A mixture of 50.00 grams propane, C3H8, and 100.00 grams oxygen, O₂, is combusted. C3H8 - 44.10 g/mol and the reaction is C3H8 (g) +502(g) → 3CO2(g) + 4H₂O(g). Select words from the dropdown menus to fill in the blanks in the statement below. Oxygen is the limiting reactant and is in excess. 22.42 grams of propane

The first instrument we will use in lab is called a graduated cylinder. A graduated cylinder reads starting from zero at the bottom and goes up as liquid fills it. Keep in mind that you should always estimate one digit further than what is marked on the device to preserve your significant figures. For example, if the device has 1.0 mL increments, the measurement can be estimated to the second decimal place. For the graduated cylinder below, what would be the correct volume reading considering that the markings are in milliliters? Hint: What are the increments of measurement on the graduate cylinder below? -60 -50 -40 -30 -20

14. A student determined the density of air (STP conditions) to be 1.19 grams/Litre. If the theoretical value is 1.29 grams/Litre, determine the student's percentage error.

need help with this chemistry

A runner wants to run 3.9 miles. She knows her running pace is 4.5 km/hr. How many minutes will it take her? USE DIMENSIONAL ANALYSIS

I need help with how many miles there must have been in the sample?

Macmillan Learning Red gold is a gold-copper alloy used to make jewelry. A piece of jewelry made of red gold weighs 8.50 g and has a volume of 0.535 cm. Gold has a density of 19.3 g/cm² and copper has a density of 8.96 g/cm'. Calculate the percentage by mass of each metal in the jewelry. Assume the total volume of the jewelry is the sum of the volumes of the two metals it contains. gold: copper. Pure gold is defined as having 24 carats. When mixed in an alloy, the carats of gold are given as a percentage of this value. For example, a piece of jewelry made with 50% gold has 12 carats. State the purity of this piece of red gold jewelry in carats. purity: carats

Hi! I m working on a lab right now. I have three measurements, 1.057 .9442 .9629 and a mean measurement of .9880. Im supposed to find the deviation and I understand that i just find the difference, but can a deviation be negative?