1.To begin, check that this question is shown: The tallest building in the world, the Burj Khalifa in Dubai, is 0.828 kilometers high. What is the building’s height in centimeters? (If this is not the question you see, click Next until it appears.) A. What unit is given in the question?

B. What unit is asked for?

Two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate? a) produce x-rays using colliding electrons and send them to radios, which capture sound b) send messages using infrared radiation, which travel in the form of waves c) send radio waves through intervening media like radio and television d) produce sound waves using microwaves from heated objects

In salt water solution,the salt is the blank

How many moles of oxygen gas are produced from the decomposition of six moles of potassium chlorate