A volume of 115 ml of h2o is initially at room temperature (22.00 ∘

c. a chilled steel rod at 2.00 ∘c is placed in the water. if the final temperature of the system is 21.40 ∘c, what is the mass of the steel bar?

Which statement describes the charge of an electron and the charge of a proton?

Calculate the percent yield if 52.9 g of ethanol reacts to produce 26.7 g of ether. 2CH3CH2OH (l) → CH3CH2OCH2CH3 (l) + H2O (l)

What are some similarities between sublimation and deposition?

A student thinks that the more protons an atom has, the more reactive it will be. Which will best disprove this student's idea? Compare the reactivities of lithium (Li) and krypton (Kr). Note that rubidium has 48 neutrons.

What type of chemical bond stabilizes the 3 dimensional shapes of nucleic acids and proteins?

What is the nearest star in Gemini

In order for a solute to dissolve in a solvent, what must be true?

Radiocarbon dating can be used to determine the age of A a sample less than a million years old B a sample less than 100,000 years old C a sample less than 50,000 years old - D a sample less than five million years old

How many electrons in an atom can have each of the following quantum number or sublevel designations? (a) 4p (b) n = 3, l = 1, m1 = + 1 (c) n = 5, l = 3

Could the two aqueous solutions be identified through a visual inspection? Explain.