Answers created by Junaid Mirza
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How to do and understand this Specific Heat question?
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Question number 5 how can i solve the question ?
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What is the final temperature of water if 50.5 grams was water, initially at 35 degrees Celsius, that absorbed 800 J of energy?
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3. If a 3.1 g ring is heated using 10.0 J, it’s temp. rises by 17.9C. Calculate the specific heat capacity of the ring. Is the ring pure gold?. (specific heat for pure gold = 0.23 J/(gC).
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The amount of heat required to raise the temperature of a substance of mass is given by Q=mcA(temperature simbol). Derive the units of c?
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How many atoms are required to form a molecule?
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What is the order of the numbers from Least to Greatest?
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7/2 kg to g ?
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When 435 J of heat is added to 3.40 g of olive oil at 21.0°C, the temperature increases by 85°C. What is the specific heat of the olive oil?
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What formula of moment of inertia Solid cylinder about an axis passing through central diameter and central axis ?
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Determine the value of #E^@#?
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What is the pressure of a gas if you compressed the gas from its original 500 mL at 3.4 torr to a volume of 302 mL?
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If the temperature is 65°F outside, what is the temperature in degrees Celsius?
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What is the area of a rectangle if the width measures 3 centimeters and the length measures 9 centimeters?
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Which atom in the ground state has the same electron configuration as a calcium ion, #Ca^(2+)# in the ground state?
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If y varies directly with x, and if x = 7.5 when y = 10, how do you find x when y = 4?
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Is ammonia an element or compound ? and why it is element or compound?
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The rate constant is k =2.30×10^-3 s^-1. The concentration is 0.150 M, what will the concentration be after 15.0 minutes?
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A rectangle has an area of 12 square centimeters and a perimeter of 16 centimeters. Which of the following could be its dimensions?
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Calculate the mass of 1.05x10^26 atoms of neon. ?
please show steps
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Calculate how much energy must be added to 50.0g of water to raise its temperature from 40.0 degrees Celsius to 45.0 degrees Celsius?
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What element has symbol of K?
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How many carbons are there in #CH_3COOH#?
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A system receives 525 J of heat and delivers 525 J of work to its surroundings. What is the change in internal energy of the system?
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50 km/hr = __?__ m/s
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50 km/hr = __?__ m/s
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What is the force, in terms of Coulomb's constant, between two electrical charges of #14 C# and #29 C# that are #4 m # apart?
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Why is the charge of Fe in the complex ion #"K"_4["Fe(C"_2"O"_4")"_3] color(white)(.) +2#?
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How many grams are in 2.50 moles of #"H"_2"O"# ?
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What is the electric current produced when a voltage of #24 V# is applied to a circuit with a resistance of #14 Omega#?
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What is the volume of 22 moles of oxygen gas at STP?
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How do you simplify #\sqrt { 289x ^ { 4} y ^ { 16} }#?
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What are 5 types of chemical reactions?
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Molar mass of #K _2 O _2# ?
K molar mass 39.10
O molar mass 16.00
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What type of reaction does this equation represent?
2I4O9(s) → 4I2(s) + 9O2(g)
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Calculate the mass of a sample of pure silver density of 10.49 g/ml that has a volume of 12.99 ml?
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Gold has a density of 19.3g/ml what is the mass of a 7.5ml sample of gold?
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What is the density of copper if 45g of a copper has a volume of 5.0 ml?
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Find an expression for the area of the shaded region? Now let r= 4 cm, calculate the area?
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25g of a solute of molar mass 250g/molecular is dissolved in 100ml of water to form a. Solution whose density is 1.25 g/ml. The molality is? ( answer =0.8) please solve it.
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How many electrons can an s orbital have?
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What is the molarity of a 2.4-liter solution containing 124 grams of HF?
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Four identical metallic objects carry the following charges: +1.6, +6.2, -4.8, and 9 .c. The object are brought simultaneously into contact , so that each touches the others. Then they are seperated. (a) what is the final charge on each object?
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Evaluate the logarithm.
#log_6 (1/216)#
how?
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A 0.145 kg baseball is thrown with a velocity of 40 m/s. What is the baseball's momentum?
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The mole fraction of NaCI in an aqueous solution is 0.132. How many moles of NaCI are present in 1 moles of this solution?
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You are instructed to make 250 ML of a 1.5 M potassium nitrate solution. How many moles of substance will be present in the solution ?
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A car accelerates uniformly at a rate of 2.8 m/s^2. How long does it take for the car to accelerate from a speed of 12.7 m/s to a speed of 19.3 m/s?
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An object starts from rest and falls freely. What is the velocity of the object at the end of 3.00 seconds?
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A 12 story New York building casts an 80 foot shadow. What is the length of a shadow of a 20 story building?
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A 10,000-watt radio station transmits 535 kHz. What is the number of joules transmitted per second?
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How many moles of CO2 are in a 2 liter balloon at 27ºC at 0.82 atm?
0.00667 moles
0.067 moles
0.67 moles
0.75 moles
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A 50.0 g sample of an unknown substance absorbed 1.64 kJ of energy as it changed from a temperature of 36°C to 98°C. What is the specific heat of the unknown substance in J/g°C?
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Is this numbering on the organic compound which has both alkene and alkyne is correct?
