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VMariaS [17]
3 years ago
11

Help!! I need help on these! Please show all work! Will give extra points!

Chemistry
1 answer:
alukav5142 [94]3 years ago
7 0

Answer:

20 times 10 to the third is 77 and a half

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A pump contains 1.5 L of air at 175 kPa. You draw back on the piston of the pump, expanding the volume until the pressure reads
Tresset [83]

Answer:

\large \boxed{\text{86.8 L}}

Explanation:

The temperature and amount of gas are constant, so we can use Boyle’s Law.

p_{1}V_{1} = p_{2}V_{2}

Data:

\begin{array}{rclrcl}p_{1}& =& \text{0.579 atm}\qquad & V_{1} &= & \text{150 L} \\p_{2}& =& \text{1.00 atm}\qquad & V_{2} &= & ?\\\end{array}

Calculations:  

\begin{array}{rcl}0.579 \times 150 & =& 1.00V_{2}\\86.85 & = & 1.00V_{2}\\V_{2} & = &\dfrac{86.85}{1.00}\\\\& = &\textbf{86.8}\\\end{array}\\\text{The new volume of the gas is } \large \boxed{\textbf{86.8 L}}

6 0
3 years ago
Silicones are ________. Select one: A. flat sheets of silicon and hydrogen atoms B. flat sheets of silicon atoms C. chains of al
Anna007 [38]

Answer:

C. chains of alternating silicon and oxygen atoms with attached organic groups

Explanation:

It contains Silicone-Oxygen backbone as found in Silicone Dioxide (silica) but it also has organic groups attached to this backbone with Carbon-Silicone attachments. This whole arrangement of Silicone, Oxygen and Attached organic groups make up Silicones.

3 0
3 years ago
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Which planet has the longest year and why ?
Romashka [77]
The planet with the longest year is neptune because it is the furthest away from the sun
8 0
3 years ago
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An auomobile can travel 40.0 miles on one gallon of gasoline.how many kilometers per liter is this?(1.61 km= 1 mi; 1L=0.246 gal)
Karo-lina-s [1.5K]
40 mi/gal * 1.61 km/mi * 0.264 gal/li 

40*1.61*0.264 

17 km/li 
7 0
2 years ago
A renowned laboratory reports quadruple-point coordinates of 10.2 Mbar and 24.1°C for four-phase equilibrium of allotropic solid
Inessa [10]

Answer:

The claim is untrue.  

Explanation:

Given the information from the question. We need to evaluate the claim.

According to the phase rule we have F= C-P+2

In this particular situation, the forms are completely allotropic .In order words, they are conjured through the same chemical composition. Thus constituents C= 1, P=4 for four phases and the number variables is 2. As a result, F= C-P+2 =1-4+2= -1. Therefore, the claim is untrue.  

8 0
3 years ago
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