If a 1.00m piece of magnesium has a mass of 1.2500g, what is the mass of 3.48cm?

Q: nd contains 12.4g of hydrogen. What is the percent by mass of hydrogen in the compound?

A: Given A 37.1 g sample of an unknown compound contains 12.4g of hydrogen. What is the percent by mass…

Q: O µL O ML

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Q: Which is the total predictive error?

A: In chemistry there are many ways to check the deviation of experimental data from the accurate…

Q: e. A typical giant panda (weighing 101.8 kg) spends half its day eating bamboo. What is the weight…

A: Given: Weight of panda = 101.8 kg

Q: present conversion of "Nm" to its simplest MKS unit

A: In the given question we have to convert "N-m" into MKS unit, first of all we have to derive the…

Q: What is the key difference between an element and a com-pound?

A: The differences between  element and a com-pound are:

Q: A 2.401 gram sample of magnesium is allowed to burn in 10.680 g of oxygen gas. What mass of oxygen…

A: Given,  Mass of magnesium = 2.401 g.  Mass of oxygen gas= 10.680 g.  The of oxygen gas remaining in…

Q: MCQ 2: The number of times a p* is heavier than an e is A. 18 times B. 184 times C. 200 times D.…

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Q: Which is more "correct", a theory or law?

A: Given statement is :  Which is more "correct", a theory or law?

Q: If we allowed our soap to dry for 1 week the mass would change.  a. Will the mass increase or…

A: Density is a physical quantity that can be determined with the help of the mass and volume of the…

Q: A 0.0045 cm thin sheet of iron weighs 0.00262 g. find the area of this iron sheet if the density of…

A: Given,Length of the thin sheet is 0.0045 cmWeight of the iron is 0.00262 gDensity of the iron is…

Q: All of these are examples of chemical properties except:   A. Density  B.Solid formed   C. Color…

A: We need to determine which of the given properties is not a chemical property

Q: Aluminum has an atomic radius of 0.1431 nm and weighs 26.9815 g/mol. Compute for its density

A: Given : Atomic weight of aluminium = 26.9815 g/mol. And radius of aluminium atom = 0.1431 nm =…

Q: What is the mass of phosphorus in a 45 kg person? .017 mass of P Incorrect

A: Determine mass of phosphorus in 45 Kg person?

Q: 3. Is object E or object F more dense? [Assume the particles are uniformly distributed throughout…

A: Density of a substance is defined as the ratio of mass and volume. Density = Mass / Volume

Q: (e) (83.145 m - 83.142 m)/(4.52 s x 2.208 s) = i Units Hint Attempts: 2 of 1 Save for Later

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Q: MCQ 25: Fireworks release energy in the form of A. heat B. light C. sound D. all of above

A: We know that,. Firework happen then three phenomena appear, 1)Heat 2)Light 3)Sound

Q: Part B 54.6 g N2 Express your answer using three significant figures. VO AZ ΑΣΦ N = %3D Submit…

A: First of all calculate the moles of N2 by using formula - mole = mass/molar mass

Q: lece of iron [c = ure of 57.0 °C and then placed Og piece of copper [c = 0.385 nsulated container.…

A: Given,  Mass of iron = 208 g Heat capacity of iron = 0.449 J/g-°c Mass of copper = 180 g Heat…

Q: While cleaning your attic, you found your old rock collection. If 83.58% of the rocks have a mass of…

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Q: Suppose you are a brave soldier and working for the defense of your country. You joined the army on…

A: Age at the time of entering the cave = 20 years Age at the time of coming out of the cave = 80 years…

Q: By how many grams will the total mass of the two electrodes change during this time period? The…

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Q: What is the Law of Conservation Mass

A: The concepts of mass conservation is widely used in many fields such as chemistry,mechanics and…

Q: A 14-karat gold ring contains 58.3% gold and weighs 12.41 g. If gold sells for $308.00/ounce, what…

A: Given: weight of ring = 12.41 g mass of percent of gold in ring = 58.3 % gold sells for =…

