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beks73 [17]
3 years ago
15

An unknown compound has the following chemical formula:

Mathematics
1 answer:
Andru [333]3 years ago
8 0
We are given with 7.5 moles of oxygen and 7.43 moles of nitrogen.To identify the chemical formula of the compound, we divide each numner by the smaller amount between the two. Hence, oxygen is approx. equal to 1 and nitrogen is equal to 1. Hence teh formula is NO or nitric oxide.
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Help plz,BIG POINTS,also plz show me the steps as best as possible
Sidana [21]

Answer:

The correct answer is option 3.

Step-by-step explanation:

Given : ΔPQR, QM is altitude of the triangle

PM  = 8

MR = 18

To find = QM

Solution :

PR = 8 + 18  = 26

Let, PQ = x  , QR = y, QM = z

Applying Pythagoras Theorem in ΔPQR

PQ^2+QR^2=PR^2

x^2+y^2=(26)^2..[1]

Applying Pythagoras Theorem in ΔPQM

PM^2+QM^2=PQ^2

8^2+z^2=(x)^2..[2]

Applying Pythagoras Theorem in ΔQMR

MR^2+QM^2=QR^2

18^2+z^2=(y)^2..[3]

Putting values of x^2 and y^2 from [2] and [3 in [1].

8^2+z^2+18^2+z^2=(26)^2

2z^2=(26)^2-(8)^2-(18)^2

2z^2=288

z^2=144

z = ±12

z = 12 = QM ( ignoring negative value)

The length of QM is 12.

6 0
3 years ago
Someone please help me asap !!!!
Naily [24]
1 pint = 2 cups = 2(8 fluid ounces) = 16 fluid ounces= 16(2 tablespoons)= 32 table spoons.

so, 5 pints= 5*32 tablespoons = 160 tablespoons
7 0
3 years ago
How many cubic feet of water are in the pool?
galben [10]

Answer:

It depends on the size of the

Step-by-step explanation:

Like the width ,length and all that

give me the size of the pool and will assist

8 0
3 years ago
Read 2 more answers
Given the graph below, write the piecewise function.<br><br> How do I solve?
MaRussiya [10]

Answer:

for x < 0    x^2 - 2

for x \geq 0   2x + 1

Step-by-step explanation:

4 0
3 years ago
<img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B%20-%20%20%5Cfrac%7B7%7D%7B216%7D%20%7D%20%5Ctimes%20%20%5Csqrt%7B42%7D%20%20" id
Natalija [7]

Answer:

IM GOING TO THIS but what do I gotta do evaluate? simplify?

6 0
3 years ago
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