What 2 molecules make up lactose?

What's a crystallisation

What do most psychologists believe to be the cause of development? a. a family's socioeconomic status b. interaction of nature and nurture c. only due to nurture d. only due to nature

Calculate the mass (in g) of 346 cm³ of polythene. The density of polythene is 0.95 g/cm³. Give your answer to 2 decimal places.

Which one goes first A. consumers B. Decomposers C. producers

What are two conditions atoms must have in order to form covalent bonds with one another

What is the mass of 3 L of water vapor at 120◦C and 388 torr?

List three things you would need to consider to determine whether or not a chemical system is at equilibrium?

How many moles of methane gas molecules, CH4, are in 11.2 liters of methane at standard conditions? a. 11.2 moles b. 27.2 moles c. 179.2 moles d. 0.5 moles

The valve between a 2.00-L bulb, in which the gas pressure is 1.80 atm, and a 3.00-L bulb, in which the gas pressure is 3.40 atm, is opened. What is the final pressure in the two bulbs, the temperature remaining constant?

What determines the order of placement of the elements on the modern Periodic Table? 1. atomic number 2. atomic mass 3. the number of neutrons, only 4. the number of neutrons and protons