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mixas84 [53]
3 years ago
9

MATH. Tom bought 15 party hats priced at 3 for $0.65 and 56 noisemakers priced at 7 for $1.25. What was the total cost of the ha

ts and noisemakers,not including tax?
A. $9.75

B. $8.75

C. $10.70

D. $13.25​
Chemistry
2 answers:
Leni [432]3 years ago
7 0

Answer:

D.13.25

Explanation:

Vladimir79 [104]3 years ago
4 0
The answer is D $13.25









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<span>3) which is an example of a physical change

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Change the following word equation into a formula equation AND balance it. Iron(III) carbonate --&gt; Iron(III) oxide + Carbon d
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How many particles are in a 151 g sample of Li2O?
neonofarm [45]

Answer:

3.052 × 10^24 particles

Explanation:

To get the number of particles (nA) in a substance, we multiply the number of moles of the substance by Avogadro's number (6.02 × 10^23)

The mass of Li2O given in this question is as follows: 151grams.

To convert this mass value to moles, we use;

moles = mass/molar mass

Molar mass of Li2O = 6.9(2) + 16

= 13.8 + 16

= 29.8g/mol

Mole = 151/29.8g

mole = 5.07moles

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= 30.52 × 10^23

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4 0
3 years ago
Liquid<br><br> Describe this state of matter in 3-4 sentences
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Hope this helps :)

4 0
3 years ago
List the following bond types in order of increasing strength: non-polar covalent bonds, ionic bonds, hydrogen bonds, polar cova
ss7ja [257]

Answer: Option (B) is the correct answer.

Explanation:

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In an ionic bond, there occurs attraction between oppositely charged ions due to which there occurs strong forces of attraction between them. Therefore, ionic bonds are the strongest bonds.

  • A polar covalent bond is formed due to unequal sharing of electrons between the combining atoms.

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  • A non-polar covalent bond is formed due to equal sharing of electrons between the combining atoms.

For example, Cl_{2} is a non-polar covalent molecule. No partial charges will be there on the atoms of a non-polar covalent molecule.

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For example, in HCl compound there occurs hydrogen bonding.

In this type of bond, dipole-dipole attractive interactions tend to take place. And, strength of hydrogen bonds is very weak.

Thus, we can conclude that given bond types are arranged in order of increasing strength as follows.

      Hydrogen bonds < non-polar covalent bonds < polar covalent bonds < ionic bonds

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