CHEMISTRY MIDDLE SCHOOL

Combine the words volume and meniscus in one sentence.PLEASE HELP... need within 20 min.

THANKS!!!

Answers

Answer 1
Answer: To measure volume, measure the lowest part of the meniscus

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The reaction between zinc and hydrogen chloride produces zinc chloride, hydrogen gas, and heat. If more heat is removed from the reaction, how does the rate of reaction change to counter the action?

Answers

Answer:

The rate of reaction increases to counter the action of removing heat.

Explanation:

  • The reaction between zinc and hydrogen chloride produces zinc chloride, hydrogen gas, and heat.
  • The reaction is exothermic reaction. Heat is produced in the reaction.
  • It means the temperature of system increase when reaction proceeds. When heat is removed from system, it stimulates the reaction to fast to produce more heat.
  • Due to fast reaction rate of reaction increases.

Line.30. The line perpendicular to point where a ray of light reflects is called the
a. angle of reflection
b. angle of incidence
c. normal
d. law of reflection

Answers

Answer:

c) Normal

Explanation:

Reflection is a phenomenon typical of light wave; it occurs when a ray of light hits the interface between two mediums, and bounces off back into the original medium, at a certain angle.

The direction of the reflected ray is determined by the law of reflection, which states that:

1) The incident ray and the reflected ray, together with the normal to the interface (the perpendicular to the interface), all lie within the same plane

2) The angle of incidence is equal to the angle of reflection:

\theta_i=\theta_r

where

\theta_i is measured as the angle between the incident ray and the normal to the interface

\theta_r is measured as the angle between the reflected ray and the normal to the interface

A bacterium is in a nasty environment. What sort of reproduction would it use in this situation? Why? How else would it protect itself? (hint: what were those special capsules called and why were they special?)

Answers

The bacteria in nasty environment undergoes multiple fission.

Explanation:

The bacteria is a unicellular prokaryotic organisms that are found in each and every places of the world. They can survive in extremes of temperatures and pH. They can save themselves through special processes in the extreme climates.

The bacteria undergoes multiple fission in these climates. They cover themselves up with a strong and tough capsule inside which they undergo several Binary fissions. This leads to the formation of multiple cells enclosed with a capsule.

With the return of the favourable climate, the capsule rupture and these newly formed cells come out.

a ball is rolling across the floor.How could you apply an unbalanced force to change the speed or direction of the ball?

Answers

Usually a ball would roll toward the side that's lower, so if you had a ramp and put it on the side that was lower, then the ball would change direction and go the opposite direction
Kick the ball! The force of the kick likely isn't the same amount of force acting on the ball as it's rolling, so as long as the kick makes the ball go faster (or slower) than it had been, that force is unbalanced

A bobsled has a momentum of 4000 0 kg* m/s to the south. Friction on the track reduces its momentum to 500 kg* m/s to the south. What impulse is applied to the bobsled by the friction? A. 6500 kg* m/s north

OB. 1500 kg* m/s south O

C. 6500 kg* m/s south

O 1500 kg* m/s north

Answers

Answer: 1500 kg•m/s north

Explanation:

A PE X
The correct answer is c

There is a toxic poison gas in the air made of chlorine, argon, and rheniumWho made the poison gas
A. Clarre
B.Nathan
C. Felex

Answers

Nathan made the toxic poison gas
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