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Veseljchak [2.6K]
4 years ago
12

Please Answer ASAP

Chemistry
2 answers:
aalyn [17]4 years ago
4 0

Answer:

The correct answer is option C.

Explanation:

Empirical formula is the simplest chemical formula which tells us the whole number of atoms of each element present in the compound.  

For S_4O_2[/tex[ the empirical formula will be: [tex]S_{\frac{4}{2}}O_{\frac{2}{2}}=S_2O

For SO_4[/tex[ the empirical formula will be: [tex]S_{\frac{1}{1}}O_{\frac{4}{1}}=SO_4

For S_2O_6[/tex[ the empirical formula will be: [tex]S_{\frac{2}{2}{2}O_{\frac{6}{2}}=SO_3

For S_2O_3[/tex[ the empirical formula will be: [tex]S_{\frac{2}{2}{1}O_{\frac{3}{1}}=S_2O_3

Hence, the correct answer is option C.

adelina 88 [10]4 years ago
3 0

The answer to this question would be S2o6 which is C.


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In order for them to work, what must the control rods in a nuclear reactor contain? A. neutron-emitting material
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<h2>Answer:</h2>

The correct answer is option B which is neutron absorbing material.

<h3>Explanation:</h3>
  • In nuclear reactors, uranium absorbs a neutron, broke into two nuclei and releasing 3 more neutrons and energy. These neutrons further absorbed by other uranium atoms.
  • Control rods are used to control the fission reaction in nuclear reactors by absorbing neutrons.
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3 years ago
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alisha [4.7K]

Answer:

6 x 10⁵ kg Hg

Explanation:

The mass of mercury in the entire lake is found by multiplying the concentration of the mercury by the volume of the lake.

The volume of the lake is calculated in cubic feet:

V = (SA)x(depth) = (100mi²)(5280ft/mi)² x (20ft) = 5.57568 x 10¹⁰ ft³

Cubic feet are then converted to mL (1cm³=1mL)

(5.57568 x 10¹⁰ ft³) x (12in/ft)³ x (2.54cm/in)³ = 1.578856752 x 10¹⁵ mL

The mass of mercury is then found:

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3 0
3 years ago
Why calcium is more reactive than<br>magnesium?​
miskamm [114]

Answer:

Ca is more reactive because it has a lower

ionization energy than Mg. This is because it is lower in the periodic table. The added central electrons added over the extra period provide shielding in the center of the atom

4 0
3 years ago
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cetylene gas is often used in welding torches because of the very high heat produced when it reacts with oxygen gas, producing c
Bingel [31]

Answer:

0.60 mol

Explanation:

There is some info missing. I think this is the original question.

<em>Acetylene gas is often used in welding torches because of the very high heat produced when it reacts with oxygen gas, producing carbon dioxide gas and water vapor. Calculate the moles of oxygen needed to produce 1.5 mol of water.</em>

<em />

Step 1: Given data

Moles of water required: 1.5 mol

Step 2: Write the balanced equation

C₂H₂(g) + 2.5 O₂(g) ⇒ 2 CO₂(g) + H₂O(g)

Step 3: Calculate the moles of oxygen needed to produce 1.5 mol of water

The molar ratio of O₂ to H₂O is 2.5:1. The moles of oxygen needed to produce 1.5 mol of water are (1/2.5) × 1.5 mol = 0.60 mol

6 0
3 years ago
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Answer:

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Barium-5,2117

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