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2 years ago

How is platinum used to help regulate the release of harmful gases from cars?

Chemistry

2 answers:

FromTheMoon [43]2 years ago

7 0

platinum is used in catalytic converters so it causes harfull gas.

lozanna [386]2 years ago

4 0

Answer:

Platinum is used as a catalytic converter

Explanation:

At present, internal combustion vehicles are equipped with an element called catalytic converter, which is one of the most important components for the control of emissions of polluting gases resulting from combustion produced by engines. Its main function is to transform the polluting gases resulting from the burning of fuel into other gases that are more environmentally friendly. This element is located under the vehicle along the exhaust system pipe after the oxygen sensor.

There are different types of catalytic converters, but modern vehicles are equipped with three-way catalytic converters, referring to the three kinds of pollutant gases that must be reduced (CO, HC and NOX). The converter uses two types of catalysts, one of reduction and another of oxidation. Both consist of a ceramic structure covered with normally platinum, rhodium and palladium metal. The main idea was to create a structure that exposes the catalyst surface to the maximum against the flow of exhaust gases, also minimizing the amount of catalyst required since it is very expensive.

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A soft drink contains 11.5% sucrose (C12H22O11) by mass. How much sucrose, in grams, is contained in 355 mL (12 oz) of the soft

luda_lava [24]

Answer:

42.5 g

Explanation:

Calculate the mass of the soft drink given the density and volume:

355 mL × 1.04 g/mL = 369.2 g

Now calculate the mass of sucrose given the percentage:

0.115 × 369.2 g = 42.46 g

Rounded to 3 significant figures, the mass is 42.5 g.

5 0

2 years ago

Read 2 more answers

A sample of gasoline contains various hydrocarbons, which comprise atoms of carbon, hydrogen, and oxygen. The hydrocarbons mix t

Naddika [18.5K]

Answer:

mixture
homogenous mixture (of hydrocarbons)
compound

Explanation:

Mixture can be easily separated by physical methods. Homogeneity and heterogeneity of a mixture is determined by whether the components there in are in a single phase and evenly distributed or not.

A solution has a solute evenly dissolved in solvent to form a liquid substance.

An element is the basic form of substance which cannot be broke down into any other simpler unit.

I hope this was helpful.

4 0

2 years ago

What is the element with the nlx notation of 5d2?

lesantik [10]

The element with the nlx notation of 5d2 in the periodic table is hafnium with a symbol of hf. It is a chemical element and has an atomic number 72. Hafnium chemically resembles zirconium and is found in many zirconium minerals but it is a complete contrast of zirconium which is also chemically similar to hafnium.

7 0

2 years ago

The volume of distilled water that should be added to 10.0 mL of 6.00 M HCl(aq) in order to prepare a 0.500 M HCl(aq) solution i

bija089 [108]

Answer:

110ml

Explanation:

Using the dilution equation, C1V1 = C2V2

Where C1 is the initial concentration of solution

C2 is final concentration of solution

V1 is intital volume of solution

V2 is final volume of solution.

From the question , C1=6M, C2=0.5M, V1=10ml, V2=?

$V2 =\frac{C1V1}{C2}$

$V2 =\frac{10*6}{0.5}$

$V2 =120ml$

volume of water added = final volume -initial volume

= 120-10

=110ml

3 0

2 years ago

Drinking water may contain a low concentration of lead ion (Pb2 ) due to corrosion of old lead pipes. The EPA has determined tha

Lynna [10]

Answer:

3.861x10⁻⁹ mol Pb⁺²

Explanation:

We can define ppm as mg of Pb²⁺ per liter of water.

We calculate the mass of lead ion in 100 mL of water:

100.0 mL ⇒ 100.0 / 1000 = 0.100 L

0.100 L * 0.0080 ppm = 8x10⁻⁴ mg Pb⁺²

Now we convert mass of lead to moles, using its molar mass:

8x10⁻⁴ mg ⇒ 8x10⁻⁴ / 1000 = 8x10⁻⁷ g

8x10⁻⁷ g Pb²⁺ ÷ 207.2 g/mol = 3.861x10⁻⁹ mol Pb⁺²

4 0

2 years ago