Iron (fe) has 26 protons and 30 neutrons which of the following is most likely atomic weight of iron

A) 26.84

B) 30.84

C) 55.84

Which of these actions is an example of chemical weathering? A. Freezing water widens the cracks in rocks. B. Plant roots force their way into cracks in rocks and break them. C.

QUIZ Instructions D Question 2 An increase in temperature will increase the rate of a reaction True False

A molecule that shares valence electrons and contains nonmetallic atom is called a

What are the four functions of the endocrine system?

Calculate the volume of dry CO2 produced at body temperature (37 ∘ c. and 0.980 atm when 25.5 g of glucose is consumed in this reaction.

A criminalist uses a fluorescent chemical called rhodamine, cyanoacrylate fumes, and a uv light source to see a fingerprint on a gun. Which type of evidence is he detecting? Gross evidence latent evidence direct evidence trace evidence

Which of the following energy changes occurs as a ball bounces

Given the reaction 4NH3 + 5O2 4NO+6H2O, what is the total number of moles of O2 required to produce 40 mol of NO? (1) 5 mol (2) 9 mol (3) 32 mol (4) 50 mol

The liter is defined as a. 1000m3 b. 1000cm3 c. 1000g3 d. 1000c3

How many atoms are in 8.1 moles of oxygen? And how do you know?