Concept explainers
Problem 1-1
Multiply:
(a)
(b)
Divide:
(a)
(b)
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Chapter 1 Solutions
Bundle: Introduction to General, Organic and Biochemistry, 11th + OWLv2, 4 terms (24 months) Printed Access Card
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- If an initial temperature is 20.00℃ and the final temperature is 27.086365℃. What is the correct sig fig value of the temperature change? Delta T = 27.086365℃ – 20.00℃ = 7.086365℃. Select one: a. none of these b. 7.0℃. c. 7.08637℃. d. 7.1℃. e. 7.086℃. f. 7.09℃. g. 7.086365℃. h. 7.08℃.arrow_forwardAnswer 3,4,5 plsarrow_forwardANSWER (D) (a) The recommended daily allowance (RDA) of the trace metal magnesium is 410mg/day for males. Express this quantity in g/day. (b) For adults, the RDA of theamino acid lysine is 12 mg per kg of body weight. How many grams per day shoulda 75 kg adult receive? (c) A typical multivitamin tablet can contain 2.0 mg of vitaminB2 (riboflavin), and the RDA is 0.0030 g/day. How many such tablets should a persontake each day to get the proper amount of this vitamin, assuming that he gets nonefrom any other sources? (d) The RDA for the trace element selenium is 0.000070g/day. Express this dose in mg/day.arrow_forward
- Consider the following unbalanced reaction: XNO3 (aq) + CaCl2 (aq) -> XCl (s) + Ca(NO3)2 (aq) If 30.8 g of CaCl2 produced 79.6 g of XCl, determine the identity of X. Quantify your response.arrow_forwardanswer #4 plz I included number 3 for referencearrow_forwardWhich of the following is a correct pairing of concepts? a. gram, metric unit of mass b. liter, metric unit of length c. meter, metric unit of volume d. no correct responsearrow_forward
- In which of the following cases is the given number correctly rounded to three significant figures? a. 0.01136 becomes 0.0113 b. 32.57 becomes 32.6 c. 1.2001 becomes 1.21 d. no correct responsearrow_forwardWhich of the Sub stance what do you say are a mixture unknown one known 4, known 7 all three optionarrow_forwardanswer is 2.3 x 10(to the power of -3) M Don't know how to get to the answerarrow_forward
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