53. Which of the following polymer is suitable for packaging

electrical insulator? A. polystyrene B. polyethylene C.

polyamide D. polycarbonate

1. in the 1930s windmills were widely used to generate electricity on most farms in the united states which kind of energy resource is used in windmills? A. recyclable energy B. nonrenewable energy C. renewable energy D. potential energy 2.

What is the temperature of melting ice? A.) 0 °C B.) less than 0 °C C.) more than 0 °C D.) there is no way to know for sure without a thermometer

From the data below element first ionization energy 1 1310 kj/mol 2 1011 kj/mol 3 418 kj/mol 4 2080 kj/mol 5 947 kj/mol which elements are likely to be nonmetals? 1. 3 only 2. 3 and 5 only 3. 1 and 2 only

Carbon dioxide is usually formed when gasoline is burned. If 3.00 L of CO2 is produced at a temperature of 100 °C, what is the temperature of the gas if the volume reduces to 1.00 L?

Ethene is the first member of the a. Alkane series b. Alkyne series c. Saturated hydrocarbons d. Unsaturated hydrocarbons e. Aromatic hydrocarbons

Which group of elements on the periodic table can have more than one possible charge? noble gases alkali metals alkaline earth metals transition metals

Which layer of the earth can only be studied by indirect means

What is the representative particle for barium chloride?

How much thermal energy is needed to raise the temperature of 4g of water from 25°C to 75°C if water has a specific heat of 4.186 J/gºC 1. 850,000J 2. 840,000J 3. 740,000) 4. 840)

The prefix 'kilo-' means a thousand. So a kilo-gram is a thousand grams. 1 kilogram = 1,000 grams. How many kilograms is 831 grams? Round your answer to the nearest tenth of a kilogram.