between degrees C to K is? D-321/1.8 of a metal is 13.6 x 10 Kg/m³. The density of the metal is g/cm B. 1.36 C. 136 D. 0.136×105 B. T(K)-273-(°C) D. T(C)-(K)-275.15 efers to how close a measured number is to red numbers me following has the same numbu B. The calculated value D. The true value
between degrees C to K is? D-321/1.8 of a metal is 13.6 x 10 Kg/m³. The density of the metal is g/cm B. 1.36 C. 136 D. 0.136×105 B. T(K)-273-(°C) D. T(C)-(K)-275.15 efers to how close a measured number is to red numbers me following has the same numbu B. The calculated value D. The true value
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
Question
Q 5 please
![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
Q2. The density of a metal is 13.6 x 10 Kg/m³. The density of the metal is ------ g/cm
A.13.6
B. 1.36
C. 136
D. 0.136 x 105
B. T(K)=273-t(°C)
D. T(C)-(K)-275.15
Q3. Accuracy refers to how close a measured number is to
A. zero
C. Other measured numbers
B. The calculated value
D. The true value
Q4. Which of the following has the same number of significant figures as the number 0.00310?
A. 1 x 106
B. 199.791
C. 8.66
D. 5.119
Q5 A combination of sugar, salt, and water is an example of a
A. Homogeneous mixture
C. compound
Q8. Which combination of formula/name is correct.
A. C0203/cobalt (III) oxide
C N₂O/ nitrogen monoxide
B. Heterogeneous mixture
D. pure substance
Q6. How many protons, neutrons, and electrons respectively are
A. 197, 79, 118
C. 79, 118, 118
197
Au
B. 118, 79, 39
D. 79, 118, 117
Q7. How many moles of sulfur atoms are there in 3.0 moles of Al2(SO4)3?
A. 12.0
B. 3.0
C. 4.0
D. 1.0
B. CrO;/chromium (III) oxide
D. Fe₂S3/iron (II) sulfide
Q9. How many oxygen atoms are present in a 5.00 mole sample of Al2(CO3)3?
B. 2.71 x 1024
A. 9.03 x 1024
C. 2.71 x 1025
D. 1.20 x 1025
Q10. Calculate the theoretical yield of ZnCl₂ (M. mas = 136.28 g mol) when 2.50 g HCI (M.
mol) reacts with 3.50 g Zn (molar mas= 65.38 g mol-¹)
A. 4.67 g
B. 7.30 g
Zn(s) + 2HCl(aq) → ZnCl₂(aq) + H₂(g)
C, 9.34g
D, 14.6 g
mas-36.468](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F48ed58b1-dcb7-4b16-9209-abaf1a4086d3%2F971f4817-b46b-4749-ae6b-546c92e5ddde%2Fz9ognug_processed.jpeg&w=3840&q=75)
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
Q2. The density of a metal is 13.6 x 10 Kg/m³. The density of the metal is ------ g/cm
A.13.6
B. 1.36
C. 136
D. 0.136 x 105
B. T(K)=273-t(°C)
D. T(C)-(K)-275.15
Q3. Accuracy refers to how close a measured number is to
A. zero
C. Other measured numbers
B. The calculated value
D. The true value
Q4. Which of the following has the same number of significant figures as the number 0.00310?
A. 1 x 106
B. 199.791
C. 8.66
D. 5.119
Q5 A combination of sugar, salt, and water is an example of a
A. Homogeneous mixture
C. compound
Q8. Which combination of formula/name is correct.
A. C0203/cobalt (III) oxide
C N₂O/ nitrogen monoxide
B. Heterogeneous mixture
D. pure substance
Q6. How many protons, neutrons, and electrons respectively are
A. 197, 79, 118
C. 79, 118, 118
197
Au
B. 118, 79, 39
D. 79, 118, 117
Q7. How many moles of sulfur atoms are there in 3.0 moles of Al2(SO4)3?
A. 12.0
B. 3.0
C. 4.0
D. 1.0
B. CrO;/chromium (III) oxide
D. Fe₂S3/iron (II) sulfide
Q9. How many oxygen atoms are present in a 5.00 mole sample of Al2(CO3)3?
B. 2.71 x 1024
A. 9.03 x 1024
C. 2.71 x 1025
D. 1.20 x 1025
Q10. Calculate the theoretical yield of ZnCl₂ (M. mas = 136.28 g mol) when 2.50 g HCI (M.
mol) reacts with 3.50 g Zn (molar mas= 65.38 g mol-¹)
A. 4.67 g
B. 7.30 g
Zn(s) + 2HCl(aq) → ZnCl₂(aq) + H₂(g)
C, 9.34g
D, 14.6 g
mas-36.468
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