Chemistry, 30.11.2020 19:20 20alyssityh224
Heat energy is useful to us in all the following ways except:
Heat energy can be harnessed to warm homes.
Heat is converted to mechanical energy in engines to do work.
Heat energy can be used to melt materials and change their shape to create useful objects.
Heat energy is transferred to cooler objects to reduce the temperature of those objects.
Answers: 3
Chemistry, 21.06.2019 14:00, fgcherubin
Consider the balanced equation below. n2h4 + 2h2o2 n2 + 4h2o what are the mole ratios of hydrazine (n2h4) to hydrogen peroxide (h2o2) and hydrazine to water? 1: 2 and 1: 4 1: 3 and 1: 4 1: 2 and 3: 5 1: 3 and 3: 5
Answers: 3
Chemistry, 22.06.2019 12:00, Alexislol7908
From the options provided for each element below, choose the properties that it may have based on its location in the periodic table fluorine (f): highly reactive nonmetal shiny a conductor
Answers: 1
Chemistry, 22.06.2019 17:10, hahahwha
Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]
Answers: 2
Heat energy is useful to us in all the following ways except:
Heat energy can be harnessed to warm...
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