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Tag Archives: water

An artesian aquifer is: a groundwater storage area between impermeable layers of rock the upper surface of the saturated zone of groundwater that is under pressure a reservoir found in underground caverns a land area that delivers water into a stream or river system

Hello Darlings! Q) What does riparian mean? Answer Choices) A) Riparian means ripe with agriculture B) Riparian means to have or be near water sources. C) Riparian means ancient or respected D) Riparian means anything of Middle Eastern origin The answer I have for you darlings is: B) Riparian means …

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A wave on the ocean has a wavelength of 200 m, the wave is a deep-water wave __________. only if the water is deeper than 200 m if the water is deeper than 100 m if the water is less than 100 m deep if the water is shallower than 50 m

A wave on the ocean has a wavelength of 200 m, the wave is a deep-water wave __________. only if the water is deeper than 200 m if the water is deeper than 100 m if the water is less than 100 m deep if the water is shallower than …

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You are retrieving your boat from the water. as a courtesy to others, when should you pull your boat into a launch lane?

Answer: 1) Water has very high specific heat. 2) It expands when it freezes 3) ability to dissolve in ionic substances 4) Water molecules at the surface experience fewer hydrogen bonds than water molecules within the liquid. Explanation: 1) Water molecules due to their high specific heat , undergo relatively …

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An object floats on water with 80% of its volume below the surface. the same object when placed in another liquid floats on that liquid with 72% of its volume below the surface. determine the density of the unknown fluid.

Answer: a) The time the police officer required to reach the motorist was 15 s. b) The speed of the officer at the moment she overtakes the motorist is 30 m/s c) The total distance traveled by the officer was 225 m. Explanation: The equations for the position and velocity …

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A 132 g piece of nickel is heated to 100.0 °c in a boiling water bath and then dropped into a beaker containing 877 g of water (density = 1.00 g/cm3) at 5.0 °c. what was the final temperature of the nickel and water after thermal equilibrium was reached

The equation for how temperature changes the resistance R is:  R=R₀(1+α(T-T₀)), where R₀ is the resistance at T₀=20°C, T is the temperature for which we want to calculate the resistance and α is the temperature coefficient for resistance.  The resistance of the copper wire increases by 18% or by 0.18, so the …

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Read this excerpt from margaret frink’s memoir:the deafening noise and halloing that this army of people kept up, made the alarm in the river more intense. the quicksand and the uncertainty of depth of water kept all in a state of anxiety. our horses would sometimes be in water no more than a foot deep; then, in a moment, they would go down up to their collars.what is the mood of this excerpt? a.fun b.relieved c.exhilarating d.stylized

Answer:    Joshua is correct Explanation:  Animals, however well preserved and bred in conditions that are not in nature, that is, not in their natural habitat, animals still retain the animal instinct. Thus, young animals in the wild can be met daily, except for members of their species, and members …

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What does water do for your cpk45 enzymes?

                                          1.04 Properties of Water Question: What effect will adding soap to water have on surface tension?   Hypothesis: If, soap is added to the water slowly dropped on a penny then, the penny will hold more water.   Independent/Dependent/Control Variables: Independent: the amount of soap/oil; Dependent: the penny; Control: …

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Pamela can swim under water for 51 seconds without a breath. Lucy can swim 3/5 minute and kady 8 minute. Who can stay underwater the longest?

So hmmm we’ll start off by using the decimal format for the percentage, thus 15% is just 15/100 or 0.15 and 7% is just 7/100 or 0.07 and so on notice, the concentration of alcohol in the 15% is, well, 0.15 :), so for a quantity of whatever, it’d be …

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In an experiment, a student gently heated a hydrated copper compound to remove the water of hydration. the following data was recorded: 1. mass of the crucible, cover and contents before heating 23.4g. 2. mass of empty crucible and cover. 3. mass of crucible, cover, and contents after heating to constant mass 20.94g

This problem is to apply Roult’s Law. Roult’s Law states that the vapor pressure, p, of a solution of a non-volatile solute is equal to the vapor pressure of the pure solvent, Po solv, times the mole fraction of the solvent, Xsolv p = Xsolv * Po sol X solv …

