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3 years ago

6

The number of _______________ in the nucleus determines an element's atomic number. this number defines the name of the element,

no other element shares that atomic number.

1 answer:

AleksandrR [38]3 years ago

4 0

The number of <u>protons</u> in the nucleus determines an element's atomic number.

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Monel metal is a corrosion-resistant copper-nickel alloy used in the electronics industry. A particular alloy with a density of

Blababa [14]

Answer:

Based on the given question, the dimensions of the plate is 15 cm in length, 12.5 cm in width, and 3.50 mm in thickness (0.350 cm). Now the volume of the plate will be,

V = 15 cm × 12.5 cm × 0.350 cm = 65.62 cm³

A hole of diameter 2.50 cm is drilled through the center of the plate, at the height of 3.50 mm or 0.350 cm. Now the volume of the hole is π(r)²h,

= 22/7 × (1.25 cm)² × 0.350 cm = 1.72 cm³

Thus, the volume of the plate will be determined by subtracting the volume of plate with the volume of hole, which will be,

65.62 cm³ - 1.72 cm³ = 63.9 cm³

The density of the alloy is 8.80 g/cm³, therefore, the mass of the alloy can be determined by using the formula, mass = density * volume

mass = 8.80 g/cm³ × 63.9 cm³ = 562.32 grams

Of the total alloy, 0.090 percent is Si, that is,

(0.090/100) × 562.32 g = 0.506 grams of Si

The natural abundance of the element is not determined by mass but by the number of atoms it possess. For this Avogadro's number and atomic mass of Si is used. Now the number of atoms of Si present is,

(0.506 g) (1 mol/28.0855 g) (6.023 × 10²³ atoms /mol) = 1.08 × 10²² Si atoms

Of these Si atoms, 3.10 percent are Si-30 so,

= (3.10 / 100) × (1.08 × 10²² atoms) / 1000 = 3.34 × 10²⁰ atoms of Si-30. or 3.4 × 10²⁰ atoms

4 0

3 years ago

What is the answer to this question?

scZoUnD [109]

Answer:

DUDE ITS THE THIRD ANSWER FROM THE TOP

....... HOPE THIS HELPS ✌

8 0

3 years ago

Which of the following are monomers of the genetic material DNA?

gizmo_the_mogwai [7]

Answer:
<u>Nucleotides</u> are the monomers of DNA.

Explanation:
Nucleic Acids polymers (DNA and RNA) are made up of repeating called Nucleotides.
Nucleotides consist of following parts;

1) Nucleoside: Which is made up of 5-carbon sugar and a <span>nitrogenous base. Colored in RED.

2) A Phosphate group. Colored in BLUE.</span>

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4 years ago

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According to these graphs, which city has the most annual rainfall?

vlabodo [156]

Reno, nevada since it stays constantly higher than barrow alaska

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3 years ago

Read 2 more answers

77julia77 [94]

Answer:

Explanation:

THE COLOR IS TRANSPARENT.
IT IS THE SOLID STATE OF WATER
Ice cube has a mass of 10 grams.
THEY ARE TIGHTLY PACKED WITH ONE ANOTHER AND POSSESS MOTION

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3 years ago