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iVinArrow [24]
3 years ago
15

Basic Chem:

Chemistry
1 answer:
Agata [3.3K]3 years ago
5 0
1. 2Fes2 + 5.5O2. Fe2O3 + 4SO2

2. is already balanced

3. 2k + Br2. KBr

4. SiO2 + 4HF. SiF4 + 2H2O

hope that helps
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Which of the following should have the largest Henry's law constant (kH) in water?XeCl2COCO2CH3CH3
geniusboy [140]

Answer:

CO

Explanation:

Henry's law constant reflects the solubility of a gas in water. The larger the kH, the more soluble is the gas. There is a rule that states that "like dissolves like", meaning polar is soluble in polar and nonpolar is soluble in nonpolar. Since water is polar, we have to consider the nature of these gases.

<em>Xe</em> nonpolar

<em>Cl₂</em> nonpolar

<em>CO</em> polar

<em>CO₂</em> nonpolar

<em>CH₃CH₃</em> nonpolar

CO is the only polar gas, so it has the largest kH.

3 0
3 years ago
Chemical equations must be balanced to satisfy ...?
murzikaleks [220]

Answer:

the law of conservation of matter.

Explanation:

I am in chem

4 0
3 years ago
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Using the van der Waals equation, calculate the pressure for a 1.25 mol sample of xenon contained in a volume of 1.000L at 75°C
alina1380 [7]

Answer:

ABC

Explanation:

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5 0
2 years ago
Which element would mostly have chemical properties similar to that of magnesium (Mg)?
DanielleElmas [232]

The elements of same group are placed in same group as they have similar properties. So Calcium is the element which resembles Mangesium.

Calcium and Magnesium both are alkaline earth metals.

They have similar properties as they have similar outer or valence shell electronic configuration

The general electronic configuration of alkaline earht metal is ns2

The electronic configuration of Mg [atomic number 12] and Ca [atomic number 20] are

[Ne]3s^{2}  and [Ar]4s^{2} respectively.


7 0
3 years ago
Based on periodic properties, choose the more metallic element from each of the following pairs.
dimulka [17.4K]

Answer:

Sr is the more metallic element

Bi is the more metallic element

O is the more metallic element

As is the more metallic element

Explanation:

One thing should be clear; metallic character increases down the group but decreases across the period.

Hence, as we move across the period, elements become less metallic. As we move down the group elements become more metallic.

This is the basis upon which decisions were made about the metallic character of each of the elements listed above.

7 0
3 years ago
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