The best way to balance an equation is to balance one atom at a time. You start with two Au atoms on the left, so you know the coefficient of Au on the right has to be 2. So at first we get, Au2S3 + H2 --> 2Au + H2S Then, notice you have 3 sulfur atoms on the left, so you need three on the right. Our equation becomes Au2S3 + H2 --> 2Au + 3H2S Lastly, we now have six hydrogen atoms on the right, and only two on the left, so we assign a three to the H2 on the left Au2S3 + 3H2 --> 2Au + 3H2S Is the balanced final equation.
I believe the closest possible answer to this question are:Gas A effuses faster than gas B.The molar mass is directly proportional to the rate of effusion.Thank you for your question. Please don't hesitate to ask in Brainly your queries
