A sample of water (2 Hydrogens and one oxygen in each molecule)  has a mass of 10.0 grams. What is the number of molecules of water in the 10.0 gram sample (Atomic mass  in amu:  H = 1, O = 16)?

Q: Calculate the approximate number of atoms in abacterium. Assume that the average mass of an atom in…

A: Given,

Q: How many electrons have been removed or protons added?

A:

Q: The half-life of Carbon-14 is 7 years. How much of an initial 168 g sample will remain after 30…

A:

Q: A large wine company owns 125-wine barrels that hold a capacity of 3,875 gallons each. How many…

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Q: for any wave, the speed equals the wavelength times the frequency. If a photon of visible light has…

A:

Q: mass of a diamond whose volume is 0.5 cm32 Ex : If the density of a diamond is 3.5 g/cm³ , what…

A: we know that  mass = density x volume

Q: One thousand microns is equal to A. 10-3m B. 10-6m C. 10-9m D. 10-12m

A:

Q: 800 mL of gas is at a pressure of 100 kpa. The pressure decreases until the volume is 3.2 L. What is…

A:

Q: The size of a bacteria is 0.25 micrometer. This size is same as О а. 250 nm O b. 25 nm O c. 2.5 nm O…

A: 1 micrometer = 10-6 m 1 nm = 10-9 m

Q: How much energy is used to light a 45 Watt light bulb for 10 hours?

A: Given, P=45 Watt t = 10 Hours We know that, E = P*t   = (45 Watt) *(10 h)    = 45 Watt ((10 h) (60…

Q: The distance around the Earth's equator is 40,077 kilometers, and the population of the United…

A: We have to place 150,000,000 peoples in a total distance of 40,077 km=40,077 ×105 cm Hence the…

Q: 4. Cobalt-60 has a half-life of approximately 5 years. If 53 g of the material was stored for 20…

A:

Q: If 2.25 gg of orange mercury oxide decomposes to 2.09 gg of liquid mercury and oxygen gas, what is…

A: Given information: It is mentioned that 2.25 g of mercury oxide decomposes to 2.09 g of liquid…

Q: The number of square centimeters in 4.00 square meters is O 1) 4000 O 2) 400 O 3) 40 O 4) 40000

A: Given  4 m2

Q: How much does it cost to light a 300-W lightbulb for 30 days if the cost of electricity is 7¢/kWh?

A:

Q: Zirconium has an HCP crystal structure and density of 6.51 g/cm³, what is the volume of its unit…

A: Given, Zirconim has an HCP crystal structure and density of ρ = 6.51 gcm3

Q: If a wave has a wavelength of 2 m and a frequency of 500 Hz, what is its speed?

A: Given data The wavelength of the wave is given as λ=2 m. The frequency of the wave is given as f =…

Q: The diameter of a water droplet is 8um. This value in the S.I. system of units is O a. 8x10-6 m O b.…

A:

Q: The density of nuclear matter is about 1018 kg/m3. Given that 1 mL is equal in volume to cm3, what…

A: The given density of the nuclear matter is

Q: How many electrons will weigh 1 mg if the mass of an electron is 9x10-28 g?

A: mass of an electron e=9.1×10-28g let number of electrons be n

Q: An object has a density of 5.6 x 10⁵ kg/m³. What is the mass of the object if its volume is 4.5 x…

A:

Q: If you dispense 0.3 grams of aspirin, how many milligrams are you giving?

A: CONCEPT: Method of conversion of unit is used to find required value. 1 g=1000 mg where g is gram…

Q: If a 3.5-ounce portion of spinach costs $0.25, how much would a 5-lb box cost?

A: Given: The cost of 3.5 ounce spinach is 0.25$. Mass of the box is 5 lb. Concept: There are 16 ounces…

Q: An adult dose of cisatracurium, a skeletal muscle relaxant, is 3.4 mg.  If this drug is administered…

A: Given: Adult dose of cisatracurium: 3.4mg Body surface area of the child : 0.75 m2. The relation…

Q: How many microstates are created when 4 particles are distributed into 2 boxes?

A: Given data :     Number of particles (N) = 4     Number of boxes = 2 Formula :    Here, number of…

Q: A Campbell's tomato soup has a density of 1.05 g/cm³. How many grams of soup are in 5.00 × 10-2 m³…

A:

Q: Tungsten has a density of 19,300 kg/m3. If you have a cube of tungsten that measures 5 cm on a side,…

A: Given, a Tungsten has a density of ρ=19,300 kg/m3. If you have a cube of tungsten that measures l=5…

Q: A fire burns an area approximately 200 feet wide and 800 feet long. How many acres burned? а.) 3…

A: Given that:- Dimensions of field =800ft×200ft

Q: A balloon with a volume of 2.0 L is filled with a gas at 3 atmospheres. If the pressure is reduced…

A: "Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: At one atmosphere, a cylinder with movable piston contains 2,000 milliliters of gas. If the pressure…

A:

Q: Suppose you are designing a proton decay experiment and you can detect 50 percent of the proton…

A: In a proton decay experiment 50 percent of proton decay in a tank of water is detect.

Q: A sample of gas has a volume of 12 L and a pressure of 200 kPa. If the pressure of gas is increased…

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Q: How many joules of electrical energy are converted into heat and light when a 50 W lamp is lit for 2…

A:

Q: One mole of atoms consist of 6.02 × 10^23 individual atoms. If one mole of unicorn atoms were spread…

A: It is given that:

Q: The density of ( Lead ) in “ cgs “ units is ( 11.3 gm/cm^3). The density of same material in the "…

A:

Q: How much energy in consumed if a 100 watt light bulb is operated for 10 MINUTES?

A:

Q: In purchasing food for a political rally, you erroneously order shucked medium-size Pacific oysters…

A: Given information: Here, l, b, and h are the dimensions of the container.

Q: SA person tries a new diet where they eat onlLy eggs as their protein source. .They lost 1.7 ke in a…

A: Given Weight lost in one week = 1.7 kg Average rate of weight loss R = 1.7 kg / week 1 kg = 1000 g 1…

Q: At zero degrees Celsius and one atmosphere (STP), the volume of a gas is 1,000 milliliters. If the…

A: