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kicyunya [14]
3 years ago
10

A combination reaction occurs when one reactant forms two or more products true or false

Chemistry
2 answers:
Charra [1.4K]3 years ago
5 0

Answer:

its true for apex ;)

Explanation:

nata0808 [166]3 years ago
4 0
A combination reaction is a type of reaction which has two reactants that yields one product. For example, the electrolytic synthesis of water would be:

H2 + 1/2O2 ---> H2O

The reactions, hydrogen and oxygen, yield a water molecule. Therefore, the statement above is False. That type of reaction is a decomposition reaction, which is the opposite of combination.
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The reaction nacl(s) → nacl(aq) is performed in a coffee cup calorimeter, using 100 ml of h2o(l) and 5.00g of nacl. if the tempe
MrRissso [65]

Since the density of water is 1 g /mL, hence there is 100 g of H2O. So total mass is:

m = 100 g + 5 g = 105 g

 

=> The heat of reaction can be calculated using the formula:

δhrxn = m C ΔT

where m is mass, C is heap capacity and ΔT is change in temperature = negative since there is a decrease

 

δhrxn = 105 g * 4.18 J/g°C * (-2.30°C)

δhrxn = -1,009.47 J

 

=> However this is still in units of J, so calculate the number of moles of NaCl.

 

moles NaCl = 5 g / (58.44 g / mol)

moles NaCl = 0.0856 mol

 

=> So the heat of reaction per mole is:

δhrxn = -1,009.47 J / 0.0856 mol

δhrxn = -11,798.69 J/mol = -11.8 kJ/mol

5 0
3 years ago
Given 7.40 g of butanoic acid and excess ethanol, how many grams of ethyl butyrate would be synthesized, assuming a complete 100
Dafna11 [192]
On complete conversion (100% yield) 9.75 g of ethyl butyrate will be produced. Below is the solution.....

4 0
3 years ago
Which of these 3 molecules is most polar? And which is the least polar? H2O, H2S, or SO2? Explain.
stepan [7]

Answer:so2

Explanation:

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5. Students hypothesize that temperature is a limiting factor for the germination of seeds. They carry out an experiment to
Lelechka [254]

Answer:

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8 0
2 years ago
The pH of a solution is 2.0. Which statement is correct? Useful formulas include , , , and .
allsm [11]

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if the pH of a solution is 2.0 that means the solution would be acidic.

Explanation:

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