Who's does an atom become a positively charged ion?

A. by gaining one or more electrons

B. by gaining one or more neutrons

C. by losing one or more electrons

D. by losing one or more neutrons

When a bimetallic bar made of copper and iron strips is heated, the bar bends toward the iron strip. the reason for this is?

A student prepared asprin in a lab experiment using the reaction that asprin (C9H8O4) is synthesized by reacting salicylic acid (C7H6O3) with acetic anhydride (C4H6O3). The Student reacted 1.50 g salicylic acid with 2.00 g acetic anhydride.

Hy is it important that a chemical equation be balanced?

How might vertical growth within a city decrease the impact of runoff and increase the opportunity for infiltration of water?

A waxing moon means the moon is becoming a waht

Which of the following requires an oxidizing agent? Al yields Al3+ 2 O yields O2 Cl2 yields 2 Cl- Ag + yields Ag

If a color change occurs when two solutions are mixed has a chemical reaction likely occurred?

Using the following thermochemical data, what is the change in enthalpy for the following reaction? Ca (OH) 2 (aq) + 2HCl (aq) → CaCl2 (aq) + 2H2O (l) CaO (s) + 2HCl (aq) →CaCl2 (aq) + H2O (l), ΔH = - 186kJ CaO (s) + H2O (l) →Ca (OH) 2 (aq), ΔH =

1. Calculate the end velocity of a rocket that traveled 16km in 2 seconds. distance time 2. Calculate the rockets acceleration m with a start velocity of 0m/s and the end velocity from #1 for 10 seconds.

How are linear and nonlinear graphs alike