A substance has an empirical formula of CH2 and a molar mass of 56 grams per mole. The molecular formula for this compound is

(1) CH2 (3) C4H8

(2) C4H6 (4) C8H4

Based on the above reaction what energy change occurs when 1.2 moles of methane (ch4) reacts

Which of the following statements correctly describes the relationship between pressure (P) and volume (V) illustrated in the following plot for a gas at constant temperature?

What trend in atomic radius do u see as you go a group family on the periodic table?

Which of the following requires an oxidizing agent? Al yields Al3+ 2 O yields O2 Cl2 yields 2 Cl- Ag + yields Ag

What is the difference between the independent variable and the control?

Which statement is true for a pure compound but NOT true for a pure element?

Which one is uncelluar and which is multicelluar? crab or pond organism

An atom of lithium loses an electron. What is the effect of this event? Group of answer choices The atom of a different element is formed. The atom of lithium acquires no charge. The atom of lithium becomes a positively charged ion.

Water interacts with polar substances like - OH groups but not with non-polar substances like methyl (-CH3) or ethyl groups (-CH2). Using this information, select the molecules that will easily dissolve in water based on polarity not on size.

Which of the following statements is not considered weather? The wind is blowing 20 miles per hour right now in Kansas. It is raining in Seattle. It is usually humid in Florida. It is snowing in Colorado.