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A scientist adds heat to each of the following substances. Which will probably absorb the most heat before its temperature changes significantly? 50 g of solid copper 50 g of solid iron 50 g of liquid water 50 g of sand Question 2(Multiple Choice Worth 2 points) A drop of water placed on a smooth, dry surface will form a dome-shaped droplet instead of flowing outward in different directions. Which of these best explains this observation? The bonds between hydrogen and oxygen atoms are very strong. The electrons in the atoms attract the electrons in the other atoms. Water molecules at the surface experience fewer hydrogen bonds than water molecules within the liquid. Water molecules near the surface produce more buoyant force than water molecules within the liquid. Question 3(Multiple Choice Worth 2 points) Which of these best explains what happens when the ionic substance calcium chloride (CaCl2) dissolves in water? The oxygen atoms in the water molecules are attracted to the Ca2+ ions. The oxygen atoms in the water molecules are attracted to the Cl− ions. The hydrogen atoms in the water molecules are attracted to the Ca2+ ions. The oxygen atoms in the water molecules are attracted to the H+ ions. Question 4(Multiple Choice Worth 2 points) Which of these statements about water is true? Its atoms share electrons equally. It can dissolve all known substances. Its molecules are farther apart in the solid state than in the liquid state. It has a lower specific heat than nearly all known metals.

The gravitational force Fg between two objects is given by the equation: Fg=(G*m₁*m₂)/r₂, where G=6.67*10^-11 m³ kg⁻¹ s⁻² is the gravitational constant, m₁ and m₂ are the masses of the two bodies and r is the distance between those bodies.  Due to the gravitational attraction the pencil and the eraser will …

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Areas near oceans or large lakes tend to have more moderate climates than do areas far from large bodies of water. Which of these statements best explains this observation? Hydrogen and oxygen atoms share electrons in a water molecule. Lakes and oceans contain dissolved solids. Water has a very high specific heat. Water produces buoyant forces. Question 2(Multiple Choice Worth 2 points) A scientist discovers a new substance. The molecules of the substance form hydrogen bonds with each other. When the molecules lose a lot of energy, the hydrogen bonds hold them relatively far apart. Based on this information, what can the scientist infer about the substance? It expands when it freezes. It is highly colored. It exists only as a gas. It does not dissolve ionic compounds. Question 3(Multiple Choice Worth 2 points) Which of the following properties of water is due primarily to the uneven distribution of charge between the hydrogen and oxygen atoms? its color its taste its ability to dissolve ionic substances its ability to produce buoyant forces Question 4(Multiple Choice Worth 2 points) A drop of water placed on a smooth, dry surface will form a dome-shaped droplet instead of flowing outward in different directions. Which of these best explains this observation? The bonds between hydrogen and oxygen atoms are very strong. The electrons in the atoms attract the electrons in the other atoms. Water molecules at the surface experience fewer hydrogen bonds than water molecules within the liquid. Water molecules near the surface produce more buoyant force than water molecules within the liquid.

The gravitational force Fg between two objects is given by the equation: Fg=(G*m₁*m₂)/r₂, where G=6.67*10^-11 m³ kg⁻¹ s⁻² is the gravitational constant, m₁ and m₂ are the masses of the two bodies and r is the distance between those bodies.  Due to the gravitational attraction the pencil and the eraser will …

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PLZ HURRY BOIIII Q: Read the sentence. There is a swimming pool in our backyard, but it contains no water. This is an example of a A) simple sentence. B) compound sentence. C) complex sentence. D) compound-complex sentence. I WILL GIVE BRAINLIEST +20 POINTS

Hey there! Correct answer is D. Comma or Period Inside Rule A. Question mark or exclamation point inside: those are not really necessary. B. Colon or semicolon: not, a semicolon would divide the whole sentence and it would be shorten; a colon would work but after requested, when there is …

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After visiting a nature center, students were asked to contrast their observations based on location. Which of these students followed those directions? a. Amy: wildlife in or near water = turtles, crayfish, goldfish non-water wildlife = fox, deer, bobcat b. Craig: wildlife with hair or fur = fox, deer, bobcat wildlife without hair or fur = turtle, crayfish, goldfish c. Megan: mammals = fox, deer, bobcat other = turtle, crayfish, goldfish d. Luke: observed = fox, deer, bobcat, turtle, crayfish, goldfish not observed = water snake, squirrel

