Which of these formulas represents 1 atom of sodium (Na) chemically combined with another element?

A. PbS

B. NaCl

C. 2NaOH

D. Na2H3IO6

Can we change the weight of any object. If we they explain it ... ?

A car traveling at 26 m/s starts to decelerate steadily. It comes to a complete stop in 5 seconds. What is its acceleration?

Which would you most likely be able to separate into parts by filtering A. Heterogeneous mixture of two liquids B. Heterogeneous mixture of two solids C. Homogeneous mixture of two liquids D. Homogeneous mixture of two solids

U are asked to measure the amount of liquid held in a sports drink bottle. which is an appropriate unit of measurement? is grams, mililiters, milligrams or centimeter

A bookshelf is 2m long, with supports at its end (p and q). A book weighing 10N is placed in the middle of the shelf. what are the upward forces acting on p and q. if the book is moved 50 cm from q, what are the forces at p and q now?

What is the hottest layer in the Sun's atmosphere?

Which do you need to calculate the speed of a wave? A. distance and frequency B. distance and time C. time and frequency

What is one of the benefits that scientists have discovered from organisms' daily exposure to radioisotopes? 1. being able to Carbon date fossils 2. X-ray Imaging capability 3. radiation treatment for cancer 4. invention of microwave cooking

Despite valid research, in the late 1900s, women and minorities were thought to have a higher level of intelligence than white males

Radio communications were severely Distributed last week And the local newspaper says that solar activity is to blame. Which type of solar activity could the newspaper be talking about?