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Tag Archives: water

The protein that maintains proper proportion and concentration of water in blood is

Answer: Helicases unwind the two parental DNA’s strands and creates the replication fork; single strand binding proteins keep the single strand from joining. Further information: • DNA replication: a biological method occurring in all living organisms that is the basis for biological inheritance • Helicase: It is an enzyme that …

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How much water to add to 80 lb bag of concrete?

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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It’s very common to have paint thinner in an auto body repair shop. which would be the most effective way of extinguishing a puddle of thinner that catches fire? a. class a extinguisher b. class c extinguisher c. class b extinguisher d. water hose

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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Which is a typical characteristic of an ionic compound? a. electron pairs are shared among atoms. b. the ionic compound has a low solubility in water. c. the ionic compound is described as a molecule?

Which is a typical characteristic of an ionic compound? a. electron pairs are shared among atoms. b. the ionic compound has a low solubility in water. c. the ionic compound is described as a molecule?

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Tim mixed 2 parts vinegar and 5 parts water to make a cleaning liquid. How many parts of vinegar did Tim mix with each part of water?

The triangle ABC is similar to triangle LMP. The order here is very important. The letters correspond to one anotherA corresponds to L (first letters of each sequence) B corresponds to M (second letters of each sequence)C corresponds to P (third letters of each sequence) In a similar fashion, the segments …

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Identify the sentence that has faulty parallel structure. Michael’s favorite sports are skiing, surfing, and to snow board. I have always wanted to learn to water ski and to surf.

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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50 POINTS AND WILL MAKE BRAINLEIST Describe the relationship between heat capacity and the temperature change of a swimming pool, Lake Michigan, and a glass of water exposed to the same amount of sunlight for the same 12 hour time period. (Hint: would one change more than the others, would any remain unchanged, or would the all remain the same)

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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Which characteristic of water allows its molecules to form hydrogen bonds? The water molecule is polar. Water has a low specific heat. Ionic bonds hold the water molecule together. Water expands as it freezes.

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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Calcium fluoride (CaF2) has a solubility constant of 3.45 x 10-11 . What is the molar solubility of CaF2 in water? 4.15 x 10-6 M 5.87 x 10-6 M 2.05 x 10-4 M 3.26 x 10-4 M

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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Read the scenario. Imagine you are at a gas station to put some gas in a car, and you see the following directions. Turn off car engine. Gas is extremely flammable. Do not use cell phones, other electronic devices, or anything that could cause sparks or a flame. Pay with credit card at pump or pre-pay inside store. After making payment, remove nozzle and select the grade of gasoline desired. Remain at your vehicle as you pump gas. When finished, return nozzle to pump. Collect change and receipts inside store. According to these directions, which of the following is true? 1. If you do not have a credit card, you can pre-pay for the gas inside the store. 2. MP3 players should not be used as you pump gas, but it is okay to use a cell phone. 3. If you want to purchase a bottle of water while pumping gas, you should enter the store while the nozzle is in your car to save time. 4.If you want a receipt, push “yes” at the pump and one will be printed.

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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Does decomposing water require high activation energy

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 average person should drink this amount of water daily

                                          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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A beaker contain 200mL of water What is its volume in cm3 and m3

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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I am going to mix a gallon bucket of window cleaner. The instruction direct you mix 1 part cleaner to 3 parts water. How much cleaning solution will I need to use

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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An oasis can be described as a small __________. A. tropical desert B. tropical jungle C. area of land in the ocean D. area of water in the desert

An oasis can be described as a small __________. A. tropical desert B. tropical jungle C. area of land in the ocean D. area of water in the desert

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In a solution of salt and water, if the water can’t dissolve anymore salt, the solution is described as which of the following? a. soluble b. supersaturated c. unsaturated d. saturated

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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Calculate the molar enthalpy change of H2O (l) when liquid water is heated from 41.7 C to 76.2 C

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 1.0 liter pot is filled with water at sea level and is brought to a boil. the same pot is filled with water at 5,000 feet above sea level and is brought to a boil. assuming the same heat is being applied to the pots and that they are filled with the same amount of water, which pot will boil faster and why?

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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10g of an unknown compound are added to water to form a 7.89 molar solution. if 2 liters of solution are present, what is the molar mass of the unknown compound?

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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If you combine 240.0 mL of water at 25.00 °C and 120.0 mL of water at 95.00 °C, what is the final temperature of the mixture? Use 1.00 g/mL as the density of water.

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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Ep-40 if you run aground in an outboard boat and you are not taking on water, what is the first step in attempting to free your vessel?

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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A metal smith pours 3.00 kg of lead shot at 99oc into 1.00 kg of water at 25oc in an isolated container. what is the final temperature of the mixture?

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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[06.01]the same amount of heat is added to 100 g of water and 1 kg of water starting at the same temperature. what will happen?

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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