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vredina [299]
3 years ago
15

A chemical reaction is endothermic if it absorbs heat from its surroundings. It is exothermic if it gives off heat to its surrou

ndings. In her chemistry class, Lily is given a salt (ammonium nitrate) and a beaker of water at 60 ∘F. She dissolves the salt in the water and sees that the temperature of the solution is now 50 ∘F. Did the temperature of the solution go up or go down? By how many degrees? What kind of reaction has occurred?
Mathematics
1 answer:
Crazy boy [7]3 years ago
4 0

The temperature went down by 10 degrees F. An exothermic reaction happened because the temperature went down so heat was released.

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Imma keep on saying this I understand some of it but not all againnnn I’m sorryyy
Mariulka [41]

Answer:

6) The answer is 210p - 105

7) The answer is  -124q + 216

Step-by-step explanation:

1. Always Distributive Property first

6) -14 (8 - 15p)           7) -12 ( -18 + 10q)

    -112 +210p                 216 -120q

2. Combine like terms

6) -112  +  7  = -105   your full answer is 210p -105

7) -120q +   -4q  =  -124q  Your full answer is -124q +216.

Hope this helps.

6 0
3 years ago
find two numbers that round to 15.5 when rounded to the nearest tenth. besides 15.04 15.55 15.508 15.445 15.0 15.49
Kitty [74]
Two other numbers are 15.48 and 15.52
4 0
3 years ago
80Divided by 3 plz help
mojhsa [17]

Answer:

Your answer is 26.667

hope this helps

8 0
3 years ago
the measures of an exterior angle and the adjacent interior angle add p to 360 because they form a linear plane?
inn [45]
Sadly, I can't see the picture you're looking at as you make that statement.
But I'm pretty sure that when you combine an exterior angle with the interior
angle adjacent to it, you'll wind up with 180°, because they form a linear line.
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6 0
3 years ago
A train traveled 63.75 miles at a rate of 85 miles per hour. Which equation can be used to find h, the number of hours it took t
sashaice [31]

Answer:  63.75 = 85h

Solving gives 0.75 hours.

Step-by-step explanation:

we now that speed = distance / time

therefore time will be Distance / speed

Given that distance = 63.75miles

Speed= 6=85miles per hour

Time(h) = 63.75miles/ 85.---- equation 1

But from the options given, the equation that can also  be used to find number of hours is

63.75 = 85h

such that making h subject of formula  still give us

h= 63.75/85  as in equation 1 above

solving gives that Time ( h) = 0.75 hours .

8 0
2 years ago
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