Questions in Grade High-school

Questions in Grade High-school

[Homework Help] When lithium reacts with bromine to form the compound LiBr, each lithium atom: (1) Gains one electron and becomes a negatively charged ion (2) Gains three electrons and becomes a negatively charged ion (3) Loses one electron and becomes a positively charged ion (4) Loses three electrons and becomes a positively charged ion

[Homework Help] While in Canada, the engineer buys a new electric toothbrush. When she returns home, she designs another transformer so she can use the toothbrush in India. This transformer also has an input coil with 240 turns. How many turns should the output coil have?

[Homework Help] During a rainstorm, when soil becomes saturated, the amount of infiltration: A. decreases and runoff decreases B. decreases and runoff increases C. increases and runoff decreases D. increases and runoff increases

[Homework Help] Water that flows downhill along Earth's surface is called:

[Homework Help] Which condensed structural formula represents an unsaturated compound? A. CH₃CH=CHCH₃ B. CH₃CH₂CH₃ C. CH₃CH₃ D. CH₄

[Homework Help] What is capacitance?

[Homework Help] Which statement regarding biased sampling is false? 1) Online sampling is biased because only the people who happen to visit the website will take the survey. 2) A radio call-in survey is biased because only people who feel strongly about the topic will respond. 3) A survey handed to every third person leaving a library is biased because everyone leaving the library was not asked to participate. 4) Asking for experts to take a survey is biased because they may have particular knowledge of the topic.

[Homework Help] Sediment is deposited as a river enters a lake because the: 1. velocity of the river decreases 2. force of gravity decreases 3. volume of water increases 4. slope of the river increases

[Homework Help] What is the solution of the system of equations below? \[ \begin{align} 2x + 3y &= 7 \\ x + y &= 3 \\ \end{align} \] Options: 1. (1, 2) 2. (2, 1) 3. (4, -1) 4. (4, 1)

[Homework Help] A sample of chlorine gas is at 300 K and 1.00 atmosphere. At which temperature and pressure would the sample behave more like an ideal gas? 1. 0 K and 1.00 atm 2. 150 K and 0.50 atm 3. 273 K and 1.00 atm 4. 600 K and 0.50 atm