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Grace [21]
3 years ago
9

What is a trial? please​

Chemistry
1 answer:
lesya692 [45]3 years ago
7 0
Examination by a test; experiment, as in chemistry, metallurgy, etc.
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__Mg + __Fe2O3 -> __MgO + __Fe
Anika [276]

Answer:

Your correct answer is A. 1,2,1,2

Explanation:

Please mark brainliest!

7 0
3 years ago
Energy that is associated with the position or composition of an object is called a kinetic energy. b potential energy. c therma
VLD [36.1K]
<h2>The required "option is b) potential energy".</h2>

Explanation:

  • The energy which is associated with the motion of the object is called kinetic energy.
  • The energy which is associated with the amount of heat released is known as thermal energy.
  • The energy which is released during a chemical reaction is known as chemical energy.

          Therefore, option (a), (c), and (d) are incorrect.

  • The energy which is possessed by a stationary object or associated with the position of an object is called as potential energy.
  • Hence, the correct option is potential energy.
4 0
3 years ago
HELP ASAP I WILL GIVE BRAINLYIST
hram777 [196]

Answer:bob

Explanation: owa owa

3 0
3 years ago
Read 2 more answers
Find the pH in which the hydrogen ion H+ concentration 6.38×10'-6 moldm'3
ale4655 [162]
PH = -lg[H+]

pH = -lg[6.38·10-6] = 5.2
7 0
2 years ago
How many ml of a 0.50m solution of hno3 solution are needed to make 500 ml of 0.15m hno3
Anna71 [15]

Answer:

150.0 mL.

Explanation:

  • It is known that the no. of millimoles of HNO₃ before dilution = the no. of millimoles of HNO₃ after dilution.

∵ (MV) before dilution = (MV) after dilution.

<em>∴ V before dilution = (MV) after dilution / M before dilution</em> = (0.15 M)(500.0 mL)/(0.50 M) = <em>150.0 mL.</em>

7 0
3 years ago
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