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Recursos para tareas escolares en Canadá

Consulta las preguntas sobre tareas de estudiantes canadienses. Encuentra respuestas y consejos de estudio que te ayudarán a tener éxito académico.

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Preguntas

Canada
a) Write each fraction as the sum of two fractions with the same denominator.  i) 12 ii) 34 iii) 910 b) Write each fraction in part a as the sum of two fractions with different denominators.
Aritmética Mar 06, 2025
3. Damara and Baldwin had to shovel snow from their driveway. Damara shovelled about 310 of the driveway. Baldwin shovelled about 23 of the driveway. About what fraction of the driveway was cleared of snow?
Aritmética Mar 06, 2025
Quick Refresher This Refresher from 15.5 Acidic and Basic Salts will help you get familiar with prerequisite concepts The pH of a saturated solution of manganese(II) hydroxide in water is 9.84 . Calculate the value for the solubility product constant of manganese(II) hydroxide from this data. 6.0×10−301.6×10−133.3×10−131.4×10−101.2×10−29 Save for Later  Submit Answe St
Química Mar 06, 2025
Which of the following is the strongest acid? HCl HF HBr
Química Mar 06, 2025
Which of the following is the strongest base?
Química Mar 06, 2025
Which of the following is the weakest acid? HF HCl HI HBr
Química Mar 06, 2025
This Refresher from 15.2 The pH Scale will help you get familiar with prerequisite concepts 5.0 mL of 0.10 M solution of NaOH is added to 30 . mL of water. What is the change in the pH of water? 4.45 12.15 7.00 5.15
Química Mar 06, 2025
The equilibrium constant for the autoionization of water at a temperature below the room temperature is 1.2×10−15. What is the pH of water at this temperature? 6.54 7.46 14.00 7.00
Química Mar 06, 2025
A weak acid, HA, has a Ka value of 8.0×10−5. What is the pOH of a 0.64 M salt of this acid, KA? 11.85 2.15 8.95 9.71 5.05 Save for Later
Química Mar 06, 2025
Formic acid has a Ka value of 1.8×10−4. What is the \%-ionization of a 0.10 M solution of formic acid? 0.042% 8.4% 4.2% 2.38% 9.7% Save for Later
Química Mar 06, 2025
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