18.1 Heat and Matter: Heat on the Move Exercise 72
A. Below are descriptions of things people do to get warm.
On the first line below each description, write whether
heat moved through a solid,
liquid, or gas to reach the
person. Then, on the second line, write the word
conduction, convection, or radiation to describe how the
heat was passed along.
1. Randy held a warm towel to his face.
2. Ali added some hot water to his bath.
3. Judith stood in the rays of the sun.
Alicia hugged her dog

Determine the number o moles of ions/atoms/particle in the following: 2.50 miles of k2s (let me know how to do)

The yearly amounts of carbon emissions from cars in belgium are normally distributed with a mean of 13.9 gigagrams per year and a standard deviation of 5.8 gigagrams per year. find the probability that the amount of carbon emissions from cars in belgium for a randomly selected year are between 11.5 gigagrams and 14.0 gigagrams per year. a. 0.340 b. 0.660 c. 0.167 d. 0.397

Cryolite, na3alf6(s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. start this question by first balance the chemical equation.1.) balance the equation: - alo3(s)+naoh(l)+hf(> na3alf6+h2o(g). 2.) if 17.5 kilograms of al2o3(s), 51.4 kilograms of naoh(l), and 51.4 kilograms of hf(g) react completely, how many kilograms of cryolite will be produced? 3.)which reactants will be in excess, (al2o3, naoh, or hf) 4.)what is the total mass of the excess reactants left over after the reaction is complete in kg?