How do the following examples show heat transfer?
(conduction,convection,and radition) How does a pot of water boiling on the stove show all three types of heat transfer? What type(s) of heat transfer is a cold can of soda becoming warm on a hot day? What type(s) of heat transfer is a microwave oven getting your food hot? Thanks. the last two may have more than one answer aswell
Which of the following is an example of heat transfer?
Which of the following is an example of heat transfer? Ice cubes are crushed into ice chips. A spoon in a cup of hot soup becomes warmer. Macaroni swell in size when left in a pot of water. Two panes of glass are at the same temperature as air trapped between them.
Which of the following is an example of heat transfer by conduction?
Which of the following is an example of heat transfer by conduction A) Water moving in a pot of boiling water B) Warm air rising from hot pavement C) The warmth you feel sitting near a fire D) The warmth you feel holding a cup of hot cocoa PLEASE HELP ME!!!!!!!!!
Which of the following is an example of matter fire,sound,energy or heat?
Fire is oxidation, which involves matter as reactant, product and medium in which to transfer heat. Sound is a Longitudinal wave, which isn't matter itself but can only travel through matter. Energy is hard to explain, but it is to do with forces and can exist in the form of light as photons (and other sub-atomic partcles), which isn't matter and dosn't require matter, but is also transferred through matter. Heat is simply the transfer of energy between matter of different temperatures (different amounts of energy). So fire is matter (the flame is glowing gas), Heat and sound aren't matter, but do require matter to exist, and energy exists both within and without matter (in different forms).
What is an example of heat transfer by convection?
a pot over a flame... the flame touches the bottom of the pot which boils the water inside... which is transferring heat by touch, what convection is
Which of the following windows would be best at slowing the transfer of heat through conduction?
a. two thin panes of glass with nothing (a vacuum) between them b. a single thick pane of glass c. a single thin pane of glass d. two thin panes of glass with air between them
Cooking relies on heat transfer. what is the main type of heat transfer occuring in the following cooking?
Boiling noodles in a pot of water on the stove? convection -- the water gets hot at the bottom of the pot and moves the heat to the noodles Reheating leftovers in the microwave oven? Radiation -- the microwaves heat the food directly Frying an egg in a hot skillet conduction -- the hot skillet is in contact with the egg however the skillet is heated either with convection from a gas flame or conduction from an electric heating element.
Consider the following reaction: 2CH3OH(g) -> 2CH4(g) + O2 (g) delta H= +252.8 kJ?
2CH3OH(g) -> 2CH4(g) + O2 (g) delta H= +252.8 kJ. b.) Calculate the amount of heat transferred when 21.0g of CH3OH(g) is decomposed by this reaction at constant pressure. c.) For a given sample of CH3OH, the enthalpy change during the reaction is 82.1kJ . How many grams of methane gas are produced? d.) How many kilojoules of heat are released when 38.4g of CH4 reacts completely with O2(g) to form CH3OH(g) at constant pressure? Thank you