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BARSIC [14]
3 years ago
8

The length of a spring when it's at rest is measured to be 0.56 centimeter. How many significant figures are there in this measu

rement?
Chemistry
1 answer:
lukranit [14]3 years ago
8 0
Two. The zero before the decimal is insignificant
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12.5g, each 10 years you lose a half of what you have at that given moment

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3 years ago
Given 6193 mL of a gas at 62.3 °C. What is its volume at 38.1 °C?
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Answer:

5746.0 mL.

Explanation:

We can use the general law of ideal gas:<em> PV = nRT.</em>

where, P is the pressure of the gas in atm.

V is the volume of the gas in L.

n is the no. of moles of the gas in mol.

R is the general gas constant,

T is the temperature of the gas in K.

If n and P are constant, and have two different values of V and T:

<em>V₁T₂ = V₂T₁</em>

<em></em>

V₁ = 6193.0 mL, T₁ = 62.3°C + 273 = 335.3 K.

V₂ = ??? mL, T₂ = 38.1°C + 273 = 311.1 K.

<em>∴ V₂ = V₁T₂/T₁ </em>= (6193.0 mL)(311.1 K)/(335.3 K) = <em>5746.0 mL.</em>

5 0
3 years ago
which combination of temperature and pressure correctly describes standard temperature and pressure, STP? A) 0 degrees C and 101
ASHA 777 [7]

Answer: A


0 degrees and 101 kPa are the conditions that describe the standard temperature and pressure. When expressed in K, the standard temperature 0 degrees equals 273.5 K. Also the standard pressure 101 kPa equals 760 mmHg or 1 Atm.

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Explanation:

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