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Goshia [24]
3 years ago
12

How many moles are in 30.0g of N2

Mathematics
2 answers:
vazorg [7]3 years ago
4 0

Answer:1.0709

Step-by-step explanation:

solmaris [256]3 years ago
4 0

Answer:

1

Step-by-step explanation:

To be very accurate 1.1

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Bella and Heather put some money into their money boxes every week. The amount of money (y), in dollars, in their money boxes af
Hatshy [7]

Answer:

\boxed{ \text{B. 10 weeks, \$310 }}\\

Step-by-step explanation:

We have two conditions:

\begin{array}{lrcll}(1) & y & = & 25x + 60 & \\(2) & y & = & 30x + 10 & \\ & 25x + 60 & = & 30 x + 10 & \text {Set (1) = (2)} \\ & 50 & = & 5x & \text{Subtracted 25x from each side} \\& x & = & 10 &\text{Divided each side by 5} \\\end{array}\\$ $\\\boxed{ \textbf{The number of weeks is }x = 10}\\

   

    Bella: y = 25x + 60 = 25(10) + 60 = 250 + 60 = 310  

Heather: y = 30x + 10  = 30(10) +  10 = 300 + 10  = 310

7 0
3 years ago
Which subtraction expression does the number line model show ​
loris [4]

Answer:

13-+4

Step-by-step explanation:

3 0
3 years ago
Compared to its 'parent' function f(x)=x^2, describe the changes if f(x)=-x^2-3
Morgarella [4.7K]

Answer:

It is inverted and shifted down 3 units.

Red is f(x) = x^2

Purple is f(x) = -x^2 -3

Step-by-step explanation:

5 0
3 years ago
What is the perimeter of the triangle shown on the coordinate plane, to the nearest tenth of a unit?
Karo-lina-s [1.5K]

Let us find the co ordinates of each vertex of the triangle .

Vertex A ( in firs second quadrant) = ( -5 ,3)

vertex B in third quadrant = ( -5, -5)

vertex C in fourth quadrant = ( 4, -2)

let us use distance formula AB^2 = ( -5 - 3)^2 + (-5 - -5 )^2 = 64 + 0

AB= 8

BC^2 = ( -2 - -5 )^2 + ( 4 - - 5)^2 = 9 + 81 = 90

BC = 9.48

AC^2 = ( -2 -3)^2 +( 4- -5)^2 = 25 + 81 = 106

AC= 10.29

Perimeter = sum of length of AB+ BC+ Ac = 8 + 10.29 + 9.48= 22.77

8 0
3 years ago
HEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEELP!!!!!!!!!
DerKrebs [107]
I would say c, 600 inches. Because I subtracted 621-28 and got about 600. Because they are looking for the value of what was left for the 19 Years. And you could then fully eliminate D because it can’t be more that 621 because that’s how much rainfall they got in 20 years. And so since you know that one of the years is 28 inches of rainfall, you could then subtract to get how many inches of rainfall for the rest of the 19 years
5 0
3 years ago
Read 2 more answers
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