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Asked By michael28

Chemistry

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Which of the following solids will have the highest wave speed? one that has a high level of stiffness combined with a low density one that has a low level of stiffness combined with a low density one that has high level of stiffness combined with a high density one that has a low level of stiffness combined with a high density

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Asked By craze

Chemistry

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Which statements describe formations 1 and 2? Select three options. 1. Formation 2 is an intrusion. 2. Formation 1 is an extrusion. 3. Formations 1 and 2 are faults. 4. Formations 1 and 2 are igneous rock. 5. Formations 1 and 2 are the same age as the surrounding layers.

Asked By craze

Chemistry

0Answers

HELPP!!Which statements explain reasons why unconformities occur? Select two options. 1. Rocks along a fault break and move. 2. Igneous rock forms at Earth’s surface. 3. Rocks erode and sediment is deposited. 4. No sediment is deposited over a long time. 5. Igneous rock forms between sedimentary layers.

Asked By craze

Chemistry

0Answers

HELP! IM ON A TIMER! In which situations is the principle of cross-cutting relationships useful in determining relative age? Select three options. 1. A fault breaks through sedimentary layers. 2. The formation of an intrusion in the Earth’s surface. 3. Igneous rock forms between sedimentary layers. 4. Sedimentary layers form over millions of years in a lake bottom. 5. Lava flows form on top of one another from several eruptions over time.

Asked By craze

Chemistry

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Which statements best describe the steps geologists follow to compare rock layers at distant locations? Select three options. 1. Find the absolute age of rocks at both locations. 2. Give a relative age to a layer at one location. 3. Compare a layer at one location to layers at other locations. 4. Identify index fossils in one or more layers at one location. 5. Collect fossils from different locations to study the organisms’ lifestyles.

Asked By craze

Chemistry

1Answers

HELP ME OUT! Which phrases describe organisms that formed index fossils? Select three options. 1. are extinct 2. had hard parts 3. were generally large 4. were alive only for a short time 5. lived in a narrow geographic area

Asked By jamie26

Chemistry

0Answers

Which statement correctly describes the phosphate ion, mc031-1.jpg? It is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion. It is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom. It is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion. It is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a …

Asked By craze

Chemistry

0Answers

In the cycle that shapes Earth’s surface, which event must happen before erosion can occur?

Asked By jakayla0

Chemistry

0Answers

Leutium-176 has a half-life of 3.85 mc012-1.jpg 1010 years. After 1.155 mc012-2.jpg 1011 years, how much leutium-176 will remain from an original 16.8-g sample?

Asked By luna6

Chemistry

0Answers

How is power defined? the total distance an object is moved the direction of the force applied to an object the rate at which work is accomplished the quantity of work accomplished

Asked By oprah

Chemistry

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if people planted huge numbers of trees and other plants, how might the carbon dioxide levels in the graph above change? Explain your answer.

Asked By kyelon

Chemistry

1Answers

How much acceleration is given to a 45 kg child with a 0.75N push on a swing?

Asked By studyhawks

Chemistry

0Answers

Identify the acid-conjugate base pair in this balanced equation: H2SO4 + 2NaOH → 2H2O + Na2SO4

Asked By studyhawks

Chemistry

0Answers

Which of the following is a major drawback of solar energy? The amount of sunlight varies with location, date, and time. Solar cells are harmful to the environment. When burned, solar energy releases harmful toxins. Solar energy is nonrenewable.

Asked By studyhawks

Chemistry

0Answers

Feldspar has a Mohs hardness of 6. Feldspar _____. is harder than a diamond can't be scratched by a diamond can't be scratched by talc is softer than a pencil lead

Asked By studyhawks

Chemistry

0Answers

How would a solution that is labeled “5.0 molar” be similar to one labeled “5.0 molal”?

Asked By studyhawks

Chemistry

0Answers

what Sd can friction do to moving objects?

Asked By studyhawks

Chemistry

1Answers

Oxygen decays to form nitrogen. 15 8 O → 15 7 N + 0 1 e This type of nuclear decay is called

Asked By studyhawks

Chemistry

1Answers

What would be the greatest difference in using an open ceramic coffee mug rather than an insulated mug with a lid as a calorimeter? increased evaporation of the water loss of gaseous reactants inability to contain liquids exchange of energy with the surroundings

Asked By studyhawks

Chemistry

1Answers

n what type of reaction or process does heat flow into the system? combustion exothermic condensation endothermic

Asked By studyhawks

Chemistry

1Answers

Complete combustion of a 0.350 g sample of a compound in a bomb calorimeter releases 14.0 kJ of heat. The bomb calorimeter has a mass of 1.20 kg and a specific heat of 3.55 J/(gi°C). If the initial temperature of the calorimeter is 22.5°C, what is its final temperature? Use . 19.2°C 25.8°C 34.2°C 72.3°C

Asked By studyhawks

Chemistry

0Answers

Which of these did you include in your answer? Check any that apply. I would use calorimetry to determine the specific heat. I would measure the mass of a sample of the substance. I would heat the substance to a known temperature. I would place the heated substance into a coffee-cup calorimeter containing a known mass of water with a known initial temperature. I would wait for the temperature to equilibrate, then calculate temperature change. I would use the temperature change of water to determine the amount of energy absorbed. I would use the amount of energy lost by substance, …

Asked By studyhawks

Chemistry

1Answers

A sample of tin (Cp = 0.227 J/g•°C) is placed in a freezer. Its temperature decreases from 15.0°C to −10.0°C as it releases 543 J of energy. What is the mass of the sample? Round your answer to three significant figures. g

Asked By studyhawks

Chemistry

1Answers

A cube of iron (Cp = 0.450 J/g•°C) with a mass of 55.8 g is heated from 25.0°C to 49.0°C. How much heat is required for this process? Round your answer to three significant figures. J

Asked By studyhawks

Chemistry

1Answers

A sample of ethanol (C2H6O) has a mass of 0.2301 g. Complete combustion of this sample causes the temperature of a bomb calorimeter to increase by 1.33°C. The calorimeter has a mass of 2.000 kg and a specific heat of 2.45 J/g•°C. What is the heat of combustion for this sample? kJ

Asked By studyhawks

Chemistry

0Answers

A gas occupies 200 mL at -73°C. To have the same gas occupy 300 mL: Should the temperature be increased or decreased? What is the new temperature in Kelvins?

Asked By studyhawks

Chemistry

0Answers

A stone weighing 0.7 kilograms rolls down the inclined plane from position A is located at sea level. The difference in the gravitational potential energy of the ball between positions A and B about Joules. (Use PE= m x g x h, where g = 9.8 N/kg)

Asked By studyhawks

Chemistry

0Answers

A 230 g sample of a compound contains 136.6 g of carbon, 26.4 g of hydrogen, and 31.8 g of nitrogen. The rest is oxygen. What is the mass percent of oxygen in the compound? A. 11.48% B. 13.83% C. 13.91% D. 15.30% E. 15.97%

Asked By studyhawks

Chemistry

0Answers

A 1.00 g sample of naphthalene (C10H8) contains 0.562 g of hydrogen. What is the mass percent of carbon in the compound? A. 10.079% B. 12.01% C. 43.8% D. 50.02% E. 56.2%

Asked By studyhawks

Chemistry

0Answers

The sun is located at 1 astronomical unit from Earth. How far is the next closest star to Earth?

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