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# How many grams of Mg(OH)2 will be needed to neutralize 25 mL of stomach acid if stomach acid is 0.10 M HCl?

How many grams of Mg(OH)2 will be needed to neutralize 25 mL if stomach acid if stomach acid is 0.10 HCl?

# what is ions?

what is ions? explain!

The reversible chemical reaction: A+B<->C+D has the following equilibrium constant: Kc=[C][D]/[A][B]=4.1.   (a) Initially, only A and B are present, each at 2.00 M. What...

# Grams-moles

How would I convert grams into moles, and vice versa? Please make is as simple as possible! Thanks!

# how many moles of phosphorus are in a mixture containing 4.0x10^23molecules of PCL3

how many moles of phosphorus are in a mixture containing 4.0x1023 molecules of PCL3?

# May I have some help with this chemistry problem?

If I takes 4.67 times as long for a particular gas to effuse as it takes hydrogen under the same conditions, what is the molecular mass of the gas? (Note that the rate of effusion is inversely proportional...

Part A. Phosgene (carbonyl chloride), COCl2, is an extremely toxic gas that is used in manufacturing certain dyes and plastics. Phosgene can be produced by reacting carbon monoxide and chlorine gas...

For the reaction: CO(g)+NH3(g)<->HCONH2(g) The equilibrium constant is: K=0.207 at 400 K. If a reaction vessel is filled with initial concentrations 2.15M of CO and 2...

# May I have some help with this particular problem?

At what temperature would CO2 molecules have an rms speed equal to that of H2 molecules at 25 degrees C?

# You have 95 mL of a solution that has a lead(ll) concentration of 0.0012 M. Will PbCl2 precipitate when 1.20 grams of solid NaCl is added?

This is a solubility problem and I am a little confused on how to set it up.

# Polyatomic ions

Since polyatomic ions naturally have subscripts with them, then do we ignore them when trying to balance a chemical equation?

# How many feet make a meter

I need to know how many feet are in a meter.

# mgo+co2=mgco3 what is the coefficents thanks

trying to balance unbalanced chemical reaction

Can anyone help me with this problem? I can't get the answer, there must be something wrong in my reasoning, thank you so much!   "Calculate the pH of a solution obtained by adding...

# How does cs2 differ from cf4

How does cs2 differ from cf4

# How do I balance formulas?

Ca(OH)2+H3PO4->Ca3(PO4)2+HOH This one's a bit difficult to figure out. Thanks!

# Iron (3) Oxide + Aluminum = Iron + Aluminum Oxide answer

Pb(s)+2 HCl(aq)→PbCl2(s)+H2(g)

# How to solve this?

Calculate the density of Helium, He, in grams per liter at 21 degrees C and 752 mmHg. The density of air under these conditions is 1.188 g/L. What is the difference in mass between 1 liter of air...

# May I have help solving this?

A vessel containing 39.5 cm3 of helium gas at 25 degrees C and 106kPa was inverted and placed in cold ethanol. As the gas contracted, ethanol was forced into the vessel to maintain the same pressure...

# What are the different types of chemical reactions?

And could i have an example of each, please?