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liraira [26]
3 years ago
15

Which of the following pairs of elements is most likely to form an ionic bond?

Chemistry
1 answer:
omeli [17]3 years ago
5 0
While the other pairs, sodium and potassium are the metals, nitrogen and iodine, chlorine and bromine, helium and oxygen are the non-metals. They do not form ionic bond. Hence, the correct pairs of elements likely to form ionic compounds are, potassium and sulfur, magnesium and chlorine
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Kate’s blood volume is 3.8L. Before treatment,if her blood glucose was 170 mg/dL, how many grams of glucose were in her blood?
LiRa [457]

Answer:

6.460 gm  is the correct answer .

Explanation:

Given

Kate’s blood volume=3.8L

blood glucose=170\  mg/dL

As we know that

1\ dL= 10^{-1}\ litre

The 10^{-1}   includes the blood glucose of the 170\  mg/dL,

So 3.8L. of the Kate’s blood volume  can be determined by

=\ \frac{170 * 3.8 }{10^{-1} }

=170 * 38 \ mg

=6460\ mg

To convert into the gm we have divided by the 1000

6.460 \ gm

Therefore the glucose in her blood=

6.460 \ gm

3 0
3 years ago
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RUDIKE [14]
This can be solved using Dalton's Law of Partial pressures. This law states that the total pressure exerted by a gas mixture is equal to the sum of the partial pressure of each gas in the mixture as if it exist alone in a container. In order to solve, we need the partial pressures of the gases given. Calculations are as follows:

P = P1 + P2 + P3
P = (82.0575 atm.cm^3/mol.K)( 298.15 K)/1.50 x 10^3 cm^3) x (<span>0.158 mole + 0.09 mol + 0.044 mol) = 4.76 atm</span>
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4 years ago
I’m chemical reactions, the substances present at the start of the reaction are called
Romashka-Z-Leto [24]

THE SUBSTANCE PRESENT AT THE START OF THE REACTION ARE CALLED REACTANT

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Is it easy for gallium to change from solid to liquid? Why<br> subject is science
Alekssandra [29.7K]

Answer:

Solid gallium is a blue-gray metal with orthorhombic crystalline structure; very pure gallium has a stunning silvery color. Gallium is solid at normal room temperatures, but as well as mercury, cesium, and rubidium it becomes liquid when heated slightly

Explanation:

gallium is like water it freezes to turn solid!

...or like Bruce lee get it?

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Catalytic converters made of palladium (pd) reduce automobile pollution by catalyzing the reaction between unburned hydrocarbons
Doss [256]
Unburned hydrocarbon on reacting with oxygen undergoes combustion reaction. However, the activation energy of this reaction is significantly high. When a catalyst like Pd is added to the reaction system, it provides active sites for the reaction to occur. It acts are a heterogeneous catalyst. It is pertinent of note that catalyst is refereed as heterogeneous, when it exist in different phase as compared to reactant and products. In present case, reactants and products are in gas phase, while catalyst is in solid phase. Due to availability of larger surface area at active site of Pd, activation energy of reaction decreases and decrease in activation energy favors higher reaction rates. 
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