Answer: The correct answer is a. Amy: wildlife in or near water = turtles, crayfish, goldfish non-water wildlife = fox, deer, bobcat. Explanation: According to the question students were asked to contrast their observations based on the location so according to the location, animals should be differentiated into water animals …

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The aroma of the freshly baked cookies in the kitchen made my mouth water. They smelled like sweet, sugary paradise. Which literary device is used in this sentence? imagery irony symbolism characterization

The aroma of the freshly baked cookies in the kitchen made my mouth water. They smelled like sweet, sugary paradise. Which literary device is used in this sentence? imagery irony symbolism characterization

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A 5.45-g combustible sample is burned in a calorimeter. the heat generated changes the temperature of 555 g of water from 20.5°c to 39.5°c. how much energy is released by the burning? the specific heat of water is 4.18 j/ (°c × g). 564 j 2,500 j 44,100 j 138,000 j

A 5.45-g combustible sample is burned in a calorimeter. the heat generated changes the temperature of 555 g of water from 20.5°c to 39.5°c. how much energy is released by the burning? the specific heat of water is 4.18 j/ (°c × g). 564 j 2,500 j 44,100 j 138,000 …

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Calculate the vapor pressure of a solution containing 27.2 g of glycerin (c3h8o3) in 132 ml of water at 30.0 ?c. the vapor pressure of pure water at this temperature is 31.8 torr. assume that glycerin is not volatile and dissolves molecularly (i.e., it is not ionic) and use a density of 1.00 g/ml for the water.

Explanation : In the net ionic equations, we are not include the spectator ions in the equations. Spectator ions : The ions present on reactant and product side which do not participate in a reactions. The same ions present on both the sides. (a) The given balanced ionic equation is, …

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A 1.50-g sample of hydrated copper(ii) sulfatewas heated carefully until it had changed completely to anhydrous copper(ii) sulfate () with a mass of 0.957 g. determine the value of x. [this number is called the number of waters of hydration of copper(ii) sulfate. it specifies the number of water molecules per formula unit of in the hydrated crystal.]

This problem is to apply Roult’s Law. Roult’s Law states that the vapor pressure, p, of a solution of a non-volatile solute is equal to the vapor pressure of the pure solvent, Po solv, times the mole fraction of the solvent, Xsolv p = Xsolv * Po sol X solv …

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A copper calorimeter can with mass 0.100 kg contains 0.160 kg of water and 0.0180 kg of ice in thermal equilibrium at atmospheric pressure. if 0.750 kg of lead at 255c is dropped into the calorimeter can, what is the final temperature

The equation for how temperature changes the resistance R is:  R=R₀(1+α(T-T₀)), where R₀ is the resistance at T₀=20°C, T is the temperature for which we want to calculate the resistance and α is the temperature coefficient for resistance.  The resistance of the copper wire increases by 18% or by 0.18, so the …

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Identify the phase in which the water molecules are closest together. identify the phase in which the water molecules are closest together. liquid gas solid dry ice

This problem is to apply Roult’s Law. Roult’s Law states that the vapor pressure, p, of a solution of a non-volatile solute is equal to the vapor pressure of the pure solvent, Po solv, times the mole fraction of the solvent, Xsolv p = Xsolv * Po sol X solv …

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An isthmus is a narrow strip of land that is bordered by water on each side, and that connects two larger pieces of land. how does this differ from a tombolo?

Hello Darlings! Q) What does riparian mean? Answer Choices) A) Riparian means ripe with agriculture B) Riparian means to have or be near water sources. C) Riparian means ancient or respected D) Riparian means anything of Middle Eastern origin The answer I have for you darlings is: B) Riparian means …

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Where are sedimentary rocks formed? at earth's surface only deep within earth only both within earth and at earth's surface either at earth's surface or in bodies of water?

Where are sedimentary rocks formed? at earth’s surface only deep within earth only both within earth and at earth’s surface either at earth’s surface or in bodies of water?

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14 g of sugar is dissolved in 100 mL of water. What is the mass of the new system? Question 2 options: a) 114 g b) 100 g c) 86 g d) 107 g

This problem is to apply Roult’s Law. Roult’s Law states that the vapor pressure, p, of a solution of a non-volatile solute is equal to the vapor pressure of the pure solvent, Po solv, times the mole fraction of the solvent, Xsolv p = Xsolv * Po sol X solv …

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