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# How does cs2 differ from cf4

How does cs2 differ from cf4

# 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?

# An unknown element X can form a compound with the formula XF3. In which group on the periodic table would element X can be found?

1.) Group 1 2.) Group 2 3.) Group 13 4.) Group 14 This question doesn't make any sense to me :/ Can you please explain it?

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...

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...

# 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...

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.

# what is the frequency of an electromagnetic wave that has a wavelength of 72.6

Working on electeomagnetic wavelengths in class. This is so confusing....... My teacher explained it to a point, but im still not understanding. Help me please!!!

# Polyatomic ions

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

# What's the balanced chemical equation for N2 + H2 = NH3 ?

I want to know how to balanced equations

# 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...

I don't manage to solve this problem, can someone help me?  "Calculate how many cm^3 of a solution of sulfuric acid 80.0% (density = 1.727 g/mL) must be diluted with water in order to...

# What are the different types of chemical reactions?

And could i have an example of each, please?

# How many mL of a 0.10 M NaOH solution are needed to neutralize 15 mL of 0.20 M H3PO4?

How many mL of a 0.10 M NaOH solution are needed to neutralize 15 mL of a 0.20 H3PO4?

I need help with these questions:   1. Use the reaction that occurs when magnesium burns in oxygen to show how a reaction might be included in more than one category of reaction.   2...

# How do u convert between the metric system and the english system

Converting 4.92in to mm

# Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 8.30 MJ of energy (in the form of heat)

Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 8.30 MJ of energy (in the form of heat) if the temperature of the sodium is not...