Question 27 0/2 pts Predict what would happen if a strip of strontium were dropped into...
Predict what would happen if a strip of strontium were dropped into a solution of BaSO4.
Question 5 0/ 1 pts If the magnesium strip weighed 0.592 g, what would the theoretical yield (in grams) of H2 gas be? Report your answer with 4 digits behind the decimal point.
Question 5 2 pts Consider what would happen if aqueous solutions of strontium chloride and lithium phosphate were combined. Match each of the items below to the correct description of that item in this chemical process. Item 1: 3 Sr2+ (aq) + 2 PO43- (aq) --> Sr3(PO4)2 (s) Item 2: Lit and Cl" Item 3: 3 Sr2+ (aq) + 6 CI" (aq) + 6 LI+ (aq) + 2 PO43- (aq) --> Sr3(PO4)2 (s) +6 Lit (aq) + 6 Cl(aq) Item...
Question 2 5 pts What would happen to the your K values if you used an absorptivity constant of 6000 M, when the actual value was 5000 M ?? Explain your answer? HTML Editor BIYAAI EI 3 1 x x, E - O VOG DT 12pt Pi
Predict what would happen to the secondary structure of a protein if an alcohol that disrupts hydrogen bonding were added. Choose one or more answer (if applied): A. Nothing would happen to the protein; hydrogen bonding is not important for secondary structure B. The beta sheets would unfold, disrupting protein structure C. The a helixes would unfold, disrupting protein structure D. Individual amino acids would be hydrolyzed from the protein, disrupting protein structure
7 pts Question 12 If there were no air resistance, a penny dropped from the top of a skyscraper would reach the ground 9.8 s later. To the nearest integer, what would the penny's speed in m/s be right as it reaches the ground if it was dropped from rest?
This Question: 1 pt 1 of 27 (0 complete) This Test: 27 pts po Nc Solve the equation on the interval Oso<21. its cos (38) = -1 What are the solutions to cos (30) = -1 in the interval 050< 2x? Select the correct choice and fill in any answer boxes in your choice below. O A. The solution set is (Simply your answer. Type an exact answer, using R as needed. Use integers or fractions for any numbers in...
9 and 27 plz Question 8 1 pts A ball is dropped from a roof of a building and strikes the ground in 3 seconds. If a second ball is thrown horizontally from the roof, it will hit the ground in: O 35 O more than 35 O less than 3s Impossible to tell without knowing the initial velocity of the second ball Question 9 1 pts If the ball in the problem above has initial velocity of 29.4 m/s,...
D Question 3 2 pts Would the value of 'g'change if the picket fence is dropped with an initial downward velocity (ignoring air resistance)? No Yes Depends on the speed No answer text provided. D Question 4 2 pts Would the measured value of velocity be different if the picket fence is tilted instead of being vertical? . Yes, it would show a smaller speed than actual Yes, it would show a larger speed than actual No, the measured speed...
Pre-lab Questions Predict what would happen if each set of solutions were mixed. In each case, write a balanced equation for any reaction that would occur. Describe what you would observe if you carried out the reaction in the laboratory. If nothing would happen, simply write "no reaction." (a) BaC12 (aq)+H2SO4 (aq) (bDAgNOs (aq) + Na2S04 (aą) (c) FeCls (aq) + Na2COs (aq) (d) KOH (aq) HCI (aq) (e) Ag O (s) + HNOs (aq) () BaCOs (s) + HCI...