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频道帖子
| 2 | 没有文字... | 174 |
| 3 | 没有文字... | 128 |
| 4 | AdmissionALERT.pdf | 123 |
| 5 | 📝📝📝📝🔔🔔🔔🔔🔔
WASSCE RESULTS ARE OUT!!!!!
BUY YOUR CHECKER NOW!!!!
WhatsApp 0207626609
NB: it can be checked and sent to you in PDF FORM.
Cost:
Voucher: Ghc 22
Both voucher and PDF Ghc 24
all the best and congratulations | 147 |
| 6 | 📝📝📝📝🔔🔔🔔🔔🔔
WASSCE RESULTS ARE OUT!!!!!
....................................................... | 127 |
| 7 | ‼️Press release from WAEC …. Ministry of Education has paid some of the money…… by end of this month results will be released | 159 |
| 8 | Wassce results to be released by 29th Dec. | 175 |
| 9 | High Schools in Ghana to close on Thursday, December 5th to enable teachers and qualified students to make arrangements to go and exercise their franchise on December 7 | 222 |
| 10 | 没有文字... | 215 |
| 11 | 没有文字... | 202 |
| 12 | Checkers available. WhatsApp 0207626609.. | 100 |
| 13 | BECE 2024 SCHOOL UPDATE
•BECE Results Release Date: 14th October, 2024)
•School Reopening: October 28th, 2024
•Reporting Date for BECE 2024 candidates is 21st November, 2024
.......................................................... | 150 |
| 14 | A wassce group channel for sale interested person WhatsApp 0207626609... | 67 |
| 15 | Congratulations everyone 🎉 let's hope for the best 👌 👍...... | 232 |
| 16 | All
Pens down !🎉🍾..... | 229 |
| 17 | 没有文字... | 239 |
| 18 | 没有文字... | 203 |
| 19 | 没有文字... | 179 |
| 20 | *Q7 solution*
a) In an equilibrium reaction , some reactants remain unconverted and this leads to lower yields of desired products.
b) It can cause damage to equipment and increase cost of maintenance.
Ca(HCO₃)₂ can decompose upon heating to form calcium carbonate (CaCO₃) which forms scales and block pipes and equipment. This scale buildup reduces efficiency and causes damage to equipment.
c) I ) Constant pressure
ii) crushing limestone increases the surface area and exposes more molecules. There is an increase in the number of effective collisions between the reacting molecules and hence there is an increase in the rate of decomposition
iii) Equilibrium position of a reversible reactions refers to the relative concentration of reactants and products in a reversible reaction when the forward and backward reactions occur at the same rate.
iv) The enthalpy change for the forward reaction is equal in magnitude but opposite in sign to the enthalpy change in the backward reaction. That is , if the foward reaction is exothermic , the backward reaction is endothermic
e i) Allotropy refers to the existence of an element in two or more different forms in the same physical state, with each form having distinct physical and chemical properties
ii) 1. Diamond
2. Graphite | 124 |
