Water hardness is expressed as parts per million calcium carbonate. If there are 850 ppm of calcium carbonate in well water, how many grams of calcium carbonate are in 16.2kg of water? Answer with 2 significant figures and do not put units in the answer box (they are g).

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Q: A chemist prepares a solution of barium acetate BaCH3CO22 by measuring out 230. μmol of barium…

A: Volume of solution = 500 ml = 0.500 L Number of moles = 230 μmol = 0.230 mmol Here we have to find…

Q: QUESTION 4 A 207.8 lb object displaces 2.71 gallons of water when submerged. What is the density of…

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Q: A major component of gasoline is octane (C,H,). When octane is burned in air, it chemically reacts…

A: We will first write balanced stoichiometric equation, then using it calculate mass of oxygen…

Q: In a typical person, the level of blood glucose (also known as blood sugar) is about 85…

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Q: A student sets up the following equation to convert a measurement. (The ? stands for a number the…

A: Answer:- This question is answered by using the simple concept of dimensional analysis using the…

Q: A student performs an experiment to determine the density of a sugar solution. She obtains the…

A: Accurate measurement :- A measurement is said to be accurate if it is very close to the actual…

Q: Imagine you are preparing an enzyme assay that requires a working concentration of 5 mM selenium…

A: Recall the following relation to calculate the volume of the stock solution of selenium dioxide that…

Q: Jose Altuve is a baseball player who plays for the Houston Astros. An Altuve is equivalent to his…

A: Given,Volume = 30.0 mL1 Altuve = 1.65 m Conversion of the volume from milliliters to a cubic Altuve…

Q: A chemist prepares a solution of sodium chloride (NaCl) by measuring out 55.4 μmol of sodium…

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Q: Part D bile, 8.8 x 10-6 M Express your answer to two significant figures and include the appropriate…

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Q: how many significant figures are in 16.90

A: Number of significant figures in 16.90 = ?

Q: Write the number of significant figures in the number on the line.           0.0240 ________…

A: We follow the below-assigned rules to find the number of significant figures in any measurement.

Q: A major component of gasoline is octane (C,H18). When octane is burned in air, it chemically reacts…

A: Answer: 1.7 g is the mass of octane consumed by the reaction of 6.1 g of Oxygen gas.

Q: Can you help me understand what a significant figure is and help me with this problem?  46.97  How…

A: The digits which carry meaning supporting to its measurement resolution is called as significant…

Q: Calculate the volume in liters of a 9.5 x 10 mm mercury (1) chloride solution that contains 225.…

A: Molarity is defined as the number of moles present in one liter of the solution. The unit of…

Q: Calculate the volume in milliliters of a 2.4M sodium nitrate solution that contains 125. g of sodium…

A: Given data, Molarity of NaNO3 = 2.4 M                                  = 2.4 mol/ L Mass of NaNO3 =…

Q: You've been asked to prepare a saline (NaCl) solution that is 70 mEq/L in sodium ions. You have…

A: The objective of this question is to calculate the final volume of a saline solution after dilution…

Q: A chemist prepares a solution of potassium iodide (KI) by measuring out 322. μmol of potassium…

A: The concentration of the potassium iodide solution is = 920 µmol/L

Q: Calculate the volume in liters of a 3.7 x 10 6 mM mercury(I) chloride solution that contains 800. mg…

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Q: A student sets up the following equation to convert a measurement. (The ? stands for a number the…

A: 1 KJ = 1000 J 1 KJ = 103 J

Q: Students working in lab accidentally spilled 14 L of 3.0 M H2SO4 solution.  They find a large…

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Q: How many mL are in 3.0 tsp? 1tsp=4.93mL. Answer with the appropriate number of significant figures.

A: The volume of 3.0 tsp is calculated as shown below. The volume of 3.0 tsp is 14.79 mL.

Q: An alkaline hypochlorite cleaning solution has a concentration of 4.140% (m:m). (Chemical formula…

A: Given: Concentration = 4.140 % (m/m) density of solution = 1.128 g/mL Volume of solution = 8.334 L =…

Q: Ammonium phosphate ((NH4)²PO4) is an important ingredient in many fertilizers. It can be made by…

A: Given, Ammonium phosphate ((NH4)3PO4) is an important ingredient in many fertilizers. It can be made…

Q: (2×10^−5)(5.09×10^4) (7.70×10^−8)   Above is listed as a fraction   Express your answer using the…

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Q: The "normal" lead content in human blood is about 0.40 part per million (that is, 0.40 g of lead per…

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Q: Naphthaline, C10H8, is dissolved in 110.0 g of water. The solution boils at 109.3°C. How many grams…

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Q: 1. a) For a particular metal, a student measures the volume to be 15.0 mL and a mass of 22.34 grams.…

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Q: Convert 4.3x10^-2 kilogram to nanogram. Use scientific notation

A: Given that : We have to convert 4.3x10-2 kilograms to nanograms.

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Q: What is the appropriate number of significant figures in this equation 3.5x0.251/8.02x30.0

A: To determine the appropriate number of significant figures in the result of the given equation, we…

Q: Division - express all answers in the correct significant figures - be sure to include units 2…

A: Significant figures are those digits which are absolutely necessary while indicating the quantity of…

Q: The density of a solid is (7.40x10^0) g/mL. What is this density in units of cg/L?  Hint: Break…

A: We know that 1g/ml =100000cg/L or 105 So 7.40×100 g/ml = 7.40×105cg/ml

Q: A chemistry student needs 15.00 g of acetone for an experiment. She has available 1.0 kg of a 39.1%…

A: Solution contains 1.0 kg of 39.1% (w/w) of acetone in chloroform means in 100 g of solution contains…

Q: A chemist prepares a solution of iron(III) bromide (FeBr,) by measuring out 36.9 µmol of iron(III)…

A: given, moles of iron(III) bromide in μmol = 36.9 μmol volume of the solution = 300. mL = 0.300 L

Q: An analytical chemist weighs out 0.118 g of an unknown monoprotic acid into a 250 mL volumetric…

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Q: Gaseous methane (CH4) will react with gaseous oxygen (O₂) to produce gaseous carbon dioxide (CO₂)…

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Q: A student sets up the following equation to convert a measurement. (The ? stands for a number the…

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Q: Here is the question I need help with: "Isopropyl alcohol has a density of 0.785 g/mL (d=0.785…

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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.