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Constant-pressure calorimeters can be calibrated by electrical heating When a calorimeter containing 125 mL of water is supplied with 4690 J of electrical energy its temperature rises from 21.4oC to?
First, calculate the water's mass by multiplying its density with volume. Next divide the energy supplied with (massXwater's specific heat) to find the rise in temperature. Add the result to the initial temperature to get the final temperature
Does volume of water affect temperature rise in reaction between calcium oxide and water?
Yes, the volume of water can affect the temperature rise in the reaction between calcium oxide and water. A larger volume of water can absorb more heat energy released during the reaction, resulting in a lower temperature rise compared to a smaller volume of water. Additionally, the concentration of the resulting calcium hydroxide solution can also influence the temperature change.
In Part B of the experiment a student mixes 25.0 mL of 1.1 M HCl (aq) with 25.0 mL of 1.000 M NaOH (aq) in a well-insultated calorimeter and observes that the temperature of the solution increases by?
In Part B of the experiment, a student mixes 25.0 mL of 1.1 M HCl (aq) with 25.0 mL of 1.000 M NaOH (aq) in a well-insultated calorimeter and observes that the temperature of the solution increases by 6.90 °C. (These are similar conditions as the previous two problems.) How many moles of water are formed?
How does the solubility of a substance change with a rise in temperature?
With a rise of temperature, the solubility increases
Does the volume of water affect the temperature rise in the reaction of calcium oxide and water?
The volume of water does not significantly affect the temperature rise in the reaction of calcium oxide and water. The temperature increase is primarily due to the exothermic nature of the reaction between calcium oxide and water, where heat is released. The amount of heat released is determined by the stoichiometry of the reaction, not the volume of water used.
A 0.48g sample of graphite is placed in a bomb calorimeter with an excess of oxygen The water and calorimeter are at 25 c The graphite is ignited and burned and the water temperature rises to 28.05c?
The heat released by burning the graphite can be calculated using the temperature rise of the water and the heat capacity of the calorimeter. Firstly, calculate the heat absorbed by the water: Q = m * c * ΔT, where m is the mass of water and c is its specific heat capacity. Then, subtract the heat absorbed by the water from the total heat released by the graphite to find the heat produced by the combustion of the graphite.
How does a scientist find out how much energy is in food?
By burning a dried sample of it in a device called a "bomb calorimeter" with pure oxygen and measuring how much heat is released by the temperature rise in a water jacket around the "bomb".
How would you explain the temperature rise in the water?
The temperature rise because of the gangnam dance
Constant-pressure calorimeters can be calibrated by electrical heating When a calorimeter containing 125 mL of water is supplied with 4690 J of electrical energy its temperature rises from 21.4oC to?
First, calculate the water's mass by multiplying its density with volume. Next divide the energy supplied with (massXwater's specific heat) to find the rise in temperature. Add the result to the initial temperature to get the final temperature
What type of calorimeter is junkers caloriemeter?
A Junkers Calorimeter is a device for determining the heating capacity of a gas - that is, how many joules one can get by burning a set volume of that gas. It's usually [natural] gas from the mains, but could be any flammable gas. The device is essentially a Bunsen burner with a cooling jacket. The jacket is cylindrical in shape, about 80cm tall, with water running through it. The burner sits inside the cylinder. The calorimeter allows the user to measure the temperature of water flowing in and flowing out. Once steady-state is reached, with those two temperatures steady, the water flowing through is collected for a specified period of time. Measuring the mass of the water and the temperature rise in the water, the operator can calculate the number of joules which went into the water to heat it. There is a flow meter on the fuel gas, so the operator can also calculate the volume of gas that was burned in the same time period. The amount of energy, in J, available per litre of gas can then be calculated. A Junkers calorimeter is a flow calorimeter, with heat transfer happening continuously, as opposed to a batch calorimeter. The design dates back to the late 1800s.
Will ice rise in temperature straight away when heated?
No, ice will not immediately rise in temperature when heated. Initially, the heat energy will cause the ice to melt and transition into water. Only after the ice has completely melted will the temperature of the water start to rise.
Does volume of water affect temperature rise in reaction between calcium oxide and water?
Yes, the volume of water can affect the temperature rise in the reaction between calcium oxide and water. A larger volume of water can absorb more heat energy released during the reaction, resulting in a lower temperature rise compared to a smaller volume of water. Additionally, the concentration of the resulting calcium hydroxide solution can also influence the temperature change.
In Part B of the experiment a student mixes 25.0 mL of 1.1 M HCl (aq) with 25.0 mL of 1.000 M NaOH (aq) in a well-insultated calorimeter and observes that the temperature of the solution increases by?
In Part B of the experiment, a student mixes 25.0 mL of 1.1 M HCl (aq) with 25.0 mL of 1.000 M NaOH (aq) in a well-insultated calorimeter and observes that the temperature of the solution increases by 6.90 °C. (These are similar conditions as the previous two problems.) How many moles of water are formed?
Does the mass of water affect temperature rise?
Yes due to something called 'specific heat capacity', this is basically that the more water there is, the hotter it can get.
What links are there between the temperature rise of water and the temperature of its surroundings?
Go on bitesize.
What is the method for the link between water rise and temperature rise?
oppan gangnam style
How do you find the food caloric of one tablespoon of peanut butter with a mass of 16 grams that is combusted in a calorimeter with a heat capacity of 120 and the heat rises from 22.2 to 25.4?
Typically calorimeters combust 1 gram of material and are designed for a specific heat rise of x calories per degree Centigrade rise. With the information given this is unknown. How many grams of water were heated? how much peanut butter was actually combusted? With the given information and assumptions of a standard calorimeter (1000 calories per degree rise), [880 grams water, plus the 120 calorie/ degree heat capacity], I can only estimate that a 1 gram sample giving a 3.2 degree rise, gave off 3200 calories to the calorimeter. this is the equivalent of 3.2 "food calories" per gram. [Kcal]. Thus a 16 gram spoonful would contain 51.2 Kcal.
