How does a catalyst influence a chemical reaction? It speeds up or slows down a chemical reaction by direct participation. It reacts with products to increase the concentration of reactants. It provides an alternative energy pathway for the reaction to proceed. It increases the total amount of products formed.

Of four agents alpha, beta, gamma anddelta, three have to be sent together on amission. if alpha and beta cannot gotogether, beta and gamma cannot go togetherand gamma and delta cannot go together,then which of the following holds? 1. any three agents can be sent.2. alpha, delta and any one out of beta andv gamma can be sent.3. beta, gamma and any one out of alphaand delta can be sent.4. the mission is impossible.

Find the area of shaded region z=-0.89

Which of the following attitudes is not likely to lead to unsafe decisions? a. anxiety b. composure c. overconfidence