3 years ago

I NEED HELPPPPPP ASAPPPPPPPPPPPP

Chemistry

1 answer:

Mama L [17]3 years ago

7 0

I can’t read ? This what does it say

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You measure an unknown substance with litmus paper and determine it to be a strong acid.

jok3333 [9.3K]

Answer:

The answer is C.

Explanation:

because measuring the pH of a substance is a chemical property. The substance must react with the litmus paper to determine its adcidity

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Which pair of elements are the most similar? A. Ca and F B. Na and Cl C. Ne and Ar D. K and Ca

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For the reaction below, Kp = 1.59 at 100°C. If 1.0 g of SrCO3 is placed in an empty 5.00 L reactor and allowed to reach equilibr

Sergio [31]

Answer:

$p_{CO_2}^{eq}=1.59atm$

Explanation:

Hello, in this case, one could consider the undergoing chemical reaction as:

$SrCO_3(s)\rightleftharpoons SrO(s)+CO_2(g)$

Thus, since 1.0 g of strontium carbonate is placed, the equilibrium equation takes the following form, excluding the solid-stated species and considering just the carbon dioxide as it is gaseous:

$Kp=p_{CO_2}^{eq}=1.59atm$

Hence, since at the beginning there is no carbon dioxide, its pressure at equilibrium equals Kp:

$Kp=p_{CO_2}^{eq}=1.59atm$

Which was clearly defined above.

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3 years ago

What was the major shortcoming of Rutherford's research of the atom?

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3 years ago

At what pressure would 11.1 moles of a gas occupy 44.8 L at 300 K?

faltersainse [42]

Answer:

$P=6.10atm$

Explanation:

Hello,

In this case, we can study the ideal gas equation that relates temperature, volume, pressure and moles as shown below:

$PV=nRT$

Thus, since we are asked to compute the pressure y simply solve for it as follows:

$P=\frac{nRT}{V}=\frac{11.1mol*0.082\frac{atm*L}{mol*K}*300K}{44.8L}\\ \\P=6.10atm$

Best regards.

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3 years ago