Why must a chemistry experiments performed in a well ventilated room?

write at least two examples of objects or things for every property 1. malleability 2. hardness 3. conductivity 4. flexibility

How do people use bromine?

Which of the following is an example of a heterogeneous mixture? A. table salt B. iced tea C. clear hot tea D. clear salt water

What is the structural formula for CH3CH2CI

When are mesurements accurate and precise

How many moles are in 23.4 g

A chemist prepares hydrogen fluoride by means of the following reaction: CaF2 + H2SO4 - -> CaSO4 + 2HF The chemist uses 11 g of CaF2 and an excess of H2SO4, and the reaction produces 2.2 g of HF. (a) Calculate the theoretical yield of HF.

Gaps in rock layers that develop when agents of erosion remove existing rock layers

Why are atoms always neutral

Question: Ron is a healthcare worker who needs to lift a heavy patient. Which kind of safety issue does this scenario relate to? A infection B. ergonomics C. human resources D. orientation