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How many calories are required at 0 degree Celsius to melt an ice cube with a mass of g?
What you need is the enthalpy of fusion for ice and simply multiply it by your mass. An online search shows that the enthalpy of fusion for ice is: 79.72 cal/g So calories needed to melt all your ice is just. Energy = 79.72cal/g x 25g = 242.50 calories
How is the h vaporization used to calculate the mass of liquid boiled by on of energy?
The specific enthalpy of vaporization (usually represented by the letter H with a carat above it) is generally given as units of energy per unit mass or per mole. If given in terms of per unit mass, the mass boiled can be calculated by dividing the energy input by the specific enthalpy. If given in terms of per mole, first divide the energy by the specific enthalpy then multiply the result by the mass per mole.
What organism is an intermediate in the life cycle of Trypanosoma?
The tsetse fly is an intermediate host in the life cycle of Trypanosoma, a parasitic protozoan that causes diseases like African trypanosomiasis in humans and animals. Trypanosomes develop and multiply in the gut of the tsetse fly before being transmitted to a mammalian host through its bite during a blood meal.
What is the enthalpy change for 5O2 plus C3H8 to 3CO2 plus 4H2O?
typically you will be given values for the heat necessary/released by each when it is created (H2O and CO2) and when its used (C3H8).. then balance the equation and multiply the coefficients by energy used for each element, then subtract one side from the other to get an answer... remember 02 will not have an amount of KJ released.
When are the quantites molar enthalpies of fusion and molar enthalpy of vaporation used?
Fusion refers to the phase change from liquid to solid (or vv) and vaporization refers to the phase change from liquid to gas (or vv). Heat is either absorbed or released from the substance when these events occur. We use the molar enthalpies to calculat exactly how much heat is transferred during these processes. Ex .. If we are to boil (vaporize) 3 moles of some substance with a known molar enthalpy of vaporization of 120 KJ/mole then we multiply. 3 moles x 120 KJ/mole = 360 KJ of energy is needed for the vaporization to take place.
If you multiply the following reaction by 2 to be an intermediate reaction in a Hess's law problem what would be the final value for the enthalpy of reaction you use for this intermediate reaction?
When you multiply a reaction by a factor, you also multiply the enthalpy change by the same factor. Therefore, if you multiply the reaction by 2, the final value for the enthalpy of reaction for the intermediate reaction will also be multiplied by 2.
If you need to multiply the following reaction by 2 to be an intermediate reaction in a Hess's law problem what would be the final value for the enthalpy of reaction you use for this intermediate reac?
If you need to multiply the reaction by 2, you must also multiply the enthalpy change by 2. The final value for the enthalpy of the reaction used for the intermediate reaction would be 2 times the original enthalpy value.
If you need to multiply the reaction by 2 to be an intermediate reaction in a hess law problem what would be the final value for the enthalpy of reaction you use for this intermediate reaction?
-572k
If you need to reverse the following reaction and multiply it by 2 in order for it to be an intermediate reaction in a Hess's law problem what would be the final value for the enthalpy of reaction yo?
2820 kJ
If you need to reverse the following reaction and multiply it by 2 in order for it to be an intermediate reaction in a Hess's law problem what would be the final value for the enthalpy of reaction you?
If you need to reverse a reaction and multiply it by 2 in Hess's law, the enthalpy change of the reaction will also change sign and double in magnitude. This is because reversing a reaction changes the sign of the enthalpy change. Multiplying the reaction by a factor also multiplies the enthalpy change by that factor. Therefore, the final value for the enthalpy of the reaction will be twice the original magnitude but with the opposite sign.
What is the difference between enthalpy change and enthalpy change per mole?
Enthalpy is the energy absorbed or lost from a reaction, but enthalpy change per mole is the amount of energy lost per mole, so in order to get the overall enthalpy from the change per mole, you must multiply that value by the amount of moles used in the reaction.
How many calories are required at 0 degree Celsius to melt an ice cube with a mass of g?
What you need is the enthalpy of fusion for ice and simply multiply it by your mass. An online search shows that the enthalpy of fusion for ice is: 79.72 cal/g So calories needed to melt all your ice is just. Energy = 79.72cal/g x 25g = 242.50 calories
How do you convert the following units of 2kilometer to meter?
You multiply by 1000.
What does the arithmetic operator do in Excel?
The following are valid Excel operations for arithmetic in Excel:+ (plus)- (minus)/ (divide)* (multiply)^ (power of)The following are valid Excel operations for arithmetic in Excel:+ (plus)- (minus)/ (divide)* (multiply)^ (power of)The following are valid Excel operations for arithmetic in Excel:+ (plus)- (minus)/ (divide)* (multiply)^ (power of)The following are valid Excel operations for arithmetic in Excel:+ (plus)- (minus)/ (divide)* (multiply)^ (power of)The following are valid Excel operations for arithmetic in Excel:+ (plus)- (minus)/ (divide)* (multiply)^ (power of)The following are valid Excel operations for arithmetic in Excel:+ (plus)- (minus)/ (divide)* (multiply)^ (power of)The following are valid Excel operations for arithmetic in Excel:+ (plus)- (minus)/ (divide)* (multiply)^ (power of)The following are valid Excel operations for arithmetic in Excel:+ (plus)- (minus)/ (divide)* (multiply)^ (power of)The following are valid Excel operations for arithmetic in Excel:+ (plus)- (minus)/ (divide)* (multiply)^ (power of)The following are valid Excel operations for arithmetic in Excel:+ (plus)- (minus)/ (divide)* (multiply)^ (power of)The following are valid Excel operations for arithmetic in Excel:+ (plus)- (minus)/ (divide)* (multiply)^ (power of)
How is the h vaporization used to calculate the mass of liquid boiled by on of energy?
The specific enthalpy of vaporization (usually represented by the letter H with a carat above it) is generally given as units of energy per unit mass or per mole. If given in terms of per unit mass, the mass boiled can be calculated by dividing the energy input by the specific enthalpy. If given in terms of per mole, first divide the energy by the specific enthalpy then multiply the result by the mass per mole.
Answer the following is 3 a multiple of 6?
Yes, if you multiply 6 by 0.5
How many milliseconds are in 2.5 minutes?
Multiply all of the following:2.5 (minutes) 60 (seconds per minute)1000 (milliseconds per second).Multiply all of the following:2.5 (minutes)60 (seconds per minute)1000 (milliseconds per second).Multiply all of the following:2.5 (minutes)60 (seconds per minute)1000 (milliseconds per second).Multiply all of the following:2.5 (minutes)60 (seconds per minute)1000 (milliseconds per second).
