TRUE OR FALSE 1. Examples of personal protective equipment includes lab coats, long pants, closed shoes and prescription glasses. __________ 2. Thick calibrated glassware like graduated cylinders and volumetric flasks can be heated directly and will not break easily. __________ 3. Larger spills of hazardous liquid on the skin and clothes require immediate use of safety shower. __________ 4. If you get chemicals in the eye, you should flush them with water for

Q: How many moles of NaOCI would be present in 1 gallon of commercial bleach (density = 1.05 g/ml),…

A:

Q: Calculate the molecular mass of isopropanol (C3H$O).

A: The sum of the atomic masses of all atoms in a molecule

Q: Mixing water and arterial fluid in the reservoir of the machine is called secondary dilution.  True…

A: mixture of arterial fluid  with water and /or supplemental fluids is called primary dilution.

Q: 2. Using Excel, make a graph of the following data. Plot Mass vs. Volume for the following data on…

A: The given data of mass of Al and mass of Zr and volume is: Volume (mL) Mass of Al (g) Mass of Zr…

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A: Water has specific heat constant of 4.184 J per g per oC which means that 4.184 J of energy is…

Q: 5. Why is decantation rather than filtration the preferred method of separating the salt from the…

A:

Q: Organic solvent has a density of 1.12g/mL and is insoluble in water. If organic solvent is mixed…

A: To solve this problem we have to use the density of the given organic solvent .

Q: If you do not heat your crucible strongly enough to remove all volatile impurities when you heat the…

A: The loss of water happening during the inital heating or during the second heating is not relevant.

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A: Possible source of error that may have contributed to the student's disappointing yield: 1. May be…

Q: I need help finding the %Composition for %cychohexane and %toluene. The formula (area of peak/total…

A: To determine: % composition for Cyclohexane and toluene

Q: Mary Calculate the volume in milliliters of a 0.995 mol/L calcium bromide solution that contains…

A: Given, Molarity of calcium bromide (CaBr2) solution = 0.995 mol/L Mass of calcium bromide (CaBr2) =…

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A:

Q: A chemist prepares a solution of zinc nitrate by measuring out 78. umol of zinc nitrate into a 100.…

A: Given: The number of micromoles of zinc nitrate present = 78 μmol The volume of the solution = 100…

Q: The data below apply to questions 13 - 18. A sample is believed to consist of Epsom Salt, MgSO47H2O.…

A:

Q: For each of the following questions, write a reasonable hypothesis using the “If__________…

A: A hypothesis is a statement that predicts the relationship between two variables. In the "If...,…

Q: Look up the tolerances for a Class A 10 mL volumetric pipet, a Class A 50 mL buret, and a 100 mL…

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Q: To make a 0.5L of 2% NaCl, weigh _____ grams of NaCl, place in a graduated cylinder, and add water…

A:

Q: To make a 1000mL of 1% NaCl, weigh _____ grams of NaCl, place in a graduated cylinder, and add water…

A: A 1% solution of the solute is one gram of the solute per 100 mL of the final volume. For example, 1…

Q: 10. Calculate the volume of water in your melted ice and isopropanol solution.

A: We have been asked to solve question no. #10 Volume of isopropanol = 50ml Volume after ice melted =…

Q: substance has a solubility of 12.5 g per 100 mL of solvent at 100 degrees celsius and 2.45 g per 100…

A: Given : solubility of substance at 100 °C = 12.5 g/100 ml  Solubility of substance at 10°C = 2.45…

Q: Two liquids, A and B are immicible. Liquid A has a density of 0.89 g/mL. Liquid B has a density of…

A: The solution is given below -

Q: A student weighed 2.0 g crude sample (impure) and found 0.3 g glass and recovered 0.7 g of the…

A:

Q: Write a step-by-step procedure for this serial dilution. • The stock concentration of the blue dye…

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Q: Weigh out accurately 9.99 g of copper(II) sulfate pentahydrate (CuSO4·5H2O) by taring using a clean…

A: A numerical problem based on quantitative analysis, which is to be accomplished.

Q: What is the number of moles of glucose (CH₂O) in 0.500 L solution? of a 0.40 M

A: Given, Molarity of glucose (C6H12O6) solution = 0.40 M = 0.40 mol/L Volume of glucose (C6H12O6)…

Q: help please answer in text form with proper workings and explanation for each and every part and…

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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.