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lilavasa [31]
3 years ago
10

What is a chemical bond?

Chemistry
2 answers:
hodyreva [135]3 years ago
8 0
A chemical bond is <span> lasting attraction between atoms that enables the formation of </span>chemical <span>compounds. </span>
yarga [219]3 years ago
7 0
A chemical bond<span> is a lasting attraction between </span>atoms<span> that enables the formation of </span>chemical compounds<span>. The bond may result from the </span>electrostatic force<span> of attraction between atoms with opposite charges, or through the sharing of electrons as in the </span><span>covalent bonds</span>
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What is the mass of 7.50 moles of magnesium chloride, mgcl2?
Natali5045456 [20]
MgCl2 = 1Mg + 2Cl = 1(24.3) + 2(35.45) = 95.2g/1mole
7.50moles MgCl2 x 95.2g MgCl2 = 714g MgCl2
8 0
3 years ago
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
Alvin is heating a solution in his chemistry lab. The temperature of the solution is at 14°C. He turns on the burner and finds t
dem82 [27]

Answer:

(3 20) is the answer

Explanation:

3 0
2 years ago
The compound that cannot have a branched structure is select one:
yanalaym [24]
C3H8

There is only one isomer of propane:

H H H
HC-C-CH
H.H H

It’s easier to see I’m a bond line formula; however, You can see that trying to take a methyl group off and move it results in the same structure.
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3 years ago
How many milliliters of 0.150 m h2so4 are required to react with 2.05 g of sodium hydrogen cabronate?
dangina [55]
25 milliters are required
3 0
3 years ago
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