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3 years ago

Do moving electrons have a magnetic field?

1 answer:

5 0

Now, a current carrying wire is essentially a series of charge carriers (electrons) , all moving through the wire. ... Since each charge has its own electric field, a moving charge generates a magnetic field. The fields from all these little charges are added up, and we get a final, finite, magnetic field.

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A sample of gas with a mass of 21.3 g is confined to a vessel of volume 7.73 L at 0.880 atm and 30.00C.

rodikova [14]

Answer:

(a) 77.9 g/mol

(b) 3.18 g / L

Explanation:

(a) We need to use the ideal gas law, which states: PV = nRT, where P is the pressure, V is the volume, n is the moles, R is the gas constant, and T is the temperature in Kelvins.

Notice that we don't have moles; we instead have the mass. Remember, though that moles can be written as m/M, where m is the mass and M is the molar mass. So, we can replace n in the equation with m/M, or 21.3/M. The components we now have are:

- P: 0.880 atm

- V: 7.73 Litres

- n: m/M = 21.3 g / M

- R: 0.08206

- T: 30.00°C + 273 = 303 K

Plug these in:

PV = nRT

(0.880)(7.73) = (21.3/M)(0.08206)(303)

Solve for M:

M = 77.9 g/mol

(b) The equation for the molar mass is actually:

M = (dRT)/P, where d is the density

We have all the components except d, so plug them in:

77.9 = (d * 0.08206 * 298) / 1

Solve for d:

d = 3.18 g / L

3 0

3 years ago

Read 2 more answers

Abnormal cell division causes which health problem

Romashka-Z-Leto [24]

Chromosomes abnormalities often happen due to one or more of these:
Errors during of sex cells (meiosis)
Errors during of other cells(mitosis)
Substances that causes birth defects (teratogens)

3 0

3 years ago

Find the empirical formula of the compound ribose, a simple sugar often used as a nutritional supplement. A 14.229 g sample of r

MakcuM [25]

Answer:

CH2O

Explanation:

Firstly, we need to convert the masses of the elements to percentage compositions. This can be done by placing the mass of each element over the total mass multiplied by 100% . We can start with carbon.

C = 5.692/14.229 * 100 = 40%

O = 7.582/14.229 * 100 = 53.29%

H = 0.955/14.229 * 100 = 6.71%

We then proceed to divide each percentage composition by their atomic mass of 12, 16 and 1 respectively.

C = 40/12 = 3.333

O = 53.29/16 = 3.33

H = 6.71/2 = 6.71

Dividing by the smaller value which is 3.33

C = 3.33/3.33 = 1

O = 3.33/3.33= 1

H = 6.71/3.33 = 2

The empirical formula of the compound ribose is CH2O

6 0

4 years ago

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What is the ionic charge for C, Si, Ge, Sn and Pb?

Alecsey [184]

An atom of carbon has 4 electrons in its outermost shell, which means that
its ionic charge is 4+ or 4-
Si is in same group as carbon so its also 4+ or 4-
Germanium is 4+.
Sn is also 2+ or 4+
Pb is usually +2

6 0

3 years ago

1 According to the kinetic-molecular theory, what happens to a liquid when it is transferred from one container to another?

devlian [24]

Answer 1 : The correct option is C.

Explanation :

The property of liquid is, they have fixed volume but do not have fixed shape. when a liquid is transferred from one container to another then the volume remains the same, but the shape changes according to the shape of the container.

Answer 2 : The correct option is A.

Explanation :

pH : It is defined as the negative logarithm of the hydronium ion concentration.

The expression of pH is,

$pH=-log[H_3O^+]$

3 0

4 years ago

Read 2 more answers