Homework Answers
ANSWER (a) 66% Silver &
(e) 34% Gold are correct
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A coin, made of gold and silver, was divided into two pieces and the smaller piece...
A coin, made of gold and silver, was divided into two pieces and the smaller piece...
A coin, made of gold and silver, was divided into two pieces and the smaller piece has volume of 1/4 of the whole. If the smaller piece contains 20% gold by volume, and the larger piece has density of 10% higher than the smaller piece, Calculate the metal composition of the larger piece (per cents of silver and gold). Density of gold; 19.32 t/m3 Density of silver; 10.5 t/m3
Red gold is a gold‑copper alloy used to make jewelry. A piece of jewelry made of...
Red gold is a gold‑copper alloy used to make jewelry. A piece of jewelry made of red gold weighs 9.53 g and has a volume of 0.694 cm. Gold has a density of 19.3 g/cm and copper has a density of 8.96 g/cm. Calculate the percentage by mass of each metal in the jewelry. Assume the total volume of the jewelry is the sum of the volumes of the two metals it contains. Pure gold is defined as having 24...
Red gold is a gold‑copper alloy used to make jewelry. A piece of jewelry made of...
Red gold is a gold‑copper alloy used to make jewelry. A piece of jewelry made of red gold weighs 8.35 g and has a volume of 0.581 cm3. Gold has a density of 19.3 g/cm3 and copper has a density of 8.96 g/cm3. Calculate the percentage by mass of each metal in the jewelry. Assume the total volume of the jewelry is the sum of the volumes of the two metals it contains. gold: % : copper: % : Pure...
Red gold is a gold-copper alloy used to make jewelry. A piece of jewelry made of...
Red gold is a gold-copper alloy used to make jewelry. A piece of jewelry made of red gold weighs 8.40 g and has a volume of 0.604 cm?. Gold has a density of 19.3 g/cm² and copper has a density of 8.96 g/cm². Calculate the percentage by mass of each metal in the jewelry. Assume the total volume of the jewelry is the sum of the volumes of the two metals it contains. gold: copper: Pure gold is defined as...
Red gold is a gold‑copper alloy used to make jewelry. A piece of jewelry made of...
Red gold is a gold‑copper alloy used to make jewelry. A piece of jewelry made of red gold weighs 8.80 g and has a volume of 0.594 cm3. Gold has a density of 19.3 g/cm3 and copper has a density of 8.96 g/cm3 . Calculate the percentage by mass of each metal in the jewelry. Assume the total volume of the jewelry is the sum of the volumes of the two metals it contains. gold: % copper: % Pure gold...
ID Problems 46) A piece of silver (Ag) metal weighing 194.3 g is placed in a...
ID Problems 46) A piece of silver (Ag) metal weighing 194.3 g is placed in a graduated cylinder containing 242.0 mL of water. The volume of water now reads 260.5 mL. From these data calculate the density of silver 47) The following procedure was used to determine the volume of a flask. The flask was weighed dry and then filled with water. If the masses of the empty flask and filled flask were 56.12 g and 87.39 g, respectively, and...
14) Which of the following is NOT a typical electrical component? A) Resistor B) Capacitor C)...
14) Which of the following is NOT a typical electrical component? A) Resistor B) Capacitor C) Megatron Inductor E) Transformer D) 23) Convert 6.8 x 10-5 W to the closest standard metric prefix. A) 68 °W B) 0.68 uW C) 680 uW D) 6.8 uw 24) Convert 3.95 x 10-4 A to the closest standard metric prefix. A) 3.95 mA 39.5 mA 0.395 mA D 395 mA Convert the following: 25) 2 x 10-3 Amp = A) 2 microamps 2...
What are the instruments that have been utilized for the review article discussions? ` 1. Introduction...
What are the instruments that have been utilized for the
review article discussions?
`
1. Introduction In recent years, nanoclays have been the object of particular interest for many scientists and researchers in chemistry, physics, engineering and biology due to their excellent properties as well as their sustain- ability [1-3]. For instance, they represent the starting point to the de velopment of smart materials for drug delivery (4-9), food packaging [10-12), environmental remediation and wastewater treatment [13], cultural heritage [14–17and...
1. When it comes to financial matters, the views of Aristotle can be stated as:...
1. When it comes to financial matters, the views of Aristotle can be stated as: a. usury is nature’s way of helping each other. b. the fact that money is barren makes it the ideal medium of exchange. c. charging interest is immoral because money is not productive. d. when you lend money, it grows more money. e. interest is too high if it can’t be paid back. 2. Since 2008, when the monetary base was about $800 billion,...
1. Which of the following is not considered a nutrient a Vitamin B. Water c.Carbohydrate (d)...
1. Which of the following is not considered a nutrient a Vitamin B. Water c.Carbohydrate (d) Alcohol e Mineral 2. For which of the following causes of death does a person's diet play a part? a. Lung disease (6) Cancer Chronic lower respiratory diseases d. Infections of the blood e AIDS 3. Researchers repeatedly report that people who consume a variety of foods such as fruits, vegetables, legumes, nuts, and whole grains have reduced risks of which of the following...
A coin, made of gold and silver, was divided into two pieces and the smaller piece has volume of 1/4 of the whole. If the smaller piece contains 20% gold by volume, and the larger piece has density of 10% higher than the smaller piece, Calculate the metal composition of the larger piece (per cents of silver and gold). Density of gold; 19.32 t/m3 Density of silver; 10.5 t/m3
Red gold is a gold-copper alloy used to make jewelry. A piece of jewelry made of red gold weighs 8.40 g and has a volume of 0.604 cm?. Gold has a density of 19.3 g/cm² and copper has a density of 8.96 g/cm². Calculate the percentage by mass of each metal in the jewelry. Assume the total volume of the jewelry is the sum of the volumes of the two metals it contains. gold: copper: Pure gold is defined as...
ID Problems 46) A piece of silver (Ag) metal weighing 194.3 g is placed in a graduated cylinder containing 242.0 mL of water. The volume of water now reads 260.5 mL. From these data calculate the density of silver 47) The following procedure was used to determine the volume of a flask. The flask was weighed dry and then filled with water. If the masses of the empty flask and filled flask were 56.12 g and 87.39 g, respectively, and...
14) Which of the following is NOT a typical electrical component? A) Resistor B) Capacitor C) Megatron Inductor E) Transformer D) 23) Convert 6.8 x 10-5 W to the closest standard metric prefix. A) 68 °W B) 0.68 uW C) 680 uW D) 6.8 uw 24) Convert 3.95 x 10-4 A to the closest standard metric prefix. A) 3.95 mA 39.5 mA 0.395 mA D 395 mA Convert the following: 25) 2 x 10-3 Amp = A) 2 microamps 2...
What are the instruments that have been utilized for the
review article discussions?
`
1. Introduction In recent years, nanoclays have been the object of particular interest for many scientists and researchers in chemistry, physics, engineering and biology due to their excellent properties as well as their sustain- ability [1-3]. For instance, they represent the starting point to the de velopment of smart materials for drug delivery (4-9), food packaging [10-12), environmental remediation and wastewater treatment [13], cultural heritage [14–17and...
1. Which of the following is not considered a nutrient a Vitamin B. Water c.Carbohydrate (d) Alcohol e Mineral 2. For which of the following causes of death does a person's diet play a part? a. Lung disease (6) Cancer Chronic lower respiratory diseases d. Infections of the blood e AIDS 3. Researchers repeatedly report that people who consume a variety of foods such as fruits, vegetables, legumes, nuts, and whole grains have reduced risks of which of the following...
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