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lutik1710 [3]
3 years ago
12

Name and define the quantity represented by H​

Chemistry
1 answer:
Evgesh-ka [11]3 years ago
4 0

Answer:

Molar enthalpy change, the enthalpy change for one mole of a pure substance

Explanation: i think

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State two methods to increase the rate of the chemical reaction and explain
Jet001 [13]

Answer:

METHOD 1: (surface area of a solid reactant)  METHOD 2: (concentration or pressure of a reactant)

Explanation:

METHOD 1: (surface area of a solid reactant) Increasing the surface area of a solid reactant exposes more of its particles to attack. This results in an increased chance of collisions between reactant particles, so there are more collisions in any given time and the rate of reaction increases.

METHOD 2: (concentration or pressure of a reactant) Increasing the concentration means that we have more particles in the same volume of solution. This increases the chance of collisions between reactant particles, resulting in more collisions in any given time and a faster reaction. As we increase the pressure of reacting gases, we increase the rate of reaction.

3 0
3 years ago
What is the mass in grams of 9.45*10^24 molecules of methanol (CH3OH)?
Angelina_Jolie [31]
Number of moles:

1 mole ---------- 6.02x10²³ molecules
? moles --------- 9.45x10²⁴ molecules

1 x ( 9.45x10²⁴) / 6.02x10²³ =

9.45x10²⁴ / 6.02x10²³ => 15.69 moles of CH3OH

Therefore:

Molar mass CH3OH = 32.04 g/mol

1 mole ------------ 32.04 g
15.69 moles -----  mass methanol

Mass methanol  = 15.69 x 32.04 / 1 => 502.7076 g


6 0
3 years ago
Write the complete chemical equations for production of pentanol from pentene​
ollegr [7]

Answer:

hope this helped :( got this from my friend a long time ago but still not sure if it's really correct this

3 0
2 years ago
Now liters at the same temperature and pressure: liters of H2 + liters of O2 → liters of H2O
iragen [17]
The answer is 2H2 + O2----> 2H2O
5 0
3 years ago
Why carbon dioxide can be tested with the help of moist blue litmus paper ?<br>​
Evgesh-ka [11]

Answer:

carbon dioxide is acidic and when it comes in contact with blue litmus paper it turns red

Explanation:

4 0
3 years ago
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