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rodikova [14]
3 years ago
15

The difference between isotopes for the same element will be found in the atoms'

Chemistry
1 answer:
Simora [160]3 years ago
6 0
C number of neutrons
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How much heat is required to raise the temperature of 225 grams of ice from -26.8 °C to steam at 133 °C ?
lara [203]
<h3>Answer:</h3>

150000 J

<h3>General Formulas and Concepts:</h3>

<u>Chemistry</u>

<u>Thermodynamics</u>

Specific Heat Formula: q = mcΔT

  • <em>q</em> is heat (in J)
  • <em>m</em> is mass (in g)
  • <em>c</em> is specific heat (in J/g °C)
  • ΔT is change in temperature (in °C or K)

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right
<h3>Explanation:</h3>

<u>Step 1: Define</u>

<em>Identify variables</em>

[Given] <em>m</em> = 225 g

[Given] <em>c</em> = 4.184 J/g °C

[Given] ΔT = 133 °C - -26.8 °C = 159.8 °C

[Solve] <em>q</em>

<u>Step 2: Solve for </u><em><u>q</u></em>

  1. Substitute in variables [Specific Heat Formula]:                                          q = (225 g)(4.184 J/g °C)(159.8 °C)
  2. Multiply:                                                                                                           q = (941.4 J/°C)(159.8 °C)
  3. Multiply:                                                                                                           q = 150436 J

<u>Step 3: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

150436 J ≈ 150000 J

Topic: AP Chemistry

Unit: Thermodynamics

Book: Pearson AP Chemistry

5 0
3 years ago
If a 2,000-kilogram car accelerates at a rate of 3 meters per second squared,
Likurg_2 [28]

Answer:

Explanation:

assuming there is no friction

fnet=ma

2,000 kg*3m/s=6,000 N

6 0
2 years ago
OMG PLEASE HELP. WILL MARK U BRAINLIEST IF YOU ANSWER ALL 3 QUESTIONS. THANKS SO MUCH.
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1.) Moe will feel pain and he will see one side go to the right and disappear
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3 years ago
Is the following nuclear equation balanced?<br><br> Yes or No.
Maru [420]

<em>Answer:</em>

  • No

<em>Reason: </em>

  • During a beta decay, one neutron convert into one proton and one electron. The proton remained in nucleus while electron move away known as beta radiation. So atomic mass will be remained same but atomic no will increase by one. So correct ans will be with 218, 86 Po and beta radiation.
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2 years ago
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3 years ago
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