A scientist to study in a sample of an unknown substance do scientist determine's with the substance is a metalloid with four valence electrons. Which two elements could the unknown be

Which formula correctly represents the product of an addition reaction between ethene and chlorine?

What type of isomers are ch3ch2och3 and ch3ch2ch2oh?

A 2.21-kg piece of copper metal is heated from 20.5°C to 126.4°C. Calculate the heat absorbed (in kilojoules) by the metal.

Why did you use two coffee cups during the experiment instead of just one cup? in case a hole was punctured in the inside cup to add more weight in order to stabilize the calorimeter to hold all of the water in the experiment so that the water

Which of the following has the smallest bond dipole? a. C-H b. C-F c. C-Si d. C-C

How is pressure related to buoyant force

How are saturated and supersaturated solutions similar?

Cobalt fluoride crystallizes in a closest packed array of fluoride ions, with the cobalt ions filling one-half of the octahedral holes. What is the formula of this compound?

When you get into a parked car in the summer time, the metal clip is hot and the seat belt fabric is not. What has a higher specific heat, the metal clip or the seat belt fabric? Think about the definition of specific heat.

A laboratory procedure calls for making 600.0mL of a 1.1M KNO3 solution. How much KNO3 in grams is needed?