How many grams of ca - Study guides, Class notes & Summaries

Chem 101 Final Exam Questions And Answers 100% Solved Determine the formula weight of KBr - answer119.00 amu Determine the mass in grams of 3.00 x 10^21 atoms of arsenic. (The mass of one mole of arsenic is 74.92 g.) - answer0.373 g Fill in the blank: A mole is defined as the number of carbon atoms in _____ g of pure ^12C. - answer12 How many atoms are in 1.2 mol of carbon? - answer7.2264 x 10^23 Which one of the following contains the most moles of oxygen atoms? A) 1 mol of Fe(C2H3O2)3...

Chem 101 Final Exam Questions And Answers 100% Solved Determine the formula weight of KBr - answer119.00 amu Determine the mass in grams of 3.00 x 10^21 atoms of arsenic. (The mass of one mole of arsenic is 74.92 g.) - answer0.373 g Fill in the blank: A mole is defined as the number of carbon atoms in _____ g of pure ^12C. - answer12 How many atoms are in 1.2 mol of carbon? - answer7.2264 x 10^23 Which one of the following contains the most moles of oxygen atoms? A) 1 mol of Fe(C2H3O2)3...

CALCULATIONS - ANSWER-CALCULATIONS A patient is taking 2 calcium carbonate tablets once daily. Each weighs 1,500 mg total (non-elemental) weight. She wishes to trade her calcium tablets for the citrate form. How many 750 mg citrate tablets (by weight) will she need to provide the same daily dose? (Answer must be numeric; no units or commas; round final answer to the nearest WHOLE tablet.) - ANSWER-8 (Pg 76) A pharmacist dissolves 4 ketoconazole tablets, each containing 200 mg, into a oin...

temperature is related to KE how? temp is the average kinetic energy thermal energy is related to KE how? thermal energy is the total KE Brainpower enthalpy of fusion is ALWAYS greater than enthalpy of vaporization because? it has to break more bonds (solid --> liquid) the amount of heat depends on (2 factors) 1. the type of substance 2. the amount of the substance during a phase change does temperature change? NO if an archaebacerial species lives in a pool that is 0.01 M HCL wh...

Lesson 04 - Week 04 Quiz Return to Assessment List Part 1 of 3 - 44.0/ 52.0 Points Question 1 of 25 4.0/ 4.0 Points `Eureka! I've discovered a new compound! Yay for me. I have determined that its empirical formula, but in order to determine its actual molecular formula, I need to know which of the following? • A. the number of moles of the compound in a 1.00 g sample of the substance • B. the density of the compound • C. the boiling point and freezing poin...

Wiley Plus Exam 1 Questions With 100% Correct Answers 2024 One ml of the 0.1 M supstance-A is added to 9 mls of water, and 1ml of the dilution is added to another 9 ml of water. What is the concentration of the final dilution in molar (M), millimolar (mM), micromolar (uM), and nanomolar (nM)? - answer.001 M, 1 mM, 1000 uM, 10^6 nM How many moles of sodium hydroxide (NaOH ) are in 10 g of NaOH? - answer.25 mol How many grams of solid calcium hydroxide Ca(OH)2 are required to prepare 200 mL ...

What are the 4 biological macromolecules? correct answers sugars, fatty acids, amino acids, nucleotides What is the central dogma of molecular biology? correct answers DNA(transcription) > RNA(translation) > Protein Two major types of cells? correct answers Prokaryotic and Eukaryotic What are the most abundant elements in the human body? correct answers H, C, N, O What are considered the "essential elements"? correct answers Na, Mg, K, Ca, P, S, Cl Covalent bonds are f...

Chapter 3—Chemical Equations and Reaction Stoichiometry MULTIPLE CHOICE 1. Which of the following is not a consequence of the Law of Conservation of Matter? a. It provides a basis for balancing chemical equations. b. It means that there will be no observable change in the quantity of matter during a chemical reaction. c. As a result, there will be the same number of moles on both the reactant and the product side of a balanced equation. d. It can be stated as "matter is neither creat...

Chemistry: The Central Science, 14e (Brown, et al.) Chapter 3 Chemical Reactions and Reaction Stoichiometry 3.1 Multiple-Choice Questions 1) When the following equation is balanced, the coefficients are ________. C8H18 + O2 → CO2 + H2O A) 2, 3, 4, 4 B) 1, 4, 8, 9 C) 2, 12, 8, 9 D) 4, 4, 32, 36 E) 2, 25, 16, 18 Answer: E Diff: 2 Var: 1 Page Ref: Sec. 3.1 LO: 3.1 GO: G2 2) Of the reactions below, which one is not a combination reaction? A) C + O2 → CO2...

Calculate the average atomic mass of element X if the percentage is abundant isotopes are as follow X-12 is 98.5% X-13 is 1% X-14 is 0.5% - ANSWER Average Atomic Mass = 12 X 98.5 + 13 X 1 + 14 X 0.5 / 100 = 12.02 AMU Calculate the mass of metallic cuboid with measurements 5cm, 3cm, and 1cm, if its density is 19.8g/ml (D = M/V) - ANSWER V = 5 X 3 X 1 = 15cm^3 M = D X V = 19.8 X 15 = 297g How many milligrams are in 0.0000454 grams - ANSWER 0.0000454g X 1000mg/1g = 0.0454mg Draw ...