A 25°C sample of gas has a volume of 5.0 L. What will it’s volume be if it is heated to 50.0°C?

Answers

Answer 1

Answer: The volume of the gas will be 0.8385 when heated to 50.0°C

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Which process melts an ore to separate useful metals from the rest of the elements in the ore? smelting, mining, prospecting, alloys

Answers

The process melts an ore to separate useful metals from the rest of the elements in the ore is called smelting. The ore is heated beyond its melting point to extract the metal with the help of oxidizing agents such as air or reducing agents such as coke.

Converting carbon to nitrogen by increasing the number of protons from 6 to 7 and decreasing the number of neutrons from 8 to 7 is an example of what type of decay?

Answers

Answer: The given decay process is beta decay.

Explanation:

Beta-decay is defined as the decay process in which a neutron gets converted into a proton and an electron releasing a beta-particle. The beta particle released carries a charge of -1 units and has a mass of 0 units.

$_Z^A\textrm{X}\rightarrow _(Z+1)^A\textrm{Y}+_(-1)^0\beta$

The chemical reaction for converting carbon nucleus to nitrogen nucleus, the equation follows:

$_6^(14)\textrm{C}\rightarrow _7^(14)\textrm{N}+_(-1)^0\beta$

Thus, the given decay process is beta decay.

this is beta decay as the mass number stays the same but proton number changes, this is specifically beta minus as a neuron changes into a proton

There are two alloys, one is 1 part silver and 5 parts copper and the other 3 parts silver and 1 part copper are mixed to form 350 pounds of an alloy that is equal in silver and copper content.How many pounds of each should be used?

Answers

Lets make x equal the number times you use the 1/5 ratio alloy and y equal the number of times you use the 3/1 ratio alloy. You can make the equation (x+3y)-(5x+y)=0 and (x+3y)+(5x+y)=350
Then you can make the system of equation of:
-4x+2y=0 (this is y=2x)
6x+4y=350
You can make 6x+8x=350 by through substitution and solve of x.
14x=350
x=25 (which means y=50)

that means that the weight of the 1/5 ratio alloy is 150 pounds.
(25+(5x25))=150
the weight of the 3/1 ratio alloy is 200 pounds.
((50x3)+50)=200

I hope this helps.

How many grams of Cl are in 535 g of CaCl2?

Answers

m( $Ca Cl_(2)$ )=535 g
m(Cl)=?
The molar mass of $CaCl_(2)$ = 40.08 + 2 * 35.45 = 110.98
The atomic mass of Cl: 35.45 ( you can see it in the Periodic table)
110.98 g $CaCl_(2)$ - 35.45 * 2 g Cl
535 g $CaCl_(2)$ - x g Cl
Proportion:
110.98 : 535 = (35,45 * 2) : x
x = 535 * 35.45 * 2 / 110.98 = 37,931.5/110.98 = 341.79 g
Answer: m(Cl)=341.79 g

One mole of an ideal gas is held at standard conditions. At what Kelvin temperature would the pressure be doubled?

Answers

The pressure of the gas will become double when its Kelvin temperature becomes $\boxed{{\text{twice}}}$ its initial value.

Further Explanation:

Ideal gas equation:

Ideal gas is just a theoretical concept and practically no gas can act as ideal. It can be considered as group of random moving particles having perfectly elastic collisions between them.

Ideal gas equation for one mole of gas is mentioned below.

PV = RT …… (1)

Here,

P is the gas pressure.

V is the gas volume.

T is the absolute temperature of gas.

R is the universal gas constant.

Standard conditions refer to state when pressure of gas is 1 atm and its temperature is 273 K.

Consider P’ and T’ to be new pressure and temperature respectively while all other terms in ideal gas equation remains constant. Equation (1) then modifies as follows:

P’V = RT’ …… (2)

Since new pressure is doubled, P’ becomes 2P. Equation (2) becomes,

(2P)V = RT’ …… (3)

Dividing equation (3) by equation (1), we get:

$\frac{{\left( {{\text{2P}}} \right){\text{V}}}}{{{\text{PV}}}} = \frac{{{\text{RT'}}}}{{{\text{RT}}}}$ …… (4)

Solving for T’,

${\text{T'}} = {\text{2T}}$

Therefore pressure is doubled when temperature becomes twice its initial value.

Learn more:

Which statement is true for Boyle’s law? brainly.com/question/1158880
Calculation of volume of gas: brainly.com/question/3636135

Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Ideal gas equation

Keywords: ideal gas equation, R, T, P, V, 2P, 2T, pressure, volume, universal gas constant, P’, T’, standard conditions.

The volume should be kept in constant condition.
Then we go $PV=nRT P/T = constant P1/T2 =P2/T1 T2=P1 T1 /P2$
and if P2 is equal to 2P1, we have $T2=P1T1/2P1=1/2 T1$
which means that needed temperature is half of the initial temperature

A lever with a mechanical advantage greater then 1 is used to

Answers

A lever with a mechanical advantage greater than 1 is used to lift a larger load.

What is lever ?

A beam or stiff rod is pivoted at a fixed, or fulcrum, to form a simple machine known as a lever. A stiff body that can rotate about a point on itself is called a lever. The three types of levers are categorised according to where the fulcrum, weight, and effort are located.

Mechanical advantage is the relationship between a machine's capacity to lift a load and the effort required to operate it. A machine is said to be a force multiplier if its mechanical advantage is larger than 1.

The effort arm and load arm of the lever are the same length when the mechanical advantage is equal to 1. Levers are employed to obtain an advantage when the mechanical advantage is less than 1.

Thus, A lever with a mechanical advantage greater than 1 is used to lift a larger load.

To learn more about the lever, follow the link;

brainly.com/question/18937757

#SPJ2

Answer:

to increase force

Explanation:

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