Platinum, Copper, Palladium, Silver
Explanation:
These metals noble metals that are inert and nonreactive to a large extent. This is why they used for a wide range of engineering works.
- They are classified as platinum group metals.
- These metals are a group of minerals that are inert and nonreactive.
- They have huge economic values.
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Answer:
The protein has 4 subunits: 2 subunits of 90 kDa, 1 subunit of 160 kDa and 1 subunit of 60 kDa
Explanation:
In gel electrophoresis, the SDS agent produces denaturation of the protein and confers negative charge, so the protein subunits can migrate according to their masses. It produces dissociation of the protein in its subunits but it cannot disrupt disulphyde bridges (S-S) that can bond subunits together.
From the data, with SDS we observe 3 bands ⇒ 180 kDa + 160 kDa + 60 kDa
The addition of dithiotreitol (DTT), a reducing agent, produces the disruption of disulphyde bridges. From the data:
With DTT ⇒ 160 kDa + 90 kDa + 60 kDa
We observe that 160 kDa and 60 kDa subunits are conserved (they are the same as with SDS only), but 180 kDa subunit is missing and in its place appears a band of 90 kDa - a half 180 kDa.
So, the band at 180 kDa is composed by two subunits bonded by a disulphyde bridge.
Therefore, the composition of the protein is: <em>1 subunit of 160 kDa, 2 subunits of 90 kDa and 1 subunit of 60 kDa</em>.
59.78175 kPa is the pressure inside the container when a cylinder at 48.0 atm pressure and 17.0°C releases 35.0 mL of carbon dioxide gas into a 4.00 L container at 24.0°C.
<h3>What is an ideal gas equation?</h3>
An ideal gas equation states the relationship between the moles of the substance, temperature, pressure, and volume. The ideal gas equation is given as, PV=nRT
Given data:
=48.0 atm
=3T_1=17.0°C
=?
=4.00 L
=24.0°C
=
= 0.59 atm = 59.78175 kPa
Hence, 59.78175 kPa is the pressure inside the container when a cylinder at 48.0 atm pressure and 17.0°C releases 35.0 mL of carbon dioxide gas into a 4.00 L container at 24.0°C.
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Answer:
170 mL
Explanation:
<u>The total volume to be reported should be 170 mL.</u>
According to the significant rule in mathematical operations, final answers are usually reported to reflect the accuracy of the least accurate number.
In this case, the least accurate of all the volumes has zero significant digits after the decimal, hence, the final answer after the mathematical operation should also have no significant digits after the decimal.
18 + 128.7 + 23.45 = 170.15
<em>Therefore, the total volume to be reported when significant digits are taken into account would be </em><em>170 mL.</em>
The answer for The question is (D)The density changed