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

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 ...

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 ...

The same species of yeast that we use in the making of wine, beer, distilled spirits, and bread is called? Saccharomyces Cerevisiae Current per capita wine consumption in the US is roughly? 15 bottles per year (2.9 gal) Brainpower Read More 0:07 / 0:15 The 4 biggest US wine companies out of 10,000+ have this share of the market? 75% The "three tier" wine market system which operates in most states is comprised of? Wineries - Wholesalers - Retailers The foll...

Chapter 6: Calculate the molar Mass the following 1. CH4 C = 1 x 12g/mol = 12 g/mol H = 4 x 1 g/mol = 4 g/mol CH4 = 16 g/mol 2. H2O H = 2 x 1 g/mol = 2 g/mol O = 1 x 16 g/mol = 16 g/mol H2O = 18 g/mol 3. MgBr2 Mg = 1 x 24 g/mol = 24 g/mol Br = 2 x 80 g/mol = 160 g/mol MgBr2 = 184 g/mol 4. H3PO4 H = 3 x 1 g/mol = 3 g/mol P = 1 x 31 g/mol = 31 g/mol O = 4 x 16 g/mol = 64 g /mol H3PO4 = 98 g/mol 5. Ca(OH)2 Ca = 1 x 40 g/mol = 40 g/mol O = 2 x 16 g/mol = 32 g...

CHAPTER 3: Chemical Foundations: Elements, Atoms, and Ions 1. What is the most abundant element on the Earth (including the crust, oceans, and atmosphere)? A. silicon B. oxygen C. hydrogen D. iron E. carbon ANS: B PTS: 1 TOP: Test: Chapter Test NOT: worldofchem_2013 2. What is the most abundant element found in the human body? A. oxygen B. water C. hydrogen D. calcium E. carbon ANS: A PTS: 1 TOP: Test: Chapter Test NOT: worldofchem_2013 3. The symb...

Chapter 03 - Atoms and Elements 1. The most abundant element in the earth's crust by mass is: a. Hydrogen b. Carbon c. Oxygen d. Silicon e. Nitrogen ANSWER: POINTS: 2. Which of these statements about atoms is incorrect? a. Atoms are the smallest visible amount of an element. b. Atoms are composed of protons, neutrons, and electrons. c. Atoms are the building blocks of all matter. d. Atoms are the smallest identifiable unit of an element. e. There are 91 different naturally occurrin...

CHEM 103 MODULE 1 EXAM 2023/2024 MODULE 1 EXAM Question 1 Click this link to access the Periodic Table. This may be helpful throughout the exam. 1. Convert 845.3 to exponential form and explain your answer. 2. Convert 3.21 x 10-5 to ordinary form and explain your answer. 1. Convert 845.3 = larger than 1 = positive exponent, move decimal 2 places = 8.453 x 102 2. Convert 3.21 x 10-5 = negative exponent = smaller than 1, move decimal 5 places = 0.0000321 Question 2 Click this link to...

Praxis II (5435) - General Science: Content Knowledge Exam Questions With 100% Correct Answers Which of the following is a source of nonrenewable energy? - answerCoal Which of the following describes the process skill of concluding? - answerMaking a determination based on the results of a controlled experiment A chemistry experiment is performed to determine the effect of a nonvolatile solute on the boiling point of water. Three trials are performed in which 10 mg, 20 mg and 30 mg of salt...

Praxis II (5435) - General Science: Content Knowledge Exam Questions With 100% Correct Answers Which of the following is a source of nonrenewable energy? - answerCoal Which of the following describes the process skill of concluding? - answerMaking a determination based on the results of a controlled experiment A chemistry experiment is performed to determine the effect of a nonvolatile solute on the boiling point of water. Three trials are performed in which 10 mg, 20 mg and 30 mg of salt...

Question 1 Correct 4.00 points out of 4.00 The SI base unit of mass is Select one: A. g. B. metric ton. C. mg. D. lb. E. kg. Question 2 Correct 4.00 points out of 4.00 The boiling point for liquid nitrogen is 77 K. What is the temperature in degrees Fahrenheit? Select one: A. –289°F B. –321°F C. –127°F D. 662°F E. 177°F Straighterline CHEM101 General Chemistry I Midterm Exam (New Version June 2024) We are a team of experts offering class attendance for all Stra...