Problem 1: Conditions for an experimental chemistry reaction require a temperature of 298 K. The temperature in the lab is 55°F. Which of the following must you do to meet the requirements? (°F= 9/5 (K - 273) + 32) A. increase the room temperature by 22°F
B. decrease the room temperature by 12°C
C. decrease the room temperature by 33°F
D. increase the room temperature by 18 K 2. Jim, Jane, Ann, and Bill measure an object’s length, density, mass, and volume, respectively. Which student’s measurement might be in liters?

A. Bill’s

B. Jim’s

C. Jane’s

D. Ann’s

Answers

Answer 1

Answer: The correct answer for question 1 is B. To arrive at this answer, use the equation given to convert 55F temperature to Kelvin. The answer will be 285.9K. If you subtract 285 from 298 the answer will be 12. The correct answer for question 2 is A. This is because the unit of volume is liter.

Answer 2

Answer:

1) Since 1°F= 9/5 (K - 273) + 32) after the calculus we find 1°F = 255.9 K

The answer is A. increase the room temperature by 22°F, because 55° F + 22° F = 77° and 77° F = 298.1K,

2) The answer is A: Bill’s. Bill has measured the object’s volume, and the unit of volume is the liter

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122213434234=13341612356=??

A horses body temperature T, is considered to be normal if it is within at least 0.9 degrees Fahrenheit of 99.9 degrees Fahrenheit. Find the range of normal body temperatures for a horse

Answers

99.9+0.9=100.8 degrees fahrenheit
99.9-0.9+99 degrees fahrenheit

The temperature can be between 99 and 100.8 degrees Fahrenheit.
100.8-99=1.8degrees (range)

99≤T≥100.8

Which ratio is equivalent to 4 to 5?

Answers

Answer: 8 to 10, 16 to 25, 40 to 50

Step-by-step explanation: If you have trouble wit this in the future just multiply each number by 2,3,4,5,6...

Answer:

Two are actually equivalent, 8:10and 12:15

Which two triangles are congruent by the ASA Theorem? Complete the congruence

statement

Answers

It would sure help a lot if I could take a peek at the drawings of the triangles.

in ASA theorem in the triangles angle followed by side followed by angle should be equal then we say the 2 triangles are congruent by ASA theorem.

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Answers

Angle 3 is 128, since they’re vertical angles. Angles 2 & 4 are 52, as 180 minus 128 is 52, and both 2 & 4 are also their own vertical angles.

So,

1 = 128
2 = 52
3 = 128
4 = 52

An order of 12 dozen rollerball pens and 5 dozen ballpoint pens cost $116. A later order 8 dozen rollerball pens and 12 dozen ballpoint pens cost $112. What was the cost of 1 dozen of pens?And how much does 1 dozen pencils cost?

Answers

r=cost per dozen rollerball pens
b=cost per dozen ballpoint pens
p=cost per dozen pencils
???

ignore pencils

12r+5b=116
8r+12b=112

eliminate
simplify last equation by dividing by 4
2r+3b=28

eliminate r's
multiply 2r+3b=28 by -6 and add to top equation

-12r-18b=-168
12r+5b=116 +
0r-13b=-52

-13b=-52
divide both sides by -13
b=4

plug back in
2r+3b=28
2r+3(4)=28
2r+12=28
minus 12
2r=16
divide by 2
r=8

ballpoint=pencils

1dozen pencils=$4
1dozen rollerbladepens=$8

You and your friends pick up seven movies to watch over a holiday. You have time to watch only two. In how many ways can you select the two to watch?

Answers

Answer:

There are 21 ways to select the two movies to watch.

Step-by-step explanation:

In mathematics, the procedure to select k items from n distinct items, without replacement, is known as combinations.

The formula to compute the combinations of k items from n is given by the formula:

${n\choose k}=(n!)/(k!(n-k)!)$

It is provided that there are n = 7 movies to watch.

But we only have time for k = 2.

Compute the total number of ways in which we can select 2 movies from 7 as follows:

${7\choose 2}=(7!)/(2!(7-2)!)$

$=(7!)/(2!* 5!)\n\n=(7* 6* 5!)/(2!* 5!)\n\n=(7*6)/(2* 1)\n\n=21$

Thus, there are 21 ways to select the two movies to watch.

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The numbers of bees that visit a plant is 500 times the number of years the plant is alive, where t represents the number of years the plant is alive . what does the expression 500t represent

Find the product. a^4(3a ^2 - 2a + 1)

PLEASE HURRY 3/14 < x < 3/130.2030.2130.2230.233

Wendy saved up for a family trip to the beach. For each $1 she saved, her parents pledged to save $5. If her parents were able to save $2, how much did Wendy save?