Q: visible light (490 nm ) Express your answer using three significant figures. > View Available…

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Q: What is the volume of 3.67 kg of mercury at 25 C? You can use any reliable reference to look up the…

A: Given: Mass of mercury (Hg) at 25oC = 3.67 kg Density of mercury (Hg) at 25oC = 13.534 g cm-3

Q: A sample of vegetable oil with density 915 kg/m³ is found to have a mass of 0.0485 kg. Find the…

A: Density is the measure of the mass of an object divided by volume. So we use the formula of density…

Q: Brass is an alloy of copper and zinc. Varying the mass per-centages of the two metals produces…

A: Given:  The zinc by mass percentage=34%-37% Mass of yellow zinc=185g Mass of copper=46.5g

Q: The mass of a proton is 1.67 times 10-27kg. What is the mass of a proton in gigagrams?

A: The mass of a proton is 1.67 times 10-27kg. This mass of a proton is to be converted into gigagrams.

Q: Osmium, one of the heaviest elements with a density of 22.5g/cm3. What is the mass of 15.0 cm3 of…

A: mass = density x volume

Q: The price of tungsten is (3.83x10^1) dollars for one kg. What is this price in Euro/mg? Given: 1.00…

A: one kg of substances equal to 1000 grams one gram of substances equal to 1000 milligram (mg) so one…

Q: A student weighed 60.00 mg of sulfur in the lab. Convert this mass to ug and dg

A: 1 mg = 1000 microgram (ug) 1 mg = 0.01 decigram (dg) Given amount = 60.00 mg

Q: Your Chem101 trial expires on 01/25/21 at 12:00 AM Question 37.a of 37 You have three objects of…

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Q: Give the maximum number of electrons in an atom that can have these quantum numbers:

A: We are given different sets of quantum numbers. n = Principal quantum number. l = Azimuthal quantum…

Q: 5. A student tests an unknown substance that she believes to be a metal. Which of the following…

A: Metals are usually crystalline solids. In most cases, they have a relatively simple crystal…

Q: 8. X is an unknown element at 1000 °C and 10.0 mmHg has a density of 8.8 x 104 g/L in gaseous state.…

A: Dear student , since you have posted multiple questions we will allow to solve only first question…

Q: -273 K O 'F -273 °F -273 °C OK O'C

A: We know that absolute zero  is 0 k So by using relationship  0 K = 273 + 0C 0C=0- 273 0C= - 273…

Q: 1. A 25g of Gold is found. Compute for the number of molecules and atoms present in the substance.

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Q: METHANE EMISSIONS: Mass per time (m/t): megagrams, or teragrams per year (Mg yr–1, Tg yr–1) Mass…

A: Mass flow rate is the mass of a substance which passes per unit time and its SI unit is Kg s-1. Mass…

Q: 24R) The density of silver is 10.5 g/cm3. A piece of silver with a mass of 61.3 g would occupy a…

A: The formula for density is   Density = mass / volume. In above formula with known values of any two…

Q: About 0.50g of zinc metal was weighed out in a tared weighing cup using a top-loading balance. The…

A: The readability of top-loading balances is about 0.001g. Hence they are also called precision…

Q: number 22, is this correct?

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Q: c. 0.756 g/mL to ng/L d. 9.647 x 10 nm/s to m/yr (Assume that the year is 2022).

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Q: Neutron stars form when large stars collapse. They are very dense, having an average density of…

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Q: 2. A temperature of 310'k is the same as: b) 94'F., a) 67'F c) 98.6'F. d) -97 F. e) 95'F.

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Q: 8. A gold atom has a width of 0.166nm. How wide is a gold atom in inches? Hint: nm→m→cm→in

A: Given : width in nm = 0.166 nm

Q: Steam at a temperature of 134 °C is vented into an aluminum cup of mass 218 grams containing 600…

A: Given, Initial temperature of steam= 134°C Final temperature = 20°C Iniatial temperature of…