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3 years ago

Kyle is swinging at the playground. As he moves from the top of the swing to the bottom he will _____.

Chemistry

2 answers:

juin [17]3 years ago

4 0

Answer:

b. gain potential energy and lose kinetic energy

Explanation:

I could be wrong but heres a definition of each word. Potential energy is the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors. Kinetic energy is energy which a body possesses by virtue of being in motion.

Vanyuwa [196]3 years ago

3 0

Explanation:

dont trust me but i think its A

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Listed in the Item Bank are some key terms and expressions associated with the categories seen in the Venn Diagram. To find out

gulaghasi [49]

Answer: In the possible source of error goes: Changing two variables at once to increase rate of data collection, Taking turns with lab partners performing different tasks in an experiment, Measuring millimeters with an ordinary meter stick

In the good experimental practice goes: Measuring in standard metric units, Doing repetitive trials of the same experiment, changing the angle of a ramp in an experiment by constant intervals

Explanation: hopefully this helps i got them right so it guaaranteed you will get this right aswell.

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4 years ago

What are two things that you observed when you heated the mixture of tin and nitric acid over the Bunsen burner in the virtual l

Simora [160]

Sn + 4 HNO₃ → SnO₂ + 4 NO₂ + 2 H₂O

Heating was required to get rid of the H₂O. When all moisture is gone, you weigh the sample. After which, you further heat it to get ride of the oxygen. By doing this, you would know the individual mass of each element. Then, you can solve for the empirical formula of the oxide of tin.

Hope this helps best of luck :)

7 0

3 years ago

Use your data to form hypothesis relating the amount of light to the rate of photosynthesis.

natka813 [3]

Answer:

its b i just dod it hop it helps

3 0

3 years ago

Read 2 more answers

A mixture of BaCl2 and NaCl is analyzed by precipitating all the barium as BaSO4. After addition of an excess of Na2SO4 to a 3.9

rjkz [21]

Answer:

The mass % of BaCl2 is 47.24 %

Explanation:

Step 1: Data given

Molar mass BaSO4 = 233.38 g/mol

Molar mass BaCl2 = 208.23 g/mol

Step 2: The balanced equation

BaCl2(aq) + Na2SO4(aq) → BaSO4(s) + 2NaCl(aq)

Step 3: Calculate moles BaSO4

Moles BaSO4 = mass BaSO4 / molar mass BaSO4

Moles BaSO4 = 2.113 grams / 233.38 g/mol

Moles BaSO4 = 0.00905 moles

Step 4: Calculate moles BaCl2

For 1 mol BaCl2 we need 1 mol Na2SO4 to produce 1 mol BaSO4 and 2 moles NaCl

For 0.00905 moles BaSO4 we need 0.00905 moles BaCl2

Step 5: Calculate mass BaCl2

Mass BaCl2 = moles BaCl2 * molar mass BaCl2

Mass BaCl2 = 0.00905 moles *208.23 g/mol

Mass BaCl2 = 1.884 grams

Step 6: Calculate % BaCl2

% BaCl2 = (1.884 / 3.988 ) * 100%

% BaCl2 = 47.24 %

The mass % of BaCl2 is 47.24 %

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3 years ago

N an experiment, Theresa measured 15.00 mL of water. She must have used a

Serjik [45]

She must have used a beaker.

Because it goes over 1,500 mL

I hope this helps :)

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3 years ago