Can you discribe physical and chemical properties

How many moles are in 67.42 grams Si?

How my orange frogs change because of the red fly

Which sentences describe ponds and lakes? These are water bodies formed from melting glaciers. However, their size can vary from a few square meters to thousands of square kilometers.

Scientific explanations are not always based on empirical evidence True or false?

Sodium is an explosive metal. Chlorine is a poisonous gas. You would expect a compound made of sodium and chlorine to be very dangerous. very explosive and poisonous. very closely related to the element that makes up the majority of the compound.

A student wants to prepare exactly 250 ml of a 0.500 m aqueous potassium hydroxide solution. what mass of potassium hydroxide (molar mass = 56.10 g/mol) must the student dissolve in the 250 ml of solution?

What is the significance of the single covalent bond in a carbon chains 'flexibility'? How is this property involved in the formation of benzene?

What is the frequency of a 670 nm light wave? 4.5 x 106 s-1 2.2 x 106 s-1 2.2 x 1014 s-1 4.5 x 1014 s-1

What daughter product is produced when Thallium-206, an isotope of thallium, undergoes beta minus (B-) decay

Find the Nazca plate and the South American plate. How are they different? Are they moving toward or away from each other?