calcium, how many kilograms of calcium are there in a

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

A: Kilogram is a small unit while gigagrams 1kg=10-6gigagram So 1.67×10-27kg have 1.67×10-27×10-6…

Q: Super fine 40-gauge copper wire has a diameter of only 0.080 mm and weighs only 44.5 g/km. Suppose a…

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Q: The radius of an atom of gold (Au) is about 1.35 Å. Part A: Express this distance in nanometers…

A: Radius of

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

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

Q: In an experiment, 10.00 g of red mercury(II) oxide powder is placed in an open flask and heated…

A: In this problem e have to find the mss of oxygen formed by using the law of conservation of mass.…

Q: A penny has a thickness of approximately 1.0mm. If you stacked Avogadro’s number of pennies one on…

A: The thickness of a penny=1.0 mm Avogadro's number=6.022 x 1023  Avogadro’s number of pennies were…

Q: What is the mass of 1 gal of carbon tetrachloride in grams? In pounds. I 4.55 L. 1 lb.- 0.454 kg)

A: Given : volume of CCl4 = 1 gal  To calculate :- mass of CCl4 (in grams and pounds)

Q: The shattered glass case at the scene of a jewelry store robbery was determined to be made of potash…

A: Given,Density of potash borosilicate glass = 2.16 g/mLMass of unknown glass fragment = 3.616 gVolume…

Q: Calculate the total mass of sodium chloride in the world's seawater. The total mass of sodium…

A: As per our guidelines we can only solve first question. Please resubmit the other questions as next…

Q: An average fly has a mass of 0,048 grams, An average ant has a mass of 3,12 × 10-à grams. • Would…

A: Solution - According to the question - Given - First, we should solve 10^-3 = 0.001 "for the ants"…

Q: 4. Compare the total mass of the reactants with the total mass of the products: Total Mass of the…

A: Given reaction is,  K2CrO4 (aq) + Pb(NO3)2 (aq) →2KNO3 (aq) + PbCrO4 (s)

Q: how many mm3 are in 16.7 cm3?

A: We know,  1 cm3 = 1000 mm3  Given, 16.7 cm3

Q: Explain in your own words, by writing a short paragraph, how the atomic theory explains…

A: Law of conservation of mass states that atoms are neither created nor destroyed during a chemical…

Q: A sample of calcium chloride, CaCl2, has a mass of 27.8 g. What mass of chlorine is present in the…

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Q: The following picture represents.. Mixtures of elements Mixtures of compounds Molecules of elements…

A: What are the chemical species present in the following

Q: A single water molecule has a mass of 2.99x10-23 g. Each molecule contains two hydrogen atoms that…

A: Given data, The mass of a single water molecule = 2.99 × 10-23 The percentage of two hydrogen atoms…

Q: A wonder woman found a piece of silver colored metal while walking around the myscira. she…

A: We should calculate the density of the sample and it can be done as follows: Mass of the sample=13…

Q: What is one quantitative fact about the element of Sulfur with proper significant digits and units?

A: Please find your solution below : An element in chemistry is defined as a substance which cannot be…

Q: 2. A chemistry teacher searching for his golf ball in the trees this summer found a magical pool of…

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Q: How many pounds of nickel are in 1.2 × 10° of the $1 coins? Give your final answer in the space…

A: we know that in US  1 dollar = 20 nickles

Q: A copper atom has a ass of 1.06 x 10 22 g and a penny has a mass of 2.5 g. Use this information to…

A: 1 mole = 6.022×1023 [ Avogadro's number ] One mole of copper will consists of 6.022×1023 Copper…

Q: The shattered glass case at the scene of a jewelry store robbery was determined to be made of potash…

A: Density of any substance can be defined as the ratio of the mass of the substance to its volume. It…

Q: a room contains 4.23 x 10^24 molecules of oxygen. what is the mass of oxygen in the room?

