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Firdavs [7]
4 years ago
15

Question 2

Chemistry
1 answer:
sasho [114]4 years ago
5 0
I’m pretty sure the answer would be

24.6078
Hopefully that helps
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A compound is 12.7% Al, 19.7% N, and 67.6% O. Determine its emperical formula.
gizmo_the_mogwai [7]

Answer:

AlN₃O₉

Explanation:

Assume that you have 100 g of the compound.

Then you have 12.7 g Al, 19.7 g N, and 67.6 g O.

1. Calculate the <em>moles</em> of each atom

Moles of Al = 12.7 × 1/26.98 = 0.4707 mol Al

Moles of N = 19.7 × 1/14.01    =  1.406   mol N

Moles of O = 67.6 × 1/16.00  = 4.225   mol O

2. Calculate the <em>molar ratios</em>.

Al: 0.4707/0.4707 = 1

N: 1.406/0.4707    = 2.987

O: 4.225/0.4707   = 8.976

3. Determine the <em>empirical formula</em>

Round off all numbers to the closest integer.

Al: 1

N: 3

O: 9

The empirical formula is AlN₃O₉.

3 0
4 years ago
What type of reaction is: iron + lead nitrate -&gt; lead +
Vladimir [108]

Answer:

C. single replacement

Explanation:

In a single replacement reaction, one atom replaces another.

The general form of a single replacement reaction is: A + Bc ⇒ Ac + B

A   +  B  ×  c      ⇒   B   +  A × c

↓       ↓      ↓            ↓       ↓    ↓

Fe +  Pb(NO₃)₂ ⇒  Pb  + Fe(NO₃)₂

Iron switched places with lead so the reaction is a single replacement reaction.

Hope this helps.

4 0
4 years ago
How many significant figures are in 0.0000003 g?
stiv31 [10]

Answer:

Therefore, none of the zeros is a significant figure and hence there is only one significant figure in this measurement in support G. The measurement is 0.7 minutes. Here again, zero is not a significant figure and therefore the only significant figure is one which is seven in support Edge.

Explanation:

6 0
2 years ago
Read 2 more answers
13. Gas A and gas B (both unreactive) are allowed to mix. The total pressure is found to be 3.50 atm. f gas B
murzikaleks [220]
C sorry if it’s wrong
7 0
3 years ago
The largest population that an environment can support is called _____.
Digiron [165]

Answer:

D) caring capacity

Explanation:

<h3>The largest population that an environment can support is called its carrying capacity.</h3>

<h2>hope it helps.</h2><h2>stay safe healthy and happy.</h2>
4 0
3 years ago
Read 2 more answers
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