Al2so4+NaOH =Naso4+AlOH= so I think it’s B not sure
Answer:
The three methods of heat transfer include: conduction, convection, and radiation. It is through one of these processes of heat transfer that the air temperature over water is warmer than the water over land during the winter months. You'll notice on the graph, that January (month 1) and February (month 2) water temperatures are about 20 degrees while the respective air temperatures are about 15 degrees. This is a 5 degree difference in temperature between the air and the water at the same geographical location. Which process do you believe to be the cause of the air temperature differences between land surfaces and a body of water? A) Heat goes directly from water to air through conduction. B) The heat of the ocean is being radiated into the air through the process of radiation. C) Cooler air is replaced by warmer air rising from the surface in the process of convection. D) Heat is transferred through the circulation of the water through the atmosphere in the process of convection.
Explanation:
pls make me brainliest
Answer:
Metal cylinder: Work is <em>positive</em>
Foam: Heat is <em>positive</em>.
Explanation:
Work is done as a resultant force acts along a displacement. Heat is the flow of energy from one body to another, resulting in a either a rise or a drop in temperature of the bodies. Work and Heat are forms of energy and they can either be assigned a positive or negative sign with respect to a thermodynamic system.
If work is done on a body (thermodynamic system), the work is negative. On the other hand, if work is done by the body, it is termed as a positive work. Heat is positive when it flows into a thermodynamic system and negative when it is lost by the system.
In this case, though the metal cylinder is rolled up a ramp, the metal cylinder does a positive work along the displacement. Considering the foam, heat is gained by the foam (thermodynamic system) as it cools the environment, thus, heat is positive.
Explanation:
A balance chemical equation is a representation of a chemical reaction in which reactants are written on left hand side followed by arrow pointing in right direction along with product on the right-hand side. A balanced chemical equation follows the law of conservation of mass.
The balanced chemical equation for decomposition of nitroglycerin is given as:
4 moles of nitroglycerin on decomposition gives 6 mole of dinitrogen, 1 mole of dioxygen, 10 moles of water and 12 moles of carbon dioxide.