A: Number of mole of substance is calculated by dividing mass of substance (m) to molar mass (M) of it…

Q: 20. As an instructor is preparing for an experiment, he requires 425 g phosphoric acid. The only…

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Q: In a catalog you can buy sulfuric acid with 99.999% purity at a cost of 2,263.00 pesos for a 100 mL…

A: The question given, volume of sulfuric acid (V)= 100 ml, Density of this acid (d) = 1.84 g/ml And…

Q: Since the Geologists at Grasberg know the density of gold to be 19.32g/cm^3 they were surprised by…

A: Density is defined as mass per unit volume of the substance  . Metals have high density as compared…

Q: Gold (Au) has a density of 10.046 g/cm3. What is the mass in kg of 1.89 m3 of Au? ***Be sure to show…

A: given , density of gold = 10.046 g/cm3 volume of gold = 1.89 m3

Q: You have three objects of varying shapes and sizes: Object 1 is a rectangular block of tin. Object 2…

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Q: (A true story.) While organizing the undergraduate stockroom, a new chemistry professor found a…

A: A question based on mass spectrum, which is to be accomplished.

Q: After burning for three hours, a candle has lost half of its mass. Explain why this example does not…

A: Law of conservation of mass states that Mass can not be created or can not be destroyed during any…

Q: The largest single rough diamond ever found, the Cullinan Diamond, weighed 3106 carats. One carat is…

A: Given that:-     Weight of diamond=3106 carats      Mass of diamond in mg=?

Q: A student calculated that the average neutralizing power of their antacid was 102 grams of acid…

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Q: Super fine 40-gauge copper wire has a diameter of only 0.080 mm and weighs only 44.5 g/km. Suppose a…

A: Diameter of the wire = 0.080 mm Weight of wire per km = 44.5g   Weight of wire used to wind a magnet…

Q: What is the mass of 1.86x10^24 molecules of nitrogen

A: first find the no. of moles of N2  then find mass by multiply by its molar mass

Q: Gallium has a density of 5.9 g/mL. How much mass do 54.2 mL of Gallium have? 319.78 g 319.8 g 320 g…

A: •Given :-density of gallium=5.9 gm/ml                Volume=54.2 ml   • As we know density formula…

Q: The shattered glass case at the scene of a jewelry store robbery was determined to be made of potash…

A: When a body is immersed in a fluid, it displaces the fluid. Then calculate, --------- (1)

Q: What is the mass of 1 carbon atom in grams? what is the mass of one dozen carbon atoms in grams and…

A: Carbon is an important element in periodic table. Its atomic number is 6. It has 4 e-s in outermost…

Q: How many cm3 are there in 2.5 m3?

A: Given, 2.5 m3  Conversion factor : 106

Q: What is the edge length of a cube whose mass for aluminum is 3.44g? Density is 2.70 g/cm3 and Volume…

A: In this question, we want to determine the value of edge length.  You can see details Solution how…

Q: A cube of an unknown metal measures 1.61 mm on one side. The mass of the cube is 36 mg. Which of the…

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Q: Which one of the following would have approximately the same mass as 40.0 cm³ of lead (d = 11.3…

A: A question about the relationship between mass and density, which is to be answered.

Q: You are given 3 unknown cylinders eac with masses of exactly 25.00 g. Your choices of metal have the…

A: To solve this we will use  Density = mass / volume  We  will calculate the volume using this formula…

Q: A sample of gaseous neon atoms at atmospheric pressure and 0 degrees C contains 2.69*10^22 atoms per…

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Q: What mass of potassium gold cyanide, KAu(CN)2, contains 311 g (10 ounces) of gold?

A:

Q: The element bromine at room temperature is a liquid with a density of 3.12 g/mL. Calculate the mass…

A: The relation between density, mass and volume is given as,

Q: The price of a ream of paper is $2.90. There are 250 sheets of paper in a ream. If a sheet of paper…

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Q: I need help with #4.

A: We have to calculate the mass in grams of 20 neon atoms given thatMass of one average neon atom =…

Q: The radius of a potassium atom is 231 pm. How many potassium atoms would have to be laid side by…

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Q: What is the volume in liters of a copper ball with a mass of 12.934 kg. density (Cu)=8.92 g/cm3 1…

A: