A 500.0-g piece of iron is heated in a flame and dropped into 400.0 g of water at 10.0 °C. The temperature of the water rises to 90.0 °C. How hot was the iron when it was first removed from the flame?

Select the correct answer. which statement is true about a polarized object? o a. it gains electrons and becomes negatively charged. ob. it gains protons and becomes positively charged. oc. the number of positive and negative charges can be the same. od. it has to be a metal. o e. there is no change in the distribution of the charge in the object. reset next what

What are the genotypic and phenotypic ratios

If you have 5.25 grams of methane (ch4), how many grams of co2 will you produce ?