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3 years ago

What is required in order to determine wether or not an object moves

Chemistry

1 answer:

Stels [109]3 years ago

7 0

Answer:

The answer would be Point of Reference.

In order to determine, whether an object has moved or not, a point of reference is required. The reference point is required to the measure the movement of the object, without a reference point the distance or displacement cannot be obtained. Hence, a reference point is very required to determine, whether the object has moved or not.

(Hope this helps) Sky

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Hi there, giving brainliest to best answer. no spammers

Juli2301 [7.4K]

Answer:

D. Earth's northern hemisphere is tilted toward the Sun

Explanation:

You can see in the picture above that the northern hemisphere is past the perpendicular to orbit line to the right.

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Imagine yourself taking a position at a racecourse, ready to run as soon as you hear the gunshot. Which energy conversion occurs

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Potential(stored energy) to kinetic(moving energy)

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How many moles of a solute is present in 4.00L of an 8.30M solution

Sladkaya [172]

Answer:

The number of moles of solute present in 4.00 L of an 8.30 M solution is 33.2

Explanation:

The Molarity (M) or Molar Concentration is the number of moles of solute per liter of solution; in other words it is the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of the solute by the volume of the solution:

$Molarity=\frac{number of moles of solute}{volume}$

Molarity is expressed in units ( $\frac{moles}{liter}$ ) or M.

In this case:

molarity= 8.30 M
number of moles of solute= ?
volume= 4.00 L

Replacing:

$8.30 M=\frac{number of moles of solute}{4 L}$

Solving:

number of moles of solute= 8.30 M* 4 L= 8.30 $\frac{moles}{liter}$ * 4 L

number of moles of solute =33.2

<u><em>The number of moles of solute present in 4.00 L of an 8.30 M solution is 33.2</em></u>

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3 years ago

How do you balance redox equations in acidic solutions?

Anuta_ua [19.1K]

Answer:

First, balance the half-reactions

Second, equalize the electrons

Third,add two reaction equations to get final answer

Explanation:

For example

H₂C₂0₄ + MnO⁻₄ ---------->CO₂+Mn²⁺

(i) Balancing the half reactions

H₂C₂O₄-------->2CO₂+2H⁺+2e⁻

5e⁻ +8H⁺+MnO₄⁻----------->Mn²⁺+4H₂O

(ii)

Equalizing the electrons

5H₂C₂O₄--------->10CO₂+10H⁺+10e⁻ ---here there is a factor of 5

10e⁻+16H⁺+2MnO₄⁻--------->2Mn²⁺+8H₂O -----here there is a factor of 2

(iii)

Add the two where electrons and some Hydrogen ions will cancel out

5H₂C₂O₄+6H⁺+2MnO₄⁻---->10CO₂+2Mn²⁺+8H₂O

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3 years ago

What do alkali metals react bad with

solmaris [256]

Explanation:

what do you mean by "bad"

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