ethyl alcohol and water is 950kg/m^3. is the mixture mostly water, alcohol, or about half and
2 answers
asked by
tiffany
608 views
Kg is what unit of measurement
3 answers
asked anonymously
25 views
How much heat is required to heat 19 g of solid silver from 100 ◦C to liquid silver at 961◦C? The specific heat of solid
3 answers
asked by
gabriella
1,326 views
What is spectroscopy used for?
3 answers
asked by
hdfasdasddada
82 views
What is the total energy transfer(in KJ) when 10.00 pounds of water vapor at 110 degrees C becomes ice at 253K? Assume that the
3 answers
asked by
Tyler
336 views
A block has length 9.50 mm, width 10.25 mm, and height 50.80 mm. If its mass is 38.7323 grams, what is
its density in grams/cm3?
3 answers
asked by
Mridul
350 views
The SI unit of measure for length the meter would be most appropriate when
4 answers
asked by
Anonymous
403 views
A calorimeter contained 75g of water at 16.95 degree Celsius. A 93.3g Iron at 65.58 degrees celsius was placed in it, giving a
4 answers
asked by
help
1,452 views
the temperature dropped 3 degrees for 9 hours straight what is the total temperature change during the 9 hours
3 answers
asked by
leslie
1,204 views
A gas has a pressure of 5.7ATM at 100.0 C what is the pressure at 20.0 C? (assume voulme is unchanged)
3 answers
asked by
olivia
391 views
Calculate the total heat (in Joules) needed to convert 1.602 x 101 grams of ice at -1.383oC to liquid water at 8.554 x 101oC.
Mel
3 answers
asked by
Devin
595 views
How much heat is required in order to change 5 g of ice at -15 degree to steam at 150 degree?
3 answers
asked by
joan
3,813 views
Find the heat that flows in 1 s through a lead brick 18 cm long if the temperature difference between the ends of the brick is
3 answers
asked by
Anonymous
846 views
a student wanted to know how his weight on mars would compare with his weight on earth. prentend that traveling to mars is
1 answer
asked by
lakia
394 views
calculate the amount of heat (kcal) released when 50.0 g of water at 100degrees Celsius hits the skin and cools to a body
2 answers
asked by
d
1,173 views
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