Potassium, k, has an atomic number of 19 and an atomic mass of 39 how many electrons does a neutral atom of K have?

Pacific Ocean mixture or pure substance?

In which model are atoms are imagined as tiny balls?

Nitrate salts (NO3-), when heated, can produce nitrites (NO2-) plus oxygen (O2). A sample of potassium nitrate is heated, and the O2 gas produced is collected in a 730 mL flask. The pressure of the gas in the flask is 2.

How many grams of a 31.6% potassium sulfate solution would contain 617 g potassium sulfate?

Sodium (Na) A Homogeneous Mixture B Element C Compound D Heterogeneous Mixture

How many milliseconds (ms) are there in 3.5 seconds (s) ?

Which pair of organs, located in the lower back, collects liquid and waste from the blood? A. liver B. lungs C. kidneys D. skin

A caterpillar has an exoskeleton and feeds on many leaves before it makes a cocoon and becomes a butterfly. Which type of organism is a caterpillar? 1. an autotroph and an invertebrate 2. a heterotroph and an invertebrate 3.

Which of the following gases is produced by a storage battery when it's charging?

Ann and Carol each lift the timber with a force of 80 kg/m/s2. If they lift the timber a distance of 1.25 meters, how much work is each woman doing? Question 1 options: 64.00 J 78.75 J 81.25 J 100.00 J