What coefficients are necessary to balance the equation?

___C3H8 + __O2 ® __ CO2 + H2O

What is the balanced chemical equation for the reaction used to calculate ΔH∘f of SrCO3 (s) ? If fractional coefficients are required, enter them as a fraction (i. e. 1/3).

29) what feature is commonly found at the convergence between two continental plates? A) hot spot volcanoes B) mid-ocean ridge C) ocean trench D) mountains

When the oxidation number of an element decreases over the course of a reaction, that element has beenWhich of the following chemical reactions is an oxidation-reduction reaction?

Noah does a experiment to determine how many people can fit in his room. he finds that two people can fit into the first square foot. his room is 16 square yards. how many dozen people can fit into his room

What is the kinetic energy of the ball as it is half way through the fall?

How many sulfide ions are present in 23.5g of Sb2S3

2. An automobile tire has a pressure of 210 kPa at 293 K. What will be the tire pressure after driving, if the tire temperature rises to 308 K?

Students measuring the mass of a rock record 6.759 g, 6.786 g, 6.812 g, and 6.779 g. Which other measurement of the block's mass would be most precise? A. 6.702 g B. 6.781 g C. 6.605 g D. 6.858 g

What two elements make up dihydrogen monoxide?

What did scientists observe using the earliest microscopes