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C. The Q4. Which of the following has the same number of significant figures as the number 1.0310? A. 100.0 B. 199.79 C. 8.66 D. 5.119 olt and water is an example of a mixture

C. The Q4. Which of the following has the same number of significant figures as the number 1.0310? A. 100.0 B. 199.79 C. 8.66 D. 5.119 olt and water is an example of a mixture

Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter1: Matter And Measurements
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Q1. The correct conversion expression between degrees °C to K is? A. T(K)=t(°C) + 273.15 C. T(K)= [t(°C) -32]/1.8 B. T(K) 273-1(°C) D. T(K)-1(°C) Q2. The density of a metal is 13.6 g/cm³. The density of the metal is ------- kg/m³ A.1.36 × 10² B. 1.36 x 104 C. 1.36 × 108 D. 1.36 x 10-5 Q3. Precision refers to how a measured number is close to A. Other measured numbers C. The calculated value B. The true value D. zero Q4. Which of the following has the same number of significant figures as the number 1.0310? B. 199.79 A. 100.0 C. 8.66 D. 5.119 Q5 A combination of sand, salt, and water is an example of a A. Homogeneous mixture C. Compound A. 20p, 20n, and 18 e C. 20 p, 22 n, and 18 e B. Heterogeneous mixture D. Pure substance Q6. How many protons, neutrons, and electrons respectively are in 40 20 Ca² B. 22 p, 20 n, and 20 e D. 22 p, 18 n, and 18 e. -Q8. Which combination of formula/name is incorrect A. FeO/iron (II) oxide CN₂O/ dinitrogen monoxide D. 1.0 Q7. How many moles of oxygen atoms are there in 3.0 moles of Ca3(PO4)2? A. 2.0 C. 4.0 B. 8.0 B. CrO3/chromium (VI) oxide D. Fe2S3/iron (II) sulfide Q9. How many oxygen atoms are present in a 5.00 mole sample of Al2(SO4)3? A.9.03 x 1024 B.3.61 x 1025 C.3.01 x 1024 D. 1.20 mol) when 0.100
Transcribed Image Text:Q1. The correct conversion expression between degrees °C to K is? A. T(K)=t(°C) + 273.15 C. T(K)= [t(°C) -32]/1.8 B. T(K) 273-1(°C) D. T(K)-1(°C) Q2. The density of a metal is 13.6 g/cm³. The density of the metal is ------- kg/m³ A.1.36 × 10² B. 1.36 x 104 C. 1.36 × 108 D. 1.36 x 10-5 Q3. Precision refers to how a measured number is close to A. Other measured numbers C. The calculated value B. The true value D. zero Q4. Which of the following has the same number of significant figures as the number 1.0310? B. 199.79 A. 100.0 C. 8.66 D. 5.119 Q5 A combination of sand, salt, and water is an example of a A. Homogeneous mixture C. Compound A. 20p, 20n, and 18 e C. 20 p, 22 n, and 18 e B. Heterogeneous mixture D. Pure substance Q6. How many protons, neutrons, and electrons respectively are in 40 20 Ca² B. 22 p, 20 n, and 20 e D. 22 p, 18 n, and 18 e. -Q8. Which combination of formula/name is incorrect A. FeO/iron (II) oxide CN₂O/ dinitrogen monoxide D. 1.0 Q7. How many moles of oxygen atoms are there in 3.0 moles of Ca3(PO4)2? A. 2.0 C. 4.0 B. 8.0 B. CrO3/chromium (VI) oxide D. Fe2S3/iron (II) sulfide Q9. How many oxygen atoms are present in a 5.00 mole sample of Al2(SO4)3? A.9.03 x 1024 B.3.61 x 1025 C.3.01 x 1024 D. 1.20 mol) when 0.100
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