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kow [346]
3 years ago
5

Read the passage. Look at the underlined section marked number 9. There may be a mistake in the way the sentence is written. If

you find a mistake, choose the answer that corrects the mistake. If there is no mistake, choose ‘Correct as is.’ A) Correct as is. B) Only the ones who were known to be experts with the needle were invited for an afternoon of quilting, or all others came later for an evening of fun and dancing. C) Only the ones who were known to be experts with the needle were invited for an afternoon of quilting, for all others came later for an evening of fun and dancing. D) Only the ones who were known to be experts with the needle were invited for an afternoon of quilting, and all others came later for an evening of fun and dancing.
Chemistry
2 answers:
ludmilkaskok [199]3 years ago
8 0

Answer:

D

Explanation:

I just got it right on Usatestprep.

Alexus [3.1K]3 years ago
5 0

The answer is D just did it

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Which of the following is NOT a subatomic particle?<br> Proton, Electron, Isotope or Neutron?
Free_Kalibri [48]
An isotope is the name for a type of an atom (depends on how many neutrons the atom has), so an isotope is not a subatomic particle
7 0
3 years ago
the particles that make up a rock are constantly moving. however, a rock does not visibly vibrate. why is this?
kipiarov [429]
Only the particles inside the rock/solid are moving, not the actual rock. 
5 0
3 years ago
Read 2 more answers
Given the standard enthalpy changes for the following two reactions:
lawyer [7]

Answer:

ΔH° = -186.2 kJ

Explanation:

Hello,

This case in which the Hess method is applied to compute the required chemical reaction. Thus, we should arrange the given first two reactions as:

(1) it is changed as:

SnCl2(s) --> Sn(s) + Cl2(g)...... ΔH° = 325.1 kJ

That is why the enthalpy of reaction sign is inverted.

(2) remains the same:

Sn(s) + 2Cl2(g) --> SnCl4(l)......ΔH° = -511.3 kJ

Therefore, by adding them, we obtain the requested chemical reaction:

(3) SnCl2(s) + Cl2(g) --> SnCl4(l)

For which the enthalpy change is:

ΔH° = 325.1 kJ - 511.3 kJ

ΔH° = -186.2 kJ

Best regards.

7 0
3 years ago
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If the pressure exerted by a gas at 100 Celsius in a volume of 0.044 L is 3.81 atm, how many maples of gas are present
Vera_Pavlovna [14]

The number of moles of gas present are 0.0054

<u>Explanation:</u>

Given-

Temperature, T = 100°C = 100 + 273 = 373K

Volume, V = 0.044L

Pressure, P = 3.81 atm

Moles of gas, n = ?

We know,

PV = nRT

R = 0.082 L.atm.K⁻¹.mol⁻¹

n = PV/RT

n = (3.81)(0.044)/(0.082)(373)

n = 0.0054 moles

Therefore, number of moles of gas present are 0.0054

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3 years ago
Someone help me please. It's due in 30 mins
max2010maxim [7]

Answer: permanent removal of hair by energy or heat

Explanation:

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