How many liters of nh3 are needed to react completely with 30.0 l of no (at stp) ? 4nh3 (g) + 6no (g) → 5n2 (g) + 6h2o (g) ?

A race car travels 800 kilometers in 2 hours during a race. What was the average speed of the race car in km/hr.

What is the element with the lowest electronegativity value? A. Cesium B. Helium C. Calcium D. Fluorine

A chemical engineer must calculate the maximum safe operating temperature of a high-pressure gas reaction vessel. The vessel is a stainless-steel cylinder that measures wide and high.

You are measuring the concentration of Fe 2 in a sample is determined by measuring the absorbance of its complex with ferroxine. The sample, measured in a 1.00 cm cuvette, has an absorbance of 0.333.

The particles that make up matter do not change during a?

What physical property is changed when a waitress pours coffee from a pot into four mugs? temperature density volume color

Calcule o calor especifico do estanho sabendo que foram necessarias 100 cal para elevar em 20ºC a temperatura de 100 g de estanho

What's the smallest part of a compound

The inertness of the noble gases is due to a. the outermost shell has six electrons. b. the bonds they form with other elements. c. the number of protons and neutrons. d.

Xander is gaining weight. Which best describes what he can do to prevent obesity? exercise every day and also make healthy choices in his diet excercise once a week but make no change in his diet exercise once a week and also make healthy choices in