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3 years ago

Will platinum (pt) metal react with a lead(ii) nitrate solution?

1 answer:

5 0

To answer this question, we must first look at the reactivity series table. From the table, we can see that those which are located above are the most reactive while those below are less reactive. Which means that elements cannot replace those elements which are above them.

From the series, platinum is below lead, hence there will be no reaction.

Answer:

No reaction

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A scientist has isolated a fatty acid that has 26 carbons. most of the carbon atoms in the fatty acid chain are connected by sin

Shtirlitz [24]

Answer:
<span>Based on giveninformation, the compound is a <u>Poly Unsaturated</u> fatty acid.

Explanation:
Fatty acids are carboxylic acids with -COOH functional group and a chain of hydrocarbons.

Fatty Acids are classified as,

i) Saturated Fatty Acids:
Those Fatty Acids in which there is no double bond between the carbon chain are called as saturated fatty acids.

Examples:
Lauric Acid </span>CH₃(CH₂)₁₀COOH<span>

Myristic Acid </span>CH₃(CH₂)₁₂COOH<span>

Palmitic Acid </span>CH₃(CH₂)₁₄COOH

ii) Unsaturated Fatty Acids:
Those Fatty Acids in which contain a single double bond (mono-unsaturated) or more than one double bond (poly-unsaturated) d between the carbon atoms in a chain are called as unsaturated fatty acids.

Examples:
<span>Linoleic acid
</span>
<span>Vaccenic acid

</span><span>Palmitoleic acid

The saturated fatty acid containing 26 carbon atoms is called as Cerotic acid. While cerotic acid containing a double bond at position 3 and 9 has a IUPAC name H</span>exacosa-3,9-dienoic acid with following structure.

3 0

3 years ago

What is the pH of a solution with a 3.2 x 10−6 M hydronium ion concentration?

Rainbow [258]

Answer:

Explanation:

The pH of a solution can be found by using the formula

$pH = - log ([ { H_3O}^{+}])$

H3O+ is the hydronium ion

From the question we have

$pH = - log(3.2 \times {10}^{ - 6} ) \\ = 5.49485..$

We have the final answer as

Hope this helps you

4 0

3 years ago

How many grams of calcium chloride are needed to produce 10. 0 g of potassium chloride?

ozzi

Answer:

<u>7.44 grams CaCl2 will produce 10.0 grams KCl.</u>

Explanation:

The equation is balanced:

I've repeated it here, with the elements corrected for their initial capital letter.

CaCl2( aq) K2CO3( aq) → 2KCl( aq) CaCO3( aq)

This equation tells us that 1 mole of CaCl2 will produce 2 moles of KCl.

If we want 10.0g of KCl, we need to convert that mass into moles KCl by dividing by the molar mass of KCl, which is 74.55 grams/mole.

(10.0 grams KCl)/(74.55 grams/mole) = 0.1341 moles of KCl.

We know that we'll need half that amount of moles CaCl2, since the balanced equation says we'll get twice the moles KCl for every one mole CaCl2.

So we'll need (0.1341 moles KCl)*(1 mole CaCl2/2moles KCl) = 0.0671 moles CaCl2.

The molar mass of CaCl2 is 110.98 grams/mole.

(0.0671 moles CaCl2)*(110.98 grams/mole) = 7.44 grams CaCl2

<u>7.44 grams CaCl2 will produce 10.0 grams KCl.</u>

6 0

2 years ago

Why do scorpions glow on a black light?

Lana71 [14]

Answer:

All scorpions fluoresce under ultraviolet light, such as an electric black light or natural moonlight. The blue-green glow comes from a substance found in the hyaline layer, a very thin but super tough coating in a part of the scorpion's exoskeleton called the cuticle

Explanation:

6 0

3 years ago

Read 2 more answers

How does density vary with temperature?

nexus9112 [7]

Things expand when heated. therefore the molecules are farther apartand the matierial is less dense. Things expand because their molecules are vibrating faster and are taking up more space

3 0

4 years ago

Read 2 more answers