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Kazeer [188]
3 years ago
11

Explain the relationship between the roman numeral and the charge used in naming ionic compounds.

Chemistry
1 answer:
Tasya [4]3 years ago
3 0
The Roman numerals are used to show the oxidation number of some transition metals because some elements have more than one possible oxidation state. So basically it's there to indicate the charge of the element.
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5 points ) Which of the following is a benefit of using email to communicate at work ? a) You can express yourself in a limited
Aloiza [94]

Answer:

C

Explanation:

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2 years ago
If 62.0 grams of magnesium metal (Mg) react with 55.5 grams of oxygen gas (O2) in a synthesis reaction, how many grams of the ex
Alina [70]
The balanced chemical equation would be as follows:
<span>
Mg + O2 → MgO2

</span>We are given the amounts of the reactants. We need to determine first which one is the limiting reactant. We do as follows:

62.0 g Mg (1 mol / <span>24.31 g ) = 2.55 mol Mg 
</span>55.5 g O2 ( 1 mol / 32 g ) = 1.74 mol O2   -----> <span>consumed completely and therefore the limiting reactant

2.55 mol - 1.74 mol O2( 1 mol Mg / 1 mol O2 ) = 0.81 mol Mg excess</span>
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3 years ago
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How many grams of aluminum sulfide would form if 2.25 liters of a 1.50 molar aluminum chloride solution reacts with 2.00 liters
Alex787 [66]
Hope this helps you!

8 0
3 years ago
pls balance the following chemical equation asap; Ca(OH)2 +CO2 = CaCO3+ H2O​ pls make it step by step
Mrac [35]

Answer:

Explanation:

Start by writing water as HOH

Ca(OH)2 +CO2 = CaCO3+ HOH

Next pay attention to the CO2 going to CO3

We need an oxygen.

Fortunately that is provided by the (OH)2

Now we have

Ca(OH)2 + CO2 ==> CaCO3 + HOH

and believe it or not, that is balanced as it is

The left side has 1 Ca. So does the right side

The Left side has 1 C.  So does the right side.

The left side has 2 H. So does the right side

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6 0
3 years ago
Calculate the volume occupied<br>at s.t.p by 6.89<br>gas [H = 10, N = 14​
Nadya [2.5K]

Answer:

9.07 L

Explanation:

<em>Calculate the volume occupied at s.t.p by 6.89 g of NH₃ gas [H = 1.0, N = 14.0​].</em>

Step 1: Given and required data

  • Mass of NH₃ (m): 6.89 g
  • Molar mass of NH₃ (M): 17.0 g/mol

Step 2: Calculate the moles (n) of NH₃

We will use the following epxression.

n = m / M

n = 6.89 g / (17.0 g/mol) = 0.405 mol

Step 3: Calculate the volume occupied by 0.405 moles of NH₃ at STP

At STP, 1 mole of NH₃ occupies 22.4 L (assuming ideal behavior).

0.405 mol × 22.4 L/1 mol = 9.07 L

8 0
3 years ago
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