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2 years ago

What are the special characteristics of chromium, iron , titanium and manganese

Chemistry

1 answer:

adoni [48]2 years ago

7 0

Answer:

The two most useful properties of titanium include its resistance to corrosion and its high strength-to-weight ratio.

Chromium metal is highly valuable due to its high corrosion resistance and hardness.

Manganese is a metal with important industrial metal alloy uses, particularly in stainless steels.

Explanation:

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What is the volume of 5.8g of H2?

BartSMP [9]

At standard temperature and pressure, one mole of gas occupies 22.4 L. Knowing this, we must convert the grams to moles and moles to liters to get your answer. Here's how you do it!
$\frac{5.8gH2}{1} | \frac{1moleH2}{2.0gH2}| \frac{22.4LH2}{1moleH2} \\ \frac{5.8*1*22.4LH2}{2.0} \\ \frac{129.92LH2}{2.0} \\ 64.96LH2 \\ 65LH2$
With significant figures accounted for, 5.8 grams of hydrogen gas occupies 65 L.

Hope this helps!

4 0

2 years ago

Sodium hydroxide is available commercially as a 50.0% by weight aqueous solution. The density of the solution is 1.53 g/mL. Calc

bulgar [2K]

Answer:

[NaOH] = 19.1 M

Last option.

Explanation:

Sodium hydroxide is available commercially as a 50.0% by weight aqueous solution.

50% by weight means, that in 100 g of solution we have 50 grams of solute.

Molar mass of solute: 40 g/m

Mass / Molar mass = moles

50 g / 40 g/m = 1.25 moles

These are the moles of solute in 100 grams of solution, so we must use density data, so we can find out our volume.

Solution density = Solution mass / Solution volume

1.53 g/mL = 100 g / Solution volume

Solution volume = 100 g / 1.53 g/mL

Solution volume = 65.3 mL

1.25 moles of solute are in 65.3 mL of solution

Molarity = moles /L

Let's convert 65.3 mL in L

65.3 / 1000 = 0.0653 L

1.25 moles /0.0653 L = 19.1 M

3 0

2 years ago

Several types of RNA are involved in carrying out protein synthesis. Beginning with the information copied from DNA, in what ord

777dan777 [17]

Answer is tRNA, mRNA, rRNA

4 0

2 years ago

Read 2 more answers

Which best describes the effect of jj Thomson discovery

beks73 [17]

JJ Thomson discovered electrons using the cathode ray. Electrons are negatively charged particles that orbit around the nucleus of an atom. Finding out that there was a negative charge to balance out the positive charge. This later helped develop Hund's Rule and the Pauli Exclusion Principle.

7 0

2 years ago

The activation energy for a reaction is changed from 184 kJ/mol to 59.0 kJ/mol at 600. K by the introduction of a catalyst. If t

slega [8]

Answer:

The catalyzed reaction will take time of $5.11\times 10^{-8} years$ .