i need help with this

Answer:

An alloy is a mixture or metallic-solid solution composed of two or more elements. Examples of alloys include materials such as brass, pewter, phosphor bronze, amalgam, and steel. Complete solid solution alloys give single solid phase microstructure. Partial solutions give two or more phases that may or may not be homogeneous in distribution, depending on thermal history. An alloy’s properties are usually different from those of its component elements.

Examples of alloys include materials such as brass, pewter, phosphor bronze, amalgam, and steel. Complete solid solution alloys give single solid phase microstructure. Partial solutions give two or more phases that may or may not be homogeneous in distribution, depending on thermal history. An alloy’s properties are usually different from those of its component elements.

image

Steel: Steel is an alloy whose major component is iron.

Alloy constituents are usually measured by mass. An alloy is usually classified as either substitutional or interstitial, depending on its atomic arrangement. In a substitutional alloy, the atoms from each element can occupy the same sites as their counterpart. In interstitial alloys, the atoms do not occupy the same sites. Alloys can be further classified as homogeneous (consisting of a single phase), heterogeneous (consisting of two or more phases), or intermetallic (where there is no distinct boundary between phases).

Alloying a metal involves combining it with one or more other metals or non-metals, which often enhances its properties. For example, steel is stronger than iron, its primary element. Physical properties (density, reactivity, conductivity) of an alloy may not differ greatly from those of its constituent elements, but its engineering properties (tensile strength and shear strength) may be substantially different.

Explanation:

Answer:

76.5 grams

Explanation:

Solubility of sodium chloride = [tex]\dfrac{30.6}{100}=0.306\ \text{g/mL}[/tex]

Now volume of water is 250 mL

We have to find the amount of NaCl that can be dissolved in the above mentioned amount of water

Let the mass of NaCl that can be dissolved be m so

[tex]\dfrac{m}{250}=0.306\\\Rightarrow m=250\times0.306\\\Rightarrow m=76.5\ \text{g}[/tex]

The mass of NaCl that can be dissolved is 76.5 grams.

Answer:

166.56g of NH3 are produced

Explanation:

The reaction of N2 with H2 to produce NH3 is:

N2 + 3H2 → 2NH3

Where 1 mole of N2 produce 2 moles of NH3

4.89 moles of N2 with excess of H2 produce:

4.89 moles N2 * (2 moles NH3 / 1 mole N2) = 9.78 moles NH3

As molar mass of NH3 is 17.031g/mol, mass of NH3 produced is:

9.78 moles * (17.031g / mol) =

Answer:

Explanation:

since the forces of attraction are strong the molecules are strongly bonded and thus require high energy to break that bond..

Answer:

The motion of the water molecules increase as heat is added.

Explanation:

Hello!

In this case, in general terms, one can know that molecules and heat have a relationship by which one affects the other, more specifically, the heat affects how the molecules behave. In such a way, as the heat added to a system increases its internal energy, one can notice that energy speeds up the molecules because they acquire such energy and the motion starts being increased, it means, the molecules start moving or vibrating faster than before of that heat addition. This is due to the increase of the internal energy, which based on the first law of thermodynamics is related with the velocity of the molecules.

Best regards!

it's d

o3o

(sorry still typing because I need 20 characters to submit this)

Answer:

Image result for The arrangement of the elements from left to right in the period 4 on the periodic table is based on

The periodic table of elements arranges all of the known chemical elements in an informative array. Elements are arranged from left to right and top to bottom in order of increasing atomic number. Order generally coincides with increasing atomic mass. The rows are called periods

Explanation:

Answer:atomic mass

Explanation:

Answer:

Molarity is the concentration of x moles of solute in 1 L of solution. ... What is the molarity of a solution prepared by dissolving 15.0 g of NaOH in enough water to make a total ... Litres of solution=225mL soln ×1 L soln1000mL soln =0.225 L soln ... (MM = 97.10 g/mole) dissolved in 75.00mL of D.I. water was titrated with KOH.

Explanation:

i just know XD

Answer:

2.17 so have a nice day

hope its right

Answer:

Orbit/Orbital

Explanation:

Elections orbit around the nucleus of an atom.

Answer:Kilometer, I think

Explanation:

Answer:

Your answer will be A.

Explanation:

i promise its right good luck :)

Less current flows in the 1.5 V circuit. The light bulbs are less bright and the correct option is option A.

Current, in the context of electricity, refers to the flow of electric charge in a circuit. It is the rate at which electric charges (usually electrons) move through a conductor.

