This topic contains a solution. Click here to go to the answer

Author Question: According to the following thermochemical equation, what mass of HF (in g) must react in order to ... (Read 62 times)

gbarreiro

  • Hero Member
  • *****
  • Posts: 566
According to the following thermochemical equation, what mass of HF (in g) must react in order to produce 345 kJ of energy? Assume excess SiO2.
 
  SiO2(s) + 4 HF(g)  SiF4(g) + 2 H2O(l) Hrxn = -184 kJ
 
  A) 42.7 g
  B) 37.5 g
  C) 150. g
  D) 107 g
  E) 173 g

Question 2

In the production of an ester, the carboxylic acid loses which atom or group of atoms?
 
  A) oxygen from the C=O
  B) H from the OH group
  C) the OH group
  D) the entire COOH group
  E) oxygen from the OH



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

annierak

  • Sr. Member
  • ****
  • Posts: 340
Answer to Question 1

C

Answer to Question 2

C




gbarreiro

  • Member
  • Posts: 566
Reply 2 on: Aug 27, 2018
:D TYSM


T4T

  • Member
  • Posts: 348
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

Did you know?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Did you know?

More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

For a complete list of videos, visit our video library