CHEMISTRY MIDDLE SCHOOL

scientists want to place a telescope on the moon to prove their view of distant planets. The telescope weighs 200 pounds on Earth what will happen to the weigh of the telescope when it reaches thw moon?

Answers

Answer 1
Answer: The weight itself technically will not change. The pull of gravity lessens, making it appear that it is lighter on the moon.

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Which of the following does a simple circuit require?A. an energy source, a resistor, and a capacitor
B. a load, a conductor, and a resistor
C. a load, a resistor, and a capacitor
D. an energy source, a load, and a conductor

Answers

Ln h ch hc kh ñm ln oj

Answer:

I think its a i dont know but ya A

Explanation:

True or False?
A strong acid is safe as long as it's in a dilute solution

Answers

It should be true because a dilute solution is a mixture that has only a little solute dissolved in a certain amount of solvet.So true 
true.(i think) if I'm wrong ask a friend who knows

Choose the correct coefficients to balance the following equation: __Zn + __HCl Imported Asset __ZnCl2 + __H2.1, 2, 2, 2

1, 2, 1, 1

2, 4, 2, 2

0, 2, 0, 0

Answers

Answer:

option b = 1,2,1,1

Explanation:

Chemical equation:

Zn + HCl → ZnCl₂ + H₂

Balanced chemical equation:

Zn + 2HCl → ZnCl₂ + H₂

There are two atoms of hydrogen one atom of zinc and 2 atoms of chlorine on both side of equation.

The common oxidation state of zinc is +2 while tat of chlorine is -1 that's why two chlorine atoms combine with one atom of zinc to accept two electrons.

Zn⁺²Cl₂²⁻ negative and positive charges are equal in magnitude that's why over all compound is neutral.

While two atoms of hydrogen combine with each other through covalent bond by shearing the electrons.

The oxidation state of zinc is increased from 0 to +2 so it gets oxidized while that of chlorine is -1 to -2 is chlorine gets reduced.

Which statement best describes the temperature of the oceans surface water

Answers

The temperature changes in the water and climate up willing all the fish to go away from the surface

Answer:

Areas at high latitudes have the coldest water.

Explanation:

Surface water receives its heat from the sun.

I took the test and it was right 100% :)

What type of reaction does the following equation represent?FeS+2HCl→FeCl2+H2S
A. synthesis reaction
B. double-displacement reaction
C. single-displacement reaction
D. decomposition reaction

Answers

Answer:

B. double-replacement RXN

Explanation:

more specifically, this is a precipitation rxn.
Double-displacement because two elements are getting exchanged by the compounds. It is also a precipitation reaction because there seems to be an insoluble aqueous product.

The equation below shows the products formed when a solution of silver nitrate (AgNO3) reacts with a solution of sodium chloride (NaCl).AgNO3 + NaCl → NaNO3 + AgCl

(Reactants) → (Products)


In this equation, the total mass of the reactants is
A) equal to the mass of AgCl.
B) less than the mass of AgCl.
C) equal to the total mass of the products.
D) greater than the total mass of the products.

Answers

Answer:

C the total mass of the reactants = mass of products

Explanation:

In a chemical reaction atom are not created or destroyed, they are just rearranged

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