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3 years ago

Which of the following particles are of approximately equal mass? (multiple answers)

Chemistry

2 answers:

balu736 [363]3 years ago

8 0

Neutrons and Protons are equal in mass (≈ 1amu)

Kaylis [27]3 years ago

3 0

Electrons and protons ! they have equal number. the atomic number for a element is based on the protons in the element. They must have equal amount !!

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Aqueous solutions of copper (II) bromide and silver (1) acetate react to form solid

Sladkaya [172]

Answer:

5.63 g

Explanation:

Step 1: Write the balanced equation

CuBr₂(aq) + 2 AgCH₃CO₂(aq) ⇒ 2 AgBr(s) + Cu(CH₃CO₂)₂(aq)

Step 2: Calculate the reacting moles of copper (II) bromide

30.0 mL of 0.499 M CuBr₂ react. The reacting moles of CuBr₂ are:

$0.0300L \times \frac{0.499mol}{L} = 0.0150mol$

Step 3: Calculate the moles formed of silver (I) bromide

The molar ratio of CuBr₂ to AgBr is 1:2. The moles formed of AgBr are 2/1 × 0.0150 mol = 0.0300 mol.

Step 4: Calculate the mass corresponding to 0.0300 mol of AgBr

The molar mass of AgBr is 187.77 g/mol.

$0.0300 mol \times \frac{187.77g}{mol} = 5.63 g$

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4 years ago

Which statement best explains acceleration?

GaryK [48]

The answer is b.

Hope that helps :)

5 0

3 years ago

How many grams of NaOH would be required to make 1.0 L of a 1.5 M solution

omeli [17]

60 grams are required.

Hope this helped you!

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3 years ago

Which element is a metalloid?

kari74 [83]

Hi , the answer is silicon.

3 0

4 years ago

Explain The Law of Conservation of Mass

gayaneshka [121]

Answer:

The Law of Conservation of Mass dates from Antoine Lavoisier's 1789 discovery that mass is neither created nor destroyed in chemical reactions. In other words, the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction.

Hope it's helpful to you

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3 years ago