a piece of metal with a length of 1.42 cm was measured using four different instruments. Which of the following measurements is the most accurate? 1.433 cm, 1.429 cm, 1.415 cm, 1.404 cm

Alarge marble is dropped in a graduated cylinder with 35ml of water in it.the water level increases to 49ml.what is the volume of the marble

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

How many liters of hydrogen gas will be produced at stp from the reaction of 7.179×10^23 atoms of magnesium with 54.219g of phosphoric acid (h3po4) the equation is 3mg + 2h3(> mg(po4)2+3h2