MgCO3+HCl->MgCl2+H2CO3

The silicon needles on new blood analyzing devices can painlessly collect samples of blood with volumes of about 100 nanoliters. How many samples of this size would fit in a conventional 5 ml hypodermic needle?

What is the difference between a weak and strong base? Only some of the molecules of a weak base dissociate to produce hydrogen ions when mixed with water, but all of the molecules of a strong base dissociate to produce hydrogen ions.

What do underwater objects appear distorted when you see them from above

Which of the following best describes a way in which the periodic table is organized? A) Elements are organized in alphabetical order. B) Elements are organized with nonmetals on the left and metals on the right.

Daisy's dad has a mass is 70 kg, which is twice Daisy's mass. What is his weight? (Note, be sure to write in the unit. The unit is N)

What human body system can be fossilized? Explain

A reaction mixture initially contains 22.02 g Fe2O3 and 14.66 g CO. Assume that the reaction will progress to 100% completion. What mass (in g) of the excess reactant is leftover?

A cylinder at left with balls evenly spaced throughout the cylinder has an arrow leading to a cylinder at right cylinder with balls in a layer at its bottom. Which change of state is shown in the model?

Which ion was fomed by providing the second ionization to remove an electron A) ca2 + B) N3 - B) Fe3 + C) S2

A reaction was performed in which 3.7 g of benzoic acid was reacted with excess methanol to make 2.1 g of methyl benzoate. Calculate the theoretical yield and percent yield for this reaction.