The radius of a barium atom is 217 pm. How many barium atoms would have to be laid side by side to span a distance of 2.16 mm? atoms

Q: 1) Perform the following unit conversions: a. 35.7 moles to umol b. 0.065 mL to µL. c. 0.756 g/ml to…

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Q: What is the difference between a law and a theory?

A: The difference between a law and a theory has to be given.

Q: In Section 1.10, it was stated that 1 mol of sand grains would cover the state of Texas to several…

A: SOLUTION: Step 1: Simple Volume of 1 sand grain = (0.10 mm)3 = 0.001 mm3. 1 mole of sand =…

Q: A car gets 25.6 miles per gallon of gasoline. A full tank of gasoline contains 56.8 L. How many…

A:

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: I. Determine the number of significa 1. 8.314 g 2. 5.008 x 10-2 mM 3. MMNACI = 58.44 g/mol %3D 4.…

A: According to guidelines, only 3 sub parts have to be answered.

Q: The Statue of Liberty in New York City is approximately 305 ft305 ft tall. How many U.S. nickels…

A: By using the general conversion factor that 1mm = 0.00328084feet, the thickness of nickel coin in mm…

Q: What mass of iron (d = 7.874 g/cm') does a 2.0 in x 1.5 in x 10.0 in sample have?

A: Given  density of Iron = 7.874 gram/ Cm3 Volume = 2.0 inch × 1.5 inch × 10 inch 1 inch   = 2.54 Cm…

Q: The radius of a lead atom is 175 pm. How many lead atoms would have to be laid side by side to span…

A: Given: Radius of each lead atom = 175 pm = 175 X 10-12 m                          (Since 1 m = 1012…

Q: How many major plates does the Earth have?

A:

Q: Consider a 25.09 g cube of cadmium metal, an element which forms some of the most toxic salts known,…

A: The length of one side of cube = 1.45 cm

Q: The density of gold metal is 19.3 g/cm3, while that for silver is 10.5 g/cm3. Suppose you had the…

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Q: The mass of a single strontium atom is 1.46x10-22 grams. How many strontium atoms would there be in…

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Q: The density of copper is 8.94 g/cm°. What is the volume of copper in a 420 g sample? O 378 cm3 O 65…

A: Density of a substance is the ratio of mass to volume. The density is usually indicated by the…

Q: Complete combustion of 16 liters of gasoline consisting of a mixture of heptane gas (C7H16) and…

A: Recall the reaction for complete combustion of a mixture of heptane and isooctane.       C7H16 +…

Q: The single proton that forms the nucleus of the hydrogen atom hasa radius of approximately 1.0 *…

A: Solution- when 1 m = 100 cm   and 1 m = 1012 pm   now, proton radius =1.0×10-13cm…

Q: 32. In which group do all the elements have similar chemical properties? a) P, S, Cl b) Ag, Cd, Ar…

A: In which set of element have similar chemical properties ?

Q: 9.87 g + 0.520 g g 9.607 g – 1.00 g %3D g 7.77 g - 1.4 g %3D g

A: In addition and subtraction,  the minimum significant figures in final answer is same as fewest…

Q: The average dollar bill is 1.8x107 nm long and weighs 0.987 g.  The distance to the sun is 1.5x108…

A: Mole : Mole is the unit by which we measure the amount of substance. One mole is equal to the number…

Q: A flexible container contains 6.02 x 10 molecules of N, at a volume of 22.4L. What will be its new…

A: To solve this problem we have first convert the number of molecules into number of moles . We know…

Q: A student performed an analysis of a sample for its calcium content andgot the following results:…

A: The question is based on the concept of analytical chemistry. we have to explain regarding accuracy…

Q: A student working on this lab found the mass of their sample after the first heating to be 30.6057…

A: Given information: Mass of sample at first heating = 30.6057 g Mass of sample after 5 minutes =…

Q: The radius of a aluminum atom is 143 pm. How many aluminum atoms would have to be laid side by side…

A: Given : Radius of Aluminium atom = 143 pm And length of line to be made = 4.38 mm  Since 1 pm =…

Q: A chemist has a 19.50g sample of drinking alcohol (ethyl alcohol). what is the volume ogf the…

A: The relationship between mass and volume is given below.

Q: Explain the difference between a law and a theory?

