A sample is found to contain 6.79x10-11 g of salt. Express this quantity in milligrams. X mg

Q: A laboratory procedure calls for making 520.0 mL of a 1.2 M KNO3 solution. How much KNO3 in grams…

A:

Q: A chemist prepares a solution of barium chloride (BaCl,) by measuring out 15.3 g of barium chloride…

A: We have 15.3 g of barium chloride (BaCl2) which is dissolved in 50 mL of water.  First we have to…

Q: A chemist wants to make 6.5 L of a 0.280M CaCl2 solution. What mass of CaCl2 (in g) should the…

A: Molarity of a solution is defined as the number of moles of solute present in one litre of the…

Q: a) If 42.1 mL of 1.02 M sodium hydroxide, measured using a graduated cylinder, is placed in a beaker…

A: Beaker doesn't exactly measure the volume of any substance. For the measurement of volume one should…

Q: Suppose 1.78 g of sodium bromide is dissolved in 350. mL of a 0.30 M aqueous solution of silver…

A: Molarity is one of the concentration terms used to define the amount of a solute dissolved in a…

Q: . A sample of mercury(I) nitride weighs 3.33 dg.  How many nitrogen atoms are in this sample? The…

A:

Q: You are making a rubbing alcohol (=isopropyl alcohol) solution to disinfect surfaces. You start with…

A: • The values provided in the question are:-    i) Initial volume of isopropyl alcohol solution, V1…

Q: A solution of cobalt(II) chloride is analyzed, and the concentration of cobalt(II) ions is found to…

A: Given,  Concentration of cobalt(II) ions(Co2+) = 0.27 mol/L Concentration of Chloride ion (Cl^-1) =…

Q: At a certain temperature, an aqueous solution is 16.5% K2CO3 by mass and has a density of 1.149…

A: Given: density of solution = 1.149 g/cm3 Molar mass of K2CO3 = 138.205 g/mol Mass percent of…

Q: chemist prepares a solution of nickel(II) chloride NiCl2 by measuring out ×1.010^2μmolof nickel(II)…

A:

Q: Suppose 2.04g  of potassium chloride is dissolved in  300.mL  of a  40.0mM  aqueous solution of…

A:

Q: Suppose 1.39g  of potassium nitrate is dissolved in  350.mL  of a  75.0mM  aqueous solution of…

A: Molarity is defined as number of mole present in 1L solution. Here, 39.285 mmol KNO3 contains in 1L…

Q: A chemist prepares a solution of potassium dichromate (K,Cr, O,) by measuring out 63.7 µumol of…

A:

Q: Suppose you want to make a 0.75 M solution of copper (II) sulfate in a 250 mL volumetric flask. What…

A: To calculate mass of CuSo4 required to make 0.75M solution in 250 ml.

Q: The ocean is a heterogeneous fluid with different concentrations of zinc at different depths.…

A: Conceptual interpretation - As we know that ocean is the heterogeneous fluid with different…

Q: volume of 34.2 mL of a 1.16 M KMnO4 solution is mixed with 16.7 mL of a 0.392 M KMnO4 solution.…

A: Given, Note: 1L = 1000 mL Solution I Concentration of KMnO4 solution I = 1.16 M = 1.16 mol/L Volume…

Q: Which of the following compounds is a secondary alkyl halide? O Br I Br Br

A:

Q: A)  Calculate the molarity 12.21 mg KI in 107.6 mL of solution         Express your answer using…

A: Molarity of a solution is defined as the number of moles of solute to the total volume of solution.

Q: Suppose 13.5 g of barium acetate is dissolved in 300. mL of a 0.20 Maqueous solution of ammonium…

A: Details

Q: A chemist prepares a solution of zinc oxalate (ZnC₂04) by measuring out 0.0029 µmol of zinc oxalate…

A: Given :-  No.of moles of ZnC2O4 = 0.0029umol  Volume of solution = 150. mL  To calculate :-…

Q: A chemist prepares a solution of potassium bromide (KBr) by measuring out 1.75 g of KBr into a 250.…

A: Mass of KBr = 1.75 g  Volume of solution = 250 mL = 0.25 L

Q: Suppose 0.535 g of barium nitrate is dissolved in 250. mL of a 44.0 m M aqueous solution of sodium…

A: Given data:Calculate molarity of nitrate anion in the solution.

Q: (2.23 x 10^3 g) (9.0 x 10^-3 g)/ 10.1 x 10^-7 s^2=

A: The given quantities are in the units of grams and seconds. The expression has been solved below.

Q: A chemist prepares a solution of barium chloride (BaCl,) by measuring out 87. g of barium chloride…

A: Given: Mass of BaCl2= 87 g  The volume of the solution, V=350 mL= 350/1000=0.350 L [1 L = 1000 mL]…

Q: Suppose 0.433 g of zinc chloride is dissolved in 150. mL of a 19.0 m Maqueous solution of potassium…

A: Given, The mass of zinc chloride = 0.433 g. Volume of potassium carbonate = 150. mL Molarity of…

Q: Calculate the volume in milliliters of a 1.64M sodium thiosulfate solution that contains 150. g of…

A:

Q: 4 The mixture used in today's experiment was prepared as a 1:1:1 mixture (by mass) of sand, salt,…

A: Given ratio is (1:1:1)  This implies that the mass of sand, salt and salicyclic acid are equal. i.e,…

Q: Suppose 2.92 g of copper(II) acetate is dissolved in 50. mL of a 0.60 M aqueous solution of sodium…

A: Step 1: Calculate the number of moles of copper(II) acetate: First, we need to convert the mass of…

Q: The composition of a mixture of potassium chlorate and potassium chloride is to be determined. A 9.5…

A: The reaction for the decomposition of KClO3 is shown below:

Q: Suppose 1.47 g of zinc iodide is dissolved in 100. mL of a 76.0m M aqueous solution of potassium…

A: This question involves calculating the final molarity of zinc cation (Zn2+) in a solution that…

Q: You are making a rubbing alcohol (=isopropyl alcohol) solution to disinfect surfaces. You start with…

A: Given: Initial concentration of alcohol = 4.440 M Initial volume of solution = 316.7 mL And final…

Q: A chemist prepares a solution of iron (II) chloride (FeCl₂) by measuring out 1.0 g of FeCl₂ into a…

A: According to given question,

Q: Suppose 1.24 g of sodium chloride is dissolved in 200. mL of a 28.0 m M aqueous solution of silver…

A:

Q: Suppose 20.8 g of lead(II) nitrate is dissolved in 150. mL of a 0.70 M aqueous solution of ammonium…

A:

Q: A chemistry student must write down in her lab notebook the concentration of a solution of potassium…

A: In this we have to find concentration in g/mL   Given data:  Weight of empty graduated cylinder =…

Q: An aqueous stock solution is 72.0% HNO3 by mass and its density is 1.42 g/mL. What volume of this…

A: The objective of the question is to find out the volume of the stock solution required to make a…

Q: e the volume of NaOH solution the student will need to add to reach the final equivalence point.…

A: We should equal equivalent of both acid and NaOH ion to get mass of oxyliac acid  Equivalent =…

Q: A pharmacist works with a 1.75 M solution of sodium bromide (NaBr) and water. The volume of the…

A:

Q: You are making a rubbing alcohol (=isopropyl alcohol) solution to disinfect surfaces. You start with…

A: In the given question we have to calculate the final volume of the solution,  we have to use the…

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.