Questions in Grade High-school

Questions in Grade High-school

[Free] What holds calcium chloride together? A. Hydrogen bonding B. Metallic bonding C. Ionic bonding D. Dipole forces E. Van der Waals forces (London dispersion forces)

[Free] On a desk, there are 6 sheets of blue paper, 4 sheets of yellow paper, 5 sheets of green paper, and 2 sheets of pink paper. In how many ways can the paper be stacked?

[Free] Which substance does not obey the Lewis octet rule? (a) N₂ (b) NO (c) CF₄ (d) Ar

[Free] What is the ordered pair solution for the following system of equations? \[ x + 2y = 5 \] \[ 3x - y = 1 \]

[Free] A particle is moving along the x-axis so that its position at any time [tex]t \geq 0[/tex] is given by [tex]x(t) = 2te^{-t}[/tex]. A) Find [tex]v(t)[/tex]. B) Find [tex]a(t)[/tex]. C) At [tex]t = 0[/tex], is the particle slowing down or speeding up? Explain. D) At what time(s), if any, does the particle change directions? Justify your answer.

[Free] 71 is 10 less than my number. What is my number?

[Free] If [tex]\log 2^8 = \log 4 + \log x[/tex], what is the value of [tex]x[/tex]?

[Free] What role should the government have in enforcing equal rights for Americans?

[Free] A restaurant has two pastry ovens. When both ovens are used, it takes about 3 hours to bake the bread needed for one day. When only the large oven is used, it takes about 4 hours to bake the bread for one day. Approximately how long would it take to bake the bread for one day if only the small oven were used?

[Free] 7 kg of soybean oil, which costs $4/kg, was combined with 14 kg of canola oil, which costs $1/kg. Find the cost per kg of the mixture.