3. How many calories must you add to raise the temperature of 50 grams of water by 2 degrees C? 4. When water freezes ex
Posted: Wed Jul 06, 2022 11:23 am
3. How many calories must you add to raise the temperature of 50 grams of water by 2 degrees C? 4. When water freezes explain what happens to the surrounding air? 5. Place 1 kg of 20 degree C iron into 1 kg of 40 degree C water. Is the final temperature more than 30 degrees C, less than 30 degrees C or exactly 30 degre C? Explain why? 6. In a mixture of hydrogen gas, oxygen gas and nitrogen gas, which molecules have the greatest average speed? Explain why.