A: Various ideas are formulated by the scientists and some are derived experimentally using various…

Q: It is estimated that an adult person contains 6.3 × 103 ppm phosphorus. What mass of phosphorus in…

A: By definition, ppm refers to parts per million.  Therefore, ppm of phosphorus in adult person would…

Q: 17. The element magnesium (Mg) can react with oxygen gas (O2) in the air to produce magnesium oxide,…

A: When Mg react with O2  it gives out MgO whic is white powder. The reaction for this changes is: 2Mg…

Q: What is the symbol for the element that is in group VIIA(17) and period 3?   What is the symbol…

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Q: What is wrong with the expression “That is just a theory,” if by theory the speaker is referring to…

A: To determine: The error in the expression “This is just a theory” if by the theory the speaker is…

Q: All of the platinum ever mined = 25 ft3 What is the price of all of the paltinum ever mined?…

A: The conversion of volume of platinum from 25 ft3 into cm3 can be done as,

Q: 2. You can identify a metal by carefully determining its density. A 2.166 g piece of an unknown…

A: Density of a substance is defined as its mass per unit volume.  Mathematically,  Density(d) =…

Q: If the average speed of a helium atom at a certain temperature is 1250 m/s, what is the speed in…

A:

Q: The Empire State building in New York City is approximately 1250 ft1250 ft tall. How many U.S. half…

A: Given : height of building = 1250 ft And thickness of each half dollar bill = 2.15 mm The…

Q: 26,000 nanoliters = ? dekaliters %3D 26.9 = ? 62 = ? %3D

A: The properties of matter are mainly two types. These are extensive properties and intensive…

Q: The Gateway Arch in St. Louis, MO is approximately 630 ft tall. How many U.S. dimes would be in a…

A: Given the height of Gateway Arch = 630 ft Given the thickness of dime = 1.35 mm  We have to find how…

Q: Mass of one a mu) Carbon Type 1                                12.0 Carbon Type 2…

A: The sum of all the values of individual masses divided by the total number of items in the sample is…

Q: In an experiment involving the extraction of essential oils from a plant, 7.5 mL of benzene (C6H6,…

A:

Q: An atom of a particular element has a volume of 7.8 X 10-31 m3. What is this volume in cubic…

A: Find volume of atom in cubic nanometre

Q: Determine the volume ton = 2205 Ibs, 1 lb 1 %3D %3D

A: Given mass of Cupper=2.2g Density =8.96g÷cm3 Volume =mass÷density Volume= 2.2÷8.96= 0.24cm3…

Q: A study of the Earth by The National Aeronautics and Space Administration (NASA) determined there…

A: Given  7.00 x 1011 tons of carbon    Conversion factor:  1 ton = 907.19 kg  1 kg = 1000 g = 103 g…

Q: Question attached

A: Theory or Law, though both sounds similar, they are never synonymous. Theory: Suppose, take ‘Bing…

Q: When a 39.71 g rock was placed in a graduated cylinder with 18.62 mL of water, the water level rose…

A: Ratio of mass to volume is termed as density which can be represented by a formula as:…

Q: The Gateway Arch in St. Louis, MO is approximately 630 ft630 ft tall. How many U.S. half dollars…

A: While finding the number of any substance always use the following formula. Number = Total…

Q: About two centuries ago, Benjamin Franklin showed that 1teaspoon of oil would cover about 0.5 acre…

A: The volume of the oil (V) = Area (A) x Thickness (T) T = V/A    1 km = 0.6214 mi, so 1 km2 = (0.6214…

Q: The distance between two atoms was determined to be 11.4 nm. What is this distance in centimetres?…

A: Distance is measured in different units. For example nanometre (nm), picometre (pm), centimetre…

Q: %3D What is the mass of 24.5 mL gasoline? (density of gasoline = 0.749 g/mL) O 18.4 g O 24.5 g O…

A: Given - density of gasoline= 0.749 g/ml volume of gasoline=24.5 ml

Q: What is the mass of phosphorus in a 45 kg person? mass of P = %3D TOOLS x10

A:

Q: A student performed an experiment of heating a hydrate and obtained the following data.    the mass…

A: Mass of the empty crucible =17.556g -----Equation A Mass of crucible and a hydrate= 21.018g…

Q: Chemistry : is the science concerned with composition ,structure and properties of matter as well as…

A: According to the definition of Chemistry , this question can be explained as follows

Group 14 Elements

The following elements come under group 14 of the periodic table.