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3 years ago

Most plastics don't biodegrade

Chemistry

1 answer:

hammer [34]3 years ago

6 0

That is false because every type of plastic can biodegrade

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13. What is the frequency of a wave that has a wavelength of 2.73 x 10-7m?

ella [17]

Answer:

f = 1.09 × 10¹⁵ Hz

Explanation:

Given data:

Frequency of wave = ?

Wavelength of wave = 2.73 ×10⁻⁷ m

Solution:

Formula:

Speed of light = frequency × wavelength

speed of light = 3× 10⁸ m/s

by putting values,

3× 10⁸ m/s = f × 2.73 ×10⁻⁷ m

f = 3× 10⁸ m/s / 2.73 ×10⁻⁷ m

f = 1.09 × 10¹⁵s⁻¹

s⁻¹ = Hz

f = 1.09 × 10¹⁵ Hz

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3 years ago

Periodic law states that when the elements are arranged according to their atomic numbers, this allows elements with similar pro

jeyben [28]

Answer:

is a mutiply choice answer just to be specific

Explanation:

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3 years ago

Which of the following represents the atoms of 2 different elements?

Marrrta [24]

Answer:

Explanation:

7 0

3 years ago

If Zn and H2SO4 undergo a single-displacement reaction, what is the balanced equation?

ankoles [38]

Answer:Zn(s) + H2SO4(aq) → ZnSO4(aq) + H2(g)

O2Zn(s) + H2SO4(aq) → 22nH(aq) + SO4(s)

Explanation:

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3 years ago

Boyles Law P1V1 = P2V2

arsen [322]

Answer:

A. The balloons will increase to twice their original volume.

Explanation:

Boyle's law states that the pressure exerted on a gas is inversely proportional to the volume occupied by the gas at constant temperature. That is:

P ∝ 1/V

P = k/V

PV = k (constant)

P = pressure, V = volume.

$P_1V_1=P_2V_2$

Let the initial pressure of the balloon be P, i.e. $P_1=P$ , initial volume be V, i.e. $V_1=V$ . The pressure is then halved, i.e. $P_2=\frac{P}{2}$

$P_1V_1=P_2V_2\\\\P*V=\frac{P}{2} *V_2\\\\V_2=\frac{2*P*V}{P}\\\\V_2=2V$

Therefore the balloon volume will increase to twice their original volume.

3 0

3 years ago