What are the rules of counting significant numbers?

Alejandra measures the mass of a cup of baking soda three times. Her measurements all exactly reflect the actual mass of the baking soda. If each measurement in a set of data has a high level of accuracy, this indicates

Balanced equation representing decomposition of lead (iv) oxide

When 1 mole of tin IV oxide is heated with 2 moles of hydrogen gas, 1 mole of tin metal and 2 moles of water vapor are generated. SnO2 + 2H2 → Sn + 2H2O How many moles of tin metal will be produced when 0.74 moles of tin IV oxide is heated?

For which of the following conversions does the value of the conversion factor depend upon the formula of the substance?

What does the fiberfill represent in the modol

An ion has a charge of 2 - and 18 electrons. A) From which atom does this ion form? B) How do you know?

What diseases are spread in warm temperatures?

In 1993 the Minnesota Department of Health set a health risk limit for chloroform in groundwater of 60.0 g/L Suppose an analytical chemist receives a sample of groundwater with a measured volume of 79.0 mL.

A good way for someone to identify similar substances is to measure their densities true or false

At 25 ∘c, kp = 25 for the reaction h2 (g) + i2 (g) ⇌2hi (g). at equilibrium, the partial pressure of both h2 and i2 is 0.296 atm. what is the partial pressure of hi at equilibrium?