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vfiekz [6]
3 years ago
9

Which statements accurately describe trends found in the periodic table? check all that apply. henry moseley established a perio

dic table that arranges the elements by atomic number. the atomic mass decreases from left to right on the periodic table. the atomic number increases from left to right on the periodic table. nonmetals create a "staircase" down the periodic table. metalloids have the characteristics of both metals and nonmetals?
Chemistry
2 answers:
Molodets [167]3 years ago
6 0

YES thanks! A C and E are correct

Svet_ta [14]3 years ago
6 0

Answers are:

1) henry moseley established a periodic table that arranges the elements by atomic number.

2) the atomic number increases from left to right on the periodic table.

3) metalloids have the characteristics of both metals and nonmetals.

Henry Gwyn Jeffreys Moseley (1887–1915) proposed that the number of positive nuclear charges (protons) in atom is equal to its atomic number in the periodic table.

Metalloids create a "staircase" down the periodic table.

For example, germanium (symbol: Ge) is a lustrous, hard, grayish-white metalloid in the carbon group.

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The volume of the rock is 150
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2 years ago
Which of the following could result from having few or no ?-1,6 linkages in glycogen? Select all that apply.
Katen [24]

Answer:

The correct answer is 1 glycogen degradation would slow down.

Explanation:

Glycogen is the principle storage polysaccharide present in the liver and muscle of human body.

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   The alpha-1,6-glycosidic linked glucose of glycogen is finally get separated from glycogen by the catalytic activity of alpha-1,6-glycosidase enzyme in the final step of glycogenolysis.

 According to the given question if there is no alpha-1,6-glycosidic linkage in the glycogen then glycogen degradation will slow down.

     

5 0
3 years ago
What is the likely impact of water's high specific heat on life on Earth? (3 points)
statuscvo [17]

Answer:

Marine life is least affected by the temperature fluctuations of the atmosphere.

Explanation:

The high specific heat capacity of water means that it takes much more energy to raise the temperatures of water by one (1) degree than land. This means that on a hot sunny day, land temperatures would increase dramatically while ocean temperatures would only rise slightly. Conversely,  at night, the land cools rapidly while oceans cool slowly hence the temperatures drop slightly.

7 0
2 years ago
How many moles of H2O are needed to produce 5.6 mol of NaOH?<br> Na2O + H2O --&gt; 2NaOH
navik [9.2K]

Answer: 2.8 moles

Explanation:

The balanced equation below shows that 1 mole of sodium oxide reacts with 1 mole of water to form 2 moles of sodium hydroxide respectively.

Na2O + H2O --> 2NaOH

1 mole of H2O = 2 moles of NaOH

Let Z moles of H2O = 5.6 mole of NaOH

To get the value of Z, cross multiply

5.6 moles x 1 mole= Z x 2 moles

5.6 = 2Z

Divide both sides by 2

5.6/2 = 2Z/2

2.8 = Z

Thus, 2.8moles of H2O are needed to produce 5.6 mol of NaOH

3 0
3 years ago
Draw the major organic product(s) for the reaction. The starting material is a benzene ring with one substituent. The substituen
Mice21 [21]

Answer:

See Explanation

Explanation:

In electrophilic aromatic substitution, the benzene ring undergoes substitution when it is reacted with suitable electrophiles.

The products of electrophilic aromatic substitution depends on the substituents already present on the benzene ring. Some substituents activate the ring towards electrophilic substitution and direct the incoming electrophile to the ortho and para positions on the ring while some substituents deactivate the benzene ring towards electrophilic substitution and direct the incoming electrophlle to the meta position on the ring.

The amide substituent is moderately activating and is an ortho, para director hence the products shown in the mage attached to this answer.

3 0
2 years ago
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