What are the rules of counting significant numbers?

30. how many grams of boric acid, b (oh) 3 (fm 61.83), should be used to make 2.00 l of 0.050 0 m solution? what kind of fl ask is used to prepare this solution?

What is the ph of a solution that results from mixing 25 ml of 0.15 M hcl to 25 ml of 0.52 m nh3?

According to naming conventions, which class of organic compounds does methanal belong to? alcohols aldehydes carboxylic acids ketones

f the pressure on a 1.00 L sample of gas is increased from 760. mmHg to 2.00 atm at constant temperature, what will the volume of the gas sample become?

Crash Course History of Science Episode #22: Darwin and Natural Selection 1. In Natural Theology what were the 4 aspects of creation?

A scientist studies the DNA of three different species. The DNA from species A is more similar to DNA from species B than DNA from species C. Which species are probably the most closely related? Explain your answer.

Gamma rays are waves of energy that have no charge. true false

Describe what a polar covalent bond is and name a common compound that has a polar covalent bond holding it together

Part a:we can determine the purity of solid materials by using calorimetry. a gold ring (for pure gold, specific heat = 0.1291 j⋅g-1⋅k-1) with mass of 10.5 g is heated to 78.3 ∘c and immersed in 50 g of 23.

How has desertification impacted the environment in Latin America?