Current is measured in amperes (A) and is represented by the symbol "I." In a closed circuit, current flows from the positive terminal of a power source, such as a battery, to the negative terminal.

The amount of current in a circuit is determined by the voltage of the power source and the resistance of the circuit. Higher voltages generally result in greater current flow, while higher resistance reduces the current.

Thus, the ideal selection is option A.

Learn more about Current, here:

https://brainly.com/question/2285102

#SPJ6

Answer:

13000

Explanation:

The kilogram, or kilogramme, is the base unit of weight in the Metric system. It is the approximate weight of a cube of water 10 centimeters on a side.

A gram is a unit of weight equal to 1/1000th of a kilogram. A gram is the approximate weight of a cubic centimeter of water.

Answer:

See explanation

Explanation:

a) The rate equation for the mechanism in equation 1 is [(CH3)3CCI] [OH^-]

b) The rate equation for the mechanism in equation 2 is [(CH3)3CCI]

c) The first equation is second order while the first equation is first order.

d) The rate equation shows the species  that are involved in the rate determining step. Hence by manipulating the concentration of the species that appear in each rate equation, we can exactly know which of the rate equations represents the actual mechanism of the reaction.

e) The diagram required is shown in the image attached to this answer.

Answer:

n = 1.21mol

Explanation:

Using the formula:

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

R = gas constant (0.0821 Latmk mol)

n = number of moles

T = temperature (K)

T(K) = 25°C + 273.15

T(K) = 298.15K

Pressure in 500.0 mm Hg = 500/760

= 0.657atm

PV = nRT

0.657 × 45 = n × 0.0821 × 298.15

29.565 = 24.478n

n = 29.565/24.478

n = 1.207

n = 1.21mol

Answer:

90.21 J

Explanation:

Given that,

Mass of a rock, m = 26.9 g = 0.0269 kg

Speed of the rock, v = 81.9 m/s

We need to find the kinetic energy of the rock. It can be calculated using the formula as follows :

[tex]E=\dfrac{1}{2}mv^2\\\\E=\dfrac{1}{2}\times 0.0269\times 81.9^2\\\\E=90.21\ J[/tex]

So, the kinetic energy of the rock is 90.21 J.

Answer:

C. 65 percent

According to the law of conservation of Mass:

In a chemical reaction mass can neither be created nor be destroyed

So, we can say that: Mass of A + Mass of B = Mass of C

In the given reaction,

One of the reactants weigh 5 grams and another one weighs x grams

The mass of the product of this reaction is 9 grams

Mass of reactant B:

Mass of A + Mass of B = Mass of C

5 + x = 9

x = 4 grams

Answer:

2Fe(NO₃)₃  +  3MgO  →  Fe₂O₃  + 3Mg(NO₃)₂

Explanation:

Given chemical species:

  Reactants:  Iron(III) nitrate

                      Magnesium oxide

 Products:  Iron (III) oxide

                   Magnesium nitrate

The chemical symbols:

   Fe(NO₃)₃  +  MgO  →  Fe₂O₃  + Mg(NO₃)₂

The reaction of this type is called a double displacement reaction.

 Now let us ensure that it is balanced;

         aFe(NO₃)₃  +  bMgO  →  cFe₂O₃  + dMg(NO₃)₂

Conserving Fe;

           a  = 2c

Conserving N;

           3a  = 2d

 Conserving O

            9a  + b  = 3c + 6d

 Conserving Mg

           b  = d

let a  = 1, c  = [tex]\frac{1}{2}[/tex] , d = [tex]\frac{3}{2}[/tex], b =  [tex]\frac{3}{2}[/tex]

 multiply through by 2;

     a = 2, c  = 1, d  = 3 and b  = 3

     2Fe(NO₃)₃  +  3MgO  →  Fe₂O₃  + 3Mg(NO₃)₂

A. A force that acts on a body moving in a circular path

Answer:

a oxygen level is the deferent rate or hight witch the oxygen levels sits at

Answer:

3.25*10^23  atoms

Answer:

C. 10

Explanation:

So wr for protons is 2 and wr for alpha particles is 20. In these terms, alpha particles cause ten times more damage then protons.

10 times more dangerous are alpha particles than protons. The correct option is C. 10.

Radiation is emission or transmission of energy in the form of waves.

The waves are electromagnetic waves, infrared rays, x- rays, ultraviolet rays, etc.

Thus, the correct option is C, 10.

Learn more about radiation

https://brainly.com/question/13934832

#SPJ5