All categories

3 years ago

Find the resistance if the current is 1.5 amperes and the voltage is 15-V.

Chemistry

1 answer:

max2010maxim [7]3 years ago

4 0

The resistance = B. 10 Ω

<h3>Further explanation </h3>

Electric current (symbolized by the letter "i) is the amount of charge flowing in the conductor of each unit of time

The international standard unit of electric current is Coulomb/second or Ampere (A).

Electric current is also a ratio between the voltage and the amount of resistance at the conductor.

Can be formulated

$\large{\boxed{\bold{I=\frac{V}{R}}}$

V = Voltage (volts)

R = resistance (ohms)

This formula is also known as Ohm's Law, which states that

<em>the amount of current flowing is directly proportional to the voltage and inversely proportional to the resistance. </em>

The current is 1.5 amperes and the voltage is 15-V, so :

$\tt I=1.5~A\\\\V=15~V$

The resistance :

$\tt R=\dfrac{V}{I}\\\\R=\dfrac{15}{1.5}\\\\R=\boxed{\bold{10~ohm}}$

You might be interested in

Pl hep help help me

ivanzaharov [21]

It is true

I’ve done this before

4 0

3 years ago

Carbon tetrachloride can be produced by the following reaction: Suppose 1.20 mol of and 3.60 mol of were placed in a 1.00-L flas

hjlf

The given question is incomplete. The complete question is :

Carbon tetrachloride can be produced by the following reaction:

$CS_2(g)+3Cl_2(g)\rightleftharpoons S_2Cl_2(g)+CCl_4(g)$

Suppose 1.20 mol $CS_2(g)$ of and 3.60 mol of $Cl_2(g)$ were placed in a 1.00-L flask at an unknown temperature. After equilibrium has been achieved, the mixture contains 0.72 mol of $CCl_4$ . Calculate equilibrium constant at the unknown temperature.

Answer: The equilibrium constant at unknown temperature is 0.36

Explanation:

Moles of $CS_2$ = 1.20 mole

Moles of $Cl_2$ = 3.60 mole

Volume of solution = 1.00 L

Initial concentration of $CS_2$ = $\frac{moles}{volume}=\frac{1.20mol}{1L}=1.20M$

Initial concentration of $Cl_2$ = $\frac{moles}{volume}=\frac{3.60mol}{1L}=3.60M$

The given balanced equilibrium reaction is,

$CS_2(g)+3Cl_2(g)\rightleftharpoons S_2Cl_2(g)+CCl_4(g)$

Initial conc. 1.20 M 3.60 M 0 0

At eqm. conc. (1.20-x) M (3.60-3x) M (x) M (x) M

The expression for equilibrium constant for this reaction will be,

$K_c=\frac{[S_2Cl_2]\times [CCl_4]}{[Cl_2]^3[CS_2]}$

Now put all the given values in this expression, we get :

$K_c=\frac{(x)\times (x)}{(3.60-3x)^3\times (1.20-x)}$

Given :Equilibrium concentration of $CCl_4$ , x = $\frac{moles}{volume}=\frac{0.72mol}{1L}=0.72M$

$K_c=\frac{(0.72)\times (0.72)}{(3.60-3\times 0.72)^3\times (1.20-0.72)}$

$K_c=0.36$

Thus equilibrium constant at unknown temperature is 0.36

4 0

3 years ago

Which of the following has the largest % of sodium, 20g of sodium fluoride, 20g of sodium chloride, or 20g of sodium bromide?

Ksenya-84 [330]

The one whose molar mass is smaller than sodium.

Fluorine is 19 g
Chlorine= 35.5 g
Bromine= 80 g

so in sodium fluoride, the percent of sodium is the largest.

4 0

4 years ago

Composition of matter (compound, mixture, element)

slava [35]

Explanation:

Matter can be classified into two broad categories: pure substances and mixtures. ... A material composed of two or more substances is a mixture. Elements and compounds are both examples of pure substances. A substance that cannot be broken down into chemically simpler components is an elementOne useful way of organizing our understanding of matter is to think of a hierarchy that extends down from the most general and complex to the simplest and most fundamental (Figure 3.4.1 ). Matter can be classified into two broad categories: pure substances and mixtures. A pure substance is a form of matter that has a constant composition (meaning that it is the same everywhere) and properties that are constant throughout the sample (meaning that there is only one set of properties such as melting point, color, boiling point, etc. throughout the matter). A material composed of two or more substances is a mixture. Elements and compounds are both examples of pure substances. A substance that cannot be broken down into chemically simpler components is an element. Aluminum, which is used in soda cans, is an element. A substance that can be broken down into chemically simpler components (because it has more than one element) is a compound. For example, water is a compound composed of the elements hydrogen and oxygen. Today, there are about 118 elements in the known universe. In contrast, scientists have identified tens of millions of different compounds to date.

7 0

3 years ago

Read 2 more answers

There are two different isotopes of bromine atoms. Under normal conditions, elemental bromine consists of Br2 molecules, and the

Anon25 [30]

Your answer would be A and D love!

3 0

3 years ago