How much heat energy is needed to change 95 g of water at 25^circ C into steam at 100^circ C ? Use 4.2(J)/(gcdot ^circ )C for the specific heat of water. Use 2260J/g for the heat of vaporization of water. (1 point) 2.1times 10^5 3.0times 10^4 1.8times 10^4 2.4times 10^5h) Dans les mécanismes de transmission de mouvement ci-dessous (la roue de gauche étant toujours la menante et celle de droite la menée)indique si la vitesse de rotation de l'organe mené augmente ou diminue. A square square Elle augmente Elle diminueA fire need 16% oxygen in order for it to start. True False24. Explain what happens to the warn negatively charged electroscope when objects with the following charges are brought close to, but are not touching.the electroscope. (a) negative (b) positiveThe DigiMelt apparatus is precise to one decimal place and measures in units of degrees Celsius (^circ C) True FalsePREV 585960616263646566 NEXT
