A substance is known to be homogeneous, pure and incapable of being converted into a simpler...
A substance is known to be homogeneous, pure and incapable of being converted into a simpler substance by physical methods. On this basis, the substance is
Homework Answers
An element is a pure homogenous substance which is formed of atoms of same kind and cannot be broken into simpler substance by physical or chemical methods.
So Ans is ELEMENT
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A substance is known to be homogeneous, pure and incapable of
being converted into a simpler...
why it is simpler to identify a pure substance that it is to identify the components...
why it is simpler to identify a pure substance that it is to identify the components of a mixture? what are the advantages of spot tests?
Is it redundant to say that a pure substance is homogeneous, or can it not be...
Is it redundant to say that a pure substance is homogeneous, or can it not be both at the same time, (since homogeneous implies that we're talking about a mixture)?
1. Classify each of the following as a pure substance or a mixture. If it is...
1. Classify each of the following as a pure substance or a mixture. If it is a pure substance, classify it as an element or a compound. If it is a mixture, classify it as homogeneous or heterogeneous. (a) Air (b) Sugar (c) Brass gas (e) Wine (d) (1) Chlorine Soil
4 pc 1. Classify each type of matter as a pure substance or a mixture. If...
4 pc 1. Classify each type of matter as a pure substance or a mixture. If it is a pure substance, classify it as an element or a compound. If it is a mixture, classify it as homogeneous or heterogeneous a mercury in a thermometer b. exhaleda c. chicken noodle soup d Sugar
QUESTION 1 Gatorade is an example of a Heterogeneous Mixture Homogeneous Mixture Compound Pure substance QUESTION...
QUESTION 1 Gatorade is an example of a Heterogeneous Mixture Homogeneous Mixture Compound Pure substance QUESTION 2 A piece of material has a mass of 125.42 g. When the gem is placed in a graduated cylinder containing 50.0 ml. of water, the water level rises to 88.5 mL. What is the density of the gem in g/ml? 3.26g/mL 1.42g/mL 2.84g/mL 0.307g/ml Click Save and Submit to save and submit. Click Save All Answers to save all answers
A 2.69 g sample of a substance suspected of being pure gold is warmed to 72.6...
A 2.69 g sample of a substance suspected of being pure gold is warmed to 72.6 ∘C and submerged into 14.4 g of water initially at 24.9 ∘C. The final temperature of the mixture is 26.8 ∘C. (Assume that the specific heat capacity of water is 4.184 Jg−1∘C−1.) What is the heat capacity of the unknown substance?
A 2.74 g sample of a substance suspected of being pure gold is warmed to 72.1 °C and submerged into a 15.2 g of water i...
A 2.74 g sample of a substance suspected of being pure gold is warmed to 72.1 °C and submerged into a 15.2 g of water initially at 24.7 °C. The final temperature of the mixture is 26.3 °C. What is the heat capacity of the unknown substance? Could the substance be pure gold?
Match the substance with its correct classification. Classifications can be used more than once. A. homogeneous...
Match the substance with its correct classification. Classifications can be used more than once. A. homogeneous mixture B. heterogeneous mixture C. pure substance Iron Sodium Chloride solution seawater, including seaweed and shells
need help 18. (1 point) A 2.74 g sample of a substance suspected of being pure...
need help
18. (1 point) A 2.74 g sample of a substance suspected of being pure gold is warmed up to 72.1 °C and submerged into 15.2 g of water initially at 24.7°C. The final temperature of the mixture is 26.3°C. What is the heat capacity of the unknown substance? Could the substance be pure gold, which has a specific heat capacity of 0.128 J/g°C? 21. (1 point each) Use standard enthalpies of formation (in Appendix G in text) to...
Acetylene, C2H2, can be converted to ethane, C2H6, by a process known as hydrogenation. The reaction...
Acetylene, C2H2, can be converted to ethane, C2H6, by a process known as hydrogenation. The reaction is C2H2(g)+2H2(g)⇌C2H6(g) At 25 ∘C the reaction from ^ has a composition as shown in the table below. Substance Pressure (atm) C2H2(g) 5.35 H2(g) 5.75 C2H6(g) 5.25×10−2 What is the free energy change, ΔG, in kilojoules for the reaction under these conditions? Express your answer numerically in kilojoules.
1. Classify each of the following as a pure substance or a mixture. If it is a pure substance, classify it as an element or a compound. If it is a mixture, classify it as homogeneous or heterogeneous. (a) Air (b) Sugar (c) Brass gas (e) Wine (d) (1) Chlorine Soil
4 pc 1. Classify each type of matter as a pure substance or a mixture. If it is a pure substance, classify it as an element or a compound. If it is a mixture, classify it as homogeneous or heterogeneous a mercury in a thermometer b. exhaleda c. chicken noodle soup d Sugar
QUESTION 1 Gatorade is an example of a Heterogeneous Mixture Homogeneous Mixture Compound Pure substance QUESTION 2 A piece of material has a mass of 125.42 g. When the gem is placed in a graduated cylinder containing 50.0 ml. of water, the water level rises to 88.5 mL. What is the density of the gem in g/ml? 3.26g/mL 1.42g/mL 2.84g/mL 0.307g/ml Click Save and Submit to save and submit. Click Save All Answers to save all answers
need help
18. (1 point) A 2.74 g sample of a substance suspected of being pure gold is warmed up to 72.1 °C and submerged into 15.2 g of water initially at 24.7°C. The final temperature of the mixture is 26.3°C. What is the heat capacity of the unknown substance? Could the substance be pure gold, which has a specific heat capacity of 0.128 J/g°C? 21. (1 point each) Use standard enthalpies of formation (in Appendix G in text) to...
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