3 years ago

Waves in a lake are 5.00m in length and pass an anchored boat 1.25 s apart. the speed of the waves is:

Chemistry

1 answer:

DENIUS [597]3 years ago

6 0

Answer:

b. 4.00 m/s

Explanation:

divide the waves by the time

5÷1.25=4

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Negative charge is the answer

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3 years ago

If 24 g rams of ozone, 03, was collected how many moles were collected?

dexar [7]

Hey there!

Molar mass of O3 = 47.9982 g/mol

therefore:

1 mole O₃ --------------------- 47.9982 g

moles O₃ ---------------------- 24 g

moles O₃ = 24 x 1 / 47.9982

moles O₃ = 24 / 47.9982

moles O₃ = 0.500 moles

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3 years ago

Geologists use the decay of potassium-40 in volcanic rocks to determine their age. Potassium-40 has a half-life of 1.26 109 year

melomori [17]

Answer:

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$m(t) = m_{o}\cdot e^{-\frac{t}{\tau} }$

Time constant can be calculed in terms of half-life:

$\tau = \frac{t_{1/2}}{\ln 2}$

$\tau = \frac{1.26\times 10^{9}\,yr}{\ln 2}$

$\tau = 1.818\times 10^{9}\,yr$

The initial mass is:

$m_{o} = \frac{2.73\times 10^{-7}\,g}{e^{-\frac{3.15\times 10^{8}\,yr}{1.818\times 10^{9}\,yr} }}$

$m_{o} \approx 3.247\times 10^{-7}\,g$

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3 years ago

a sample of gas at fixed pressure has a temperature of 300 k and a volume of 3 L, calculate the volume if the gas is heated to 7

finlep [7]

Answer:

Explanation:

using charles law

V1/T1 = V1/T1

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4 years ago

What are the answers?

IrinaK [193]

For Number 2 It Is The Law Of Conversation Of Mass

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Number 7 Oxygen

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3 years ago