Alkaline earth metals are very reactive because of how many valence electrons?

Why do X-Ray technicians stand behind a shield when giving X-Rays to patients? a. because large doses of X-Rays cause blindness b. because they can more accurately see the patient's bones c.

what is an example of a hypothesis leading to a new experiment

a cyclist speed changes from 0 miles per second to 15 miles per second in 10 seconds what is the cyclists average acceleration

Gasoline is used to power most of the cars in the United States and worldwide. The average fuel economy for a gasoline powered car is about 32 miles per gallon. The average car in the U. S. Is driven about 15 000 miles (24 000 kilometers) per year.

Consider the following reversible, exothermic chemical reaction: 2C2H2 (g) + 5O2 (g) ↔4CO2 (g) + 2H2O (g) All BUT one of the conditions will cause equilibrium to shift right and produce more of the products.

How much hydrogen gas produced with 50 ml of hcl?

In a modern system of classification, two organisms would be most closely related if they were classified in the same A kingdom C genus 8 phylum 0 species

Consider the following equation: C7H9 + 3 HNO3 → C7H6 (NO2) 3 + 3 H2O Identify the product (s) for this reaction. a. C7H6 (NO2) 3 b. H2O c. HNO3 d. C7H9 and H2O e. C7H6 (NO2) 3 and H2O

How does a branched chain differ from a straight chain?

What is causing force on the inside of a filled balloon that gives the balloon a rigid shape? Select one: O a. Gas particles colliding with the inside walls of the balloon, pressure b. Gas particles slowing down at lower temperatures C.