An energy input of 227 kJ is required to form acetylene from its elements. Convert this energy to units of calories.

The number of valence electrons for calcium are:

Find the equation of the line that passes through the given points (4, 3) and (-4, -4).  Write the equation in slope intercept form.  

Which element has the abbreviated electron configuration [Ne]3 s23p2?

Answers must match the verb in the question. If the question is in present tense, answer in present tense. If the question is in preterite tense, answer in preterite tense.  Pay careful attention to the verb conjugation in your answer. You must include these three parts in every sentence:  Subject + Verb + Complement.  Use the words in parenthesis for the complement.  2 pts. each. 1 pt. for the verb, 1 pt. for the sentence structure. Use (‘) after the vowel that needs an accent. Write (5) answers in the box below.   6. ¿Cuánto dinero cuestan los zapatos? ($100) 7. ¿Quiénes gastan mucho? (María y Luis) 8. ¿Por qué hacemos la tarea? (es importante) 9. ¿Dónde está la Universidad? (Ruskin) 10. ¿Cuándo sacas los libros? (el jueves)

What is the value of -37 mod 7?

Consider the following specific heats of metals. Metal Specific Heat [J/(gºC)] copper 0.377 calcium 0.656 aluminum 0.895 iron 0.448 lead 0.129 If the same amount of heat is added to 50.0 g of each of these metals, all at the same initial temperature, which metal will have the smallest  change in temperature?

Which of the following is the Boolean expression of minterms with the given truth table? x y z output 0 0 0 0 0 0 1 1 0 1 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 1 0 0 1 1 1 1

What is the coefficient of in the expansion of

Solve the system of two nonlinear equations.