A typical "lead" pencil is actually made from carbon. If the carbon in the pencil weighs 1.50 gram the pencil has (atoms] atomns of carbon.

Q: Classify the following as physical or chemical change: When a solution of concentrated HCl(aq) is…

A: For question 3, we have to find the whether the addition of concentrated HCl(aq) to water is a…

Q: How many moles of water are in 1.00 L of water, whose density is1.00 g/mL?

A:

Q: 13. СО, # of molecules: # of elements: Name of element: # of atoms Total # of atoms: The #2 is a…

A: The name of the element and number of atoms in the given molecules has to be given.

Q: The weight of an iron ball is 320 gram, if we calculate the mass of the same ball on the moon and…

A: Given the weight of the iron ball = 320 gram Weight and mass are two different things and have…

Q: A beaker has a mass of 225.08g . When a liquid is added to the beaker, the combined mass is…

A:

Q: What is the equivalent in joules of 126 Calories?

A: joule and calories are the unit of energy , joule is the SI unit of energy.

Q: Convert the mass of NaC2H;O2 weighed to moles NaCH3O2. Show work with dimensional analysis, ?

A: The sum of the weight of the each atom in a molecule is called the molar mass or molecular weight .…

Q: A dose of of asprin of 25.0 mg per kilogram of body weight has been prescribed to reduce the fever…

A: The temperature or fever of human body is brought down using aspirin tablets. It also helps in…

Q: classify whether it is greater than, less than, or equal

A: Since you have posted multiple questions, the answer for first question is given below. Kindly…

Q: O CEMICAL REACTIONS Calculating and using the molar mass of elements ROB V A chemist determined by…

A:

Q: How many mew g are there in 1 mg?

A: The units of measurement of the weight of any compound can be given in grams (g) or milligrams (mg).…

Q: 1-mass of crucible and lid containing magnesium oxide 2- mass of empty crucible and lid from this…

A: To determine the mass of crucible + Lid + Magnesium oxide therefore from the given data table the…

Q: 18/8 stainless steel is made up of 18% (m/m) chromium and 8% (m/m) nickel in iron. What mass of iron…

A: Mass percentage of chromium = 18 % Mass percentage of Nickel= 8% Mass percentage of iron = 100 - (18…

Q: 1 Whichis NOT apro Coty used to ideritity substances O A Density O B. Electrical Properties O G Mass

A: In multiple questions we solve only one question according to Bartleby Guidelines. The substance can…

Q: When we say that lead is a denser metal than aluminum, are we talking about anextensive or intensive…

A: Intensive Property • does not depend on the amount of the substance. • even if you change the amount…

Q: ny grams of products wil

A:

Q: Using examples, explain the difference between a physicalproperty and a chemical property.

A: The characteristics shown by a substance both physically and chemically is called a property.

Q: A bottle containing 325 g of cleaning solution is used for carpets. If the cleaning solution has a…

A: The equation is:

Q: How many grams F in 650.1 g Br2F6? Put the answer in the box in regular (non-scientilic) notation.…

A:

Q: If I wanted to connert 34 Smetcers in to Km which of the fellowing conversions noula i need?

A: Hi, as you have not provided the following options for the conversion. Hence we are solving…

Q: e mass,

A:

Q: Question attached

A: The quantity of moles of solute that is present in one liter of solution is molarity. The formula to…

Q: A 10.0 mL sample of oil is transferred into a beaker with a mass of 43.559 g. The mass of

A: given  beaker mass =43.559 gr  sample of oil volume =10 ml beaker mass with oil=56.890 gr mass of…

Q: 2. Convert moles of white and brown sugar to grams and fhen to cups using the conversion, cup of…

A:

Q: 2.3E23 molecules of sugar (CH120,) would weigh how many grams?

A: The moles are the unit of the substance and it is explained as 6.022×1023 atoms/molecules/ions. It…

Q: 15. Cr(NH,),(NO,, # of molecules: # of elements: Name of element: # of atoms Total # of atoms: The…

A: Elements are the type of substances which cannot be broken down into smaller substances. Group of…

Q: The following particulate-level diagram best represents a(n).

A: We are given a particulate-level diagram as follows:

Q: A sample of ascorbic acid (vitamin C) is synthesized in thelaboratory. It contains 30.0 g carbon and…

A: The mass of oxygen (in grams) in the second sample has to be  computed

Q: 2. As of today Gold is trading at $1841.94 per ounce. Recall that 1 ounce 28g. If we have 28.56g of…

A:

Q: Aluminum is a lightweight metal (density = 2.70 g/cm3)used in aircraft construction, high-voltage…

A: Conversion : 1 kg/m3 = 10-3 g/cm3  density = 2.70 g/cm3              = 2.70 x 103 kg/m3

Q: which gasoline is less is less expensive: gas that cost $2.41 per gallon, or gas that sells $0.78…

A:

Q: How many mg of iron (MM = 55.845 g/mol) are in 15.00 mL of a solution that contains 2.130 mg…

A:

Q: Which of the following is NOTA chemical change? O a. bicycle rusting O b. antacid neutralizes…

A:

Q: Difference between actual yeild and theoretical yeild.

A: Yield of reaction represent amount of products formed in gram during a chemical equation.

Q: A bottle containing 425 g of cleaning solution is used to clean hospital equipment. If the cleaning…

A:

Q: A chemist measures the amount of nitrogen gas produced during an experiment. He finds that 2.78 g of…

A:

Q: O a. mixture of compounds Ob. mixture of elements Oc pure element Od. pure compound QUESTION 27…

A: 26)mixture of compound  A is the answer  27) physical change B is correct answer  28) homogeneous…

Q: What is the si unit for the mass of flour

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Q: A solid white substance A is heated strongly in the absence ofair. It decomposes to form a new white…

A: The chemical reaction taking place is,

Q: The mass in milligrams of oxygen (molar mass= 16 g/mol) in 1920 cm3 of 1.76X10-3 M solution of…

A: To calculate this question first of all we have to calculate the moles of H2Cr2O7 used.  As we know…

Q: A medium sized carrot weight 61 g and contains 6 g of carbohydrate. What percent by mass of the…

A:

Q: he maximum mass of water th

A:

Q: In March 1989, the Exxon Valdez ran agroundand spilled 240,000 barrels of crude petroleum off the…

A: Since 1 km = 0.621 miles The charges as the trip begin with a full charge is calculated as

Q: The mole is a unit that counts things and it can be converted into

A: Mole is the unit of the amount used extensively in the calculation of chemistry. The mole amount of…

Q: A chemist prepares a solution of silver(I) nitrate (AGNO,) by measuring out 413. umol of silver(I)…

A:

Q: The following picture represents.. * 1 point O Mixtures of elements O Mixtures of compounds O…

A: Element is the purest form of the substance. The mixture of elements contain the same kind of atoms.…

Q: Whut is the density of a sample of gold1a ocudies 186 cm. Molar mass of the metal Your Anwer

A: Given : number of atoms of gold = 1.19 X 1023 atom And volume of sample = 1.86 cm3

Q: blanks in the statements below: o A mixture of sodium chloride and ammonium chloride can be…

A: The question is based on the concept of separation techniques. There are various techniques used in…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".