Physics, 31.08.2019 16:10 shamim5364

One classic chemistry experiment involves the reaction of hydrochloric acid and magnesium ribbon. a small piece of magnesium ribbon is placed in a test tube and hydrochloric acid is added to cover the magnesium. students observe that the test tube gets hot, a gas (bubbles) is produced, and when a lit match is inserted in the mouth of the test tube, a loud "bark" is heard. this reaction is represented by the equation: mg + 2hcl → mgcl2 + h2 the reaction can be described as both a reaction and a(n) reaction.
a) synthesis; endothermic
b) neutralization; exothermic
c) decomposition; neutralization
d) single replacement; exothermic

Answers: 1

Show answers

Other questions on the subject: Physics

Physics, 22.06.2019 18:30, lilypup004

Asled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slidesa distance d1 down the slope and then covers the distance d2 alongthe horizontal terrain before stopping. find the coefficient ofkinetic friction μk between the sled and the ground, assumingthat it is constant throughout the trip. find the coefficient of kinetic frictionμk. express your answer in terms of someor all of the variables d1, d2, and θ.

Answers: 1

continue

Physics, 23.06.2019 01:30, demarcuswiseman

Imagine that the rightward current flows in the rod for a short time. as a result, what will the net charge on the right and left ends of the rod become? left end negative and right end positive left end negative and right end negative left end negative and right end nearly neutral left end nearly neutral and right end positive both ends nearly neutral

Answers: 3

continue

Physics, 23.06.2019 03:00, fordkenae

If you visited mount shasta city (elevation 900 m [3000 ft.]) and found the outside air temperature to be 27°c (81°f), what would be the air temperature at the summit of mount shasta (elevation 4200 m [14,000 ft.]) at that moment-assuming that the temperature conditions with altitude change at an average, or normal, lapse rate?

Answers: 3

continue

Physics, 23.06.2019 13:30, hilton894

Astudent is concluding an expirinent to determine how far a ball will roll down a ramp based on the angel of incline. what are three possible controls for this expiriment

Answers: 1

continue

You know the right answer?

One classic chemistry experiment involves the reaction of hydrochloric acid and magnesium ribbon. a...