A sample of sodium chloride (NaCl) has 15.2 moles. How many atoms of sodium chloride are in the sample?

Enter the chemical formula of a binary molecular compound of hydrogen and a Group 6A element that can reasonably be expected to be more acidic in aqueous solution than H2S, e. g. have a larger Ka.

What is the half-life (in seconds) of a zero-order reaction which has an initial reactant concentration of 0.884 M with a k value of 5.42 * 10-2 M/s?

Q = smT S water = 4.184 J/g℃ 1 calorie = 4.184 J How much heat, in joules and in kilojoules, is required to raise the temperature of a 33.0 g sample of Al from 25 to 68 ℃? Specific heat capacity of Al is 0.89 J/g℃.

What is the most important reason to consider ethics when conducting experiments? O A. The scientific results would not be believable if they were obtained unethically. O B. It is important that people are not harmed for the sake of science. O C.

How is the atomic mass of an element calculated? A. by determining the number of electrons in the outer orbital B. by determining the number of protons in the nucleus C.

Scientific knowledge Instruction Active Comparing Science and Pseudoscience Which are examples of science rather than pseudoscience? Check all that apply.

Oxalic acid is a diprotic acid. calculate the percent of oxalic acid (h2c2o4) in a solid given that a 0.7984-g sample of that solid required 37.98 ml of 0.2283 m naoh for neutralization.

Why does ice float after it crystallizes? Its mass is greater than water. Its density is greater than water. Its density is less than water. Air trapped in ice causes it to float.

When acetic anhydride is dissolved in water, it forms acetic acid according to the balanced chemical reaction shown below. calculate the theoretical yield (in grams of acetic acid, fw 60.05 g/mol) if 8.79 ml of acetic anhydride (fw 102.09 g/mol, d.

How do newtons laws relate to egg drop project