Which best defines partial pressure in a mixture of gases?

o

pressure that is exerted by all the gases of a mixture on the container

pressure that is exerted by one gas as if it occupied a container by itself

half of the pressure that is exerted by the gases of a mixture on the container

sum of the individual pressures that are exerted by two or more gases

Width = 34 cm

Length = 81 cm

Step-by-step explanation:

Let length be l and width be w

Let perimeter be p or p = 2(l+w)

The length of the rectangular box is 21 centimeters less than triple the width:

This means

l = 3w - 21

Also, perimeter is 230, so

2(l+w) = 230

or

l+w = 115

Putting equation 1 in this equation, we get:

l+w=115

(3w - 21)+w=115

Solving:

(3w - 21)+w=115\\4w=136\\w=34

To find length:

l = 3w - 21

l = 3(34) - 21

l = 81

Hence

Width = 34 cm

Length = 81 cm

Step-by-step explanation:

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.