10 rules to follow in a science lab

Calculate the mass of ethyl alcohol required to prepare 540 grams of C4H6, if the reaction follows the scheme: 2C2H5OH-CH2=C4H6+2H2O+H2

What is the empirical formula of something that is 40% sodium and 60% chlorine

A potassium atom easily loses its one valence electron. what type of bond will it form with a chlorine atom?

Which mixture can be classified as a homogeneous mixture?

During a long drought, many deer become weak because a basic need is not being met. What requirements for life are the deer most likely lacking? enough space enough water adequate shelter ability to find mates

If the human body were a car, glucose would be:

Which part of the circulatory system contains blood rich in carbon dioxide (1) arteries (2) alveoli (3) veins (4) capillaries

Andrea was watching her brother in the ocean and noticed that the waves were coming into the beach at a frequency of 0.571429 Hz. How many waves hit the beach in 28 s? Answer in units of waves.

How many chloride ions are needed to cancel the 2 + charge of magnesium in magnesium chloride?

How many liters of air are in: A) a room that measures 10.0 ft * 11.0 ft and has an 8.00 ft ceiling? B) a room that measures 11.0 ft x 11.0 ft and has a 10.0 ft ceiling? 1 in. = 2.54 cm (exactly); 1 L = 103cm3