1. Mary had read that there are alternatives to pesticides for killing aphides that infest roses. She read that some soaps
are good at repelling the pest. She had five rose
plants. She tried four different types of soap on the plants and left one
plant alone. She then recorded the number of aphides remaining on each rose plant.
1. What is the problem?
2. Write a testable hypothesis in the "If... , then..." format. Be
sure it is written in a complete sentence.
3. What would the independent variable be?
What would the dependent variable be?
5. What would the controls be?
Answers: 2
Chemistry, 21.06.2019 23:00
Select the correct answer. given: 2libr + ba β babr2 + 2li in this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced? a. 1.18 mol b. 2.37 mol c. 4.73 mol d. 16.4 mol e. 32.9 mol
Answers: 2
Chemistry, 22.06.2019 03:10
Agas diffuses 1/7 times faster than hydrogen gas (h2). what is the molar mass of the gas? 100.10 g/mol 98.78 g/mol 86.68 g/mol 79.98 g/mol
Answers: 3
Chemistry, 22.06.2019 22:00
Does the number of ions in solution increase, decrease, or remain constant? it continuously decreases. it continuously increases. it decreases at first, then increases. it increases at first, then decreases.
Answers: 3
Chemistry, 22.06.2019 22:40
Percent ionization for a weak acid (ha) is determined by the following formula: percent ionization=[ha] ionized[ha] initialΓ100%for strong acids, ionization is nearly complete (100%) at most concentrations. however, for weak acids, the percent ionization changes significantly with concentration. the more diluted the acid is, the greater percent ionization.a certain weak acid, ha, has a ka value of 9.4Γ10? 7.part acalculate the percent ionization of ha in a 0.10 m solution.part bcalculate the percent ionization of ha in a 0.010 m solution
Answers: 1
1. Mary had read that there are alternatives to pesticides for killing aphides that infest roses. Sh...
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