Which of the following has the greatest electron affinity? O S Se Si Ga

OSHA standards appear in the ___________ and are then broken down into ____________.

Alex_Xolod [135]

OSHA standards appear in the Code of Federal Regulations (CFR) and was then broken down into two parts. It contains standards to ensure a comfortable and high quality research tools like the databases. These standards are to be strictly monitored to ensure the safety of workers.

3 0

4 years ago

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To form a hydrogen bond, what must the non-hydrogen atom (NN, OO, or FF) involved in the bond possess?

riadik2000 [5.3K]

Answer:

It can occur with any of the atoms mentioned

Explanation:

Hydrogen bonds are the most intense type of intermolecular force that occurs between permanent dipoles of molecules, where the positive pole is always hydrogen, and the negative pole can be fluorine(F), oxygen(O) or nitrogen(N), since these elements are quite electronegative.

In other words, these atoms most strongly attract double-bonded electrons and are negatively charged.

An example to consider is hydrogen fluoride (HF) molecules, a polar molecule. In the solid state, its molecules attract, so that the positive (hydrogen) pole of one molecule attracts the negative (fluorine) pole of another.

4 0

4 years ago

Does a reaction occur when aqueous solutions of silver(i) nitrate and nickel(ii) iodide are combined?

Serggg [28]

Answer : YES, the reaction will occur.

Explanation : When we mix the aqueous solutions of Silver nitrate with Nickel iodide the reaction that occurs is stated below :-

$2 AgNO_{3} + NiI _{2} ----\ \textgreater \ Ni (NO_{3}) _{2} + 2 AgI$

A double displacement reaction occurs in this case. It means their is exchange of cations (positive ions) and anions (negative ions) between the two reactant compounds. Thus,the two new products which are obtained is the result of switching of ions between the reactants.

7 0

3 years ago

In 2013 the world consumption of oil was estimated at 3.3 ´ 1010 barrels per year. The world reserves of oil in 2013 were estima

Serga [27]

Answer:

about 37 years

Explanation:

If 100% of the estimated reserves are used at the current rate, it will take ...

(1.234·10^12 bbl)/(3.3·10^10 bbl/yr) = 37.4 yr

It will take about 37 years to deplete the reserves.

__

Your calculator can perform arithmetic using scientific notation.

3 0

3 years ago

Given 2Na + 2H2O → 2NaOH + H2, how many grams of oxygen are produced if 300.00 grams of Na are reacted with water?

OlgaM077 [116]

First you have to find the number of moles , then you have to apply stoichometry to find the number of moles of H2 gas , after that you can determine its mass.

8 0

3 years ago