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Given the molar mass of N as 140 g/mol .find the root mean square of the velocity at T=50K?
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How many joules of heat are necessary to melt 500 g of ice at its freezing point?
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If an object is moving at #0 m/s# and accelerates to #60 m/s# over #44/6# seconds, what was the object's rate of acceleration?
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A copper wire has a diameter of #0.5mm# and resistivity of #1.6*10^-8Omegam#. What will be the length of this wire to make its resistance #102Omega#?
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You add 1 Mol of NaCl to 1L of water make a salt water solution. Is your solution a 1M NaCl solution? How do you know?
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Do vertebrates lay eggs?
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At what temperature wwill o.654 moles of neon gas occupy 12.30l at 1.95 atm?
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What is the freezing point depression when sugar is dissolved in water to make a 0.50 molal solution?
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If given 100.0 g of NaOH, how do you determine the amount of moles in it? How many are there?
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At a constant temperature, a gas that exerted a pressure of 1.47 atm and that occupied 1.62 L is compressed until its pressure is 7.42 am. What is the final volume?
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If an object with a mass of #5 kg # changes speed from #5m/s# to #13 m/s#, by how much does its kinetic energy change?
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If a gas sample occupies 4.2 L at a pressure of 101 kPa. What volume will it occupy if the pressure is increased to 235 kPa?
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An organism is described as 2n = 20. How many chromosomes are present in a meiotic metaphase II cell from this organism?
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Fill the blanks #"___"##"H"_2(g) + "O"_2(g) -> "__""H"_2"O"(l)#?
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What is the molarity of a solution that is made by diluting
50.00 mL of a 4.74 M solution of HCl to 250.00 mL?
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The resistance of a 20 cm long wire is 5 ohms stretched to a uniform wire of length 40 cm. What is the resistance of the wire?
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Calculate #DeltaS^Theta# at #25^circC#?
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A stationary ball weighing 0.25 kg aquires a speed of 10m/s when hit by a hockey stick. What is the impulse imparted to ball?
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How much power is produced if a voltage of #6 V# is applied to a circuit with a resistance of #96 Omega#?
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A solid weighs 32 gf in air and 28.8 gf in water. What is the relative density of the solid?
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A solid weighs 32 gf in air and 28.8 gf in water. What is the relative density of the solid?
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What is the capacitance when Q = 60 µC and V = 12 V?
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Which has more kinetic energy, a 4.0 kg bowling ball moving at 1.0 m/s or a 1.0 kg bocce ball moving at 4.0 m/s? Why?
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The perimeter of a triangle is 7 cm. What is its greatest possible area?
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5.6 litre of gas at stp is 11.5 g . name the gas?
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How many grapms of AgNO3 should be dissolved in 20mL H2O to make a 1.0m M AgNO3 solution? Thanks
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A force produces an acceleration of 1.5 m/s^2 in a disk. Three such disks are tied together and the same force is applied on the combination. What will be the acceleration?
(Ans:- 0.5m/s^2)
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Calculate the molefraction of glucose (c6 h2 06) in a solution containing 20 percentage glucose by mass?
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How many d electron are present in cu2+ ion?
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Two forces of magnitude 10and3n are acting at an angle other than zero which of yhe following cannot be their possible suma) 13 N b) 9N c)7N d)12N?
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The standard enthalpy of formation for sulfur dioxide gas is #"-296.8 kJ/mol"#. Calculate the amount of energy given off in #"kJ"# when #"30.0 g"# of #"SO"_2 "(g)"# is formed from its elements?
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A radioactive substance has a half-life of 125 years - if there were originally 80 radioactive milligrams 50 years ago, how much is still radioactive today?
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A block of lead, with dimensions 2.0 dm x 8.0 cm x 35 mm, has a mass of 6.356 kg. How do you calculate the density of lead in #g/(cm^3)#?
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An electric motor can usefully convert 18 J of energy each second into kinetic energy to raise a mass above the ground. The motor has an input current of 2.5 A and an operating voltage of 16 V. Calculate the efficiency of the motor?
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Angles L and M are complementary. If the measurement of angle L is 16 degrees, what is the measurement of angel M?
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What is the force, in terms of Coulomb's constant, between two electrical charges of #12 C# and #-14 C# that are #15 m # apart?
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What is the volume of .023 mol of carbon dioxide gas at STP?
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Two runners leave the starting gate, one running 12 mph and the other 10 mph. If they maintain the pace, how long will it take for them to be one-quarter of a mile apart?
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What is the molar mass of 1-butene?
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The area of a rhombus or kite is half the product of the ______ ?
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What is the force of gravitational attraction between a man (mass 70 kg) and the Earth?
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In an acid-base titration, it takes 28 mls of .65M NaOH to neutralize 35 mls of HCl. What is the molarity of the HCl?
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A projectile is shot at an angle of #pi/6 # and a velocity of # 48 m/s#. How far away will the projectile land?
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What is the speed of an EM wave in space that has a frequency of 2.328×10^17 Hz?
For the following problems, you can assume that the speed of sound is 340 m/s.
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A sample of neon gas occupies a volume of 752mL at 25*C.What volume will the gas occupy at 50*C if the pressure remains constant?
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