1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ololo11 [35]
2 years ago
9

How much heat is required to decompose 25.5 grams of NaHCO3? 2NaHCO3(s) + 129 kJ 2Na2CO3(s) + H2O(

Chemistry
1 answer:
Vaselesa [24]2 years ago
4 0
To determine the heat required in order to decompose a certain amount of a substance, we need information on the heat needed to decompose one mole of the substance. This value are readily available online and other sources. For this reaction, the heat needed is 129 kJ per 2 mol of NaHCO3. We calculate as follows:

129 KJ / 2 mol NaHCO3 (1 mol / 84.01 g ) (25.5 g NaHCO3 ) = 19.58 kJ of heat is needed.
You might be interested in
What is an easy science subject to write an 8 page essay on?
WINSTONCH [101]
Calculating speed or atoms and molecules or planets!




Hope i helped plz mark as brainlist!
8 0
2 years ago
Read 2 more answers
Calculate the delta S rxn at 25 degrees celsius for the reaction 2NH3(g)->>N2H4(g) + H2(g). Do you know where I can find t
Alchen [17]
In order to find your answer you need to be <span>measuring entropy, so you will be using the following formula:
</span><span>delta S= S of (N2H4) + S of ( H2) - [2( S of NH3)]
</span>Hope this is very useful for you
3 0
2 years ago
if a gas is moved from a large container to a small container but its temperature and number of moles remain the same, what woul
Ierofanga [76]
The pressure will increase.
3 0
3 years ago
250 kJ of energy are removed from a 4.00 x 102 g sample of water at 60˚C. Will the sample of water completely freeze?
Stolb23 [73]

250 kJ of energy are removed from a 4.00 x 102 g sample of water at 60˚C. Will the sample of water completely freeze: Yes, because there is enough energy.

<h3>At what temperature would a sample of water freeze?</h3>
  • Note from the Facilitator: At certain temperatures, water changes its condition due to temperature variations. At sea level, fresh water changes from a solid to a liquid at 32°F (0°C). Liquid water freezes at temperatures below 32°F (0°C); this temperature is known as the freezing point of water.
  • The fact that a single water molecule cannot transform into a solid, liquid, or gas is the answer. These names refer to collective behaviors of water molecules rather than to individual molecules.
  • For instance, the solid (ice) has a collection of molecules that are bound together and arranged in a predictable manner. That cannot be accomplished by a single molecule alone

250 kJ of energy are removed from a 4.00 x 102 g sample of water at 60˚C. Will the sample of water completely freeze: Yes, because there is enough energy.

To learn more about water freezing, refer to:

brainly.com/question/15209660

#SPJ9

5 0
1 year ago
If you were given 10.0 mL of 2.0 M H3X, how many milliliters of 2.0 M NaOH would it take to completely neutralize the acid?
Shtirlitz [24]
NaOH + HCl --> NaCl + H2O 

<span>2.0 x Ans = 30.0 x 0.5 </span>

<span>Ans = 7.5 mL</span>
4 0
2 years ago
Other questions:
  • What is the name of Sb(ClO3)5 in chemistry?
    11·1 answer
  • What is the difference between the plasma and gaseous states of matter?
    10·1 answer
  • Is baking soda is dissolved in vinegar and bubbles appear a chemical change?
    11·2 answers
  • What property of water allows it to stick to a dry surface
    11·1 answer
  • If I have 6 moles of a gas at a pressure of 3.4 atm and a volume of 10 liters, what
    8·1 answer
  • If I have 17 liters of gas at 67C and 88.89 atm, what will be the pressure of the gas if I raise the temperature to 94C and decr
    10·1 answer
  • What is the mass of one mole of nitrogen atoms?
    10·2 answers
  • How do flowering plants depend on other living things in order to reproduce?
    8·2 answers
  • If I have an unknown quantity of gas at a
    12·1 answer
  • Which ionic equation describes a redox reaction? A. Ag(+) + Cl- = AgCl B. 2H(+) + CO3(2-) = CO2 + H2O C. H(+) + OH(-) = H2O D. Z
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!