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LuckyWell [14K]
3 years ago
7

165. How many moles of sodium will react with water to

Mathematics
2 answers:
Anna11 [10]3 years ago
7 0

mol Na (s) = (4.0 mol H2 (g) ) * ( 2 mol Na (s) / 1 mol H2 (g) ) = 8.0 mol Na (s)

Fiesta28 [93]3 years ago
4 0

Answer:

Explanation:

Hello,

In this case, based on the given rewritten reaction:

The stoichiometry leads to the following theoretical moles of oxygen:

As sodium and hydrogen as a 2 to 1 molar relationship.

Step-by-step explanation:

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sergejj [24]

Answer:

D. There are points on the graph with the same x-coordinate but different y-coordinate.

Step-by-step explanation:

A relation is a function if and only if each element of the range, corresponding with y-axis, is associated with only one element of the domain, corresponding with x-axis. In this case, the graphed relation is not a function, since for all element of the domain, except 0, are related to two distinct elements of the range.

Hence, correct answer is D.

6 0
2 years ago
LaShaundra is buying fence for two triangular sections of her garden.
mixas84 [53]

Answer: 80 feet.


Step-by-step explanation:

1. As you can see in the figure, triangle ABC and the triangle DFG are similar.

2. The scale of factor of triangle ABC to triangle DFG is the following:

sf=\frac{20ft}{4ft}\\sf=5ft

3. Therefore, the lenght of the side DG of the trinagle DFG is:

DG=5*AC\\DG=5*7ft\\DG=35ft

4. The perimeter of the triangle DFG is:

P_{DFG}=20ft+25ft+35ft=80ft

5. Therefore, she would need 80 feet of fence.


8 0
3 years ago
The Polygons below are similar. Find the value of z. <br><br> A. 4.5<br> B. 7.5<br> C. 12<br> D. 16
Misha Larkins [42]
The correct answer is B. 7.5
Similar polygons are polygons wherein its corresponding sides are proportional. All corresponding sides of the larger polygon are proportional to the corresponding sides to the smaller polygon, wherein segment HG is proportional to segