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3 years ago

10

How does litmus indicator work

1 answer:

makkiz [27]3 years ago

6 0

Answer:

The substance which responds to the change in the concentration of the hydronium ions in solution by changing its color is known as an indicator.

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Explain how a seismometer works

Radda [10]

<span>will record an earthquake by a plotting vibrations versus time.
can determine the time of arrival of the first P-wave and the time of arrival of the first S-wave.</span>

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3 years ago

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What is the right answer for this. I really need help

statuscvo [17]

<span>así que te está diciendo que</span>

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4 years ago

A student measured the gram weight of a

e-lub [12.9K]

Answer: 0.428%

Explanation: % Error = [(measured - Actual)/Actual]*100%

(93.9g - 93.5 g)/93.5g = 0.428%

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3 years ago

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Faunal succession and fossil correlation relate to the principle of superposition because there are fossils of certain organisms

yaroslaw [1]

Answer:

Alright love the answer would be true

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3 years ago

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Which expression can be used to calculate the density of an ideal gas?

Ber [7]

Answer:

Correct answer is PM ÷ RT

Explanation:

Ideal gas equation, $$PV=nRT$\\$ .........(1)

Where,

P = Pressure of the gas

V = Volume occupied by the gas

n = Number of moles of gas = $=\frac{Mass}{Molecular mass}$

R = Universal gas content

T= Temperature

$\therefore PV=\frac{m}{M} RT$[tex]$P=\frac{m}{V} \frac{RT}{M}$

$\Rightarrow P=d\frac{RT}{M}$ $($\because Density, d=\frac{m}{V}$)$

$\therefore d=\frac{PM}{RT}$

6 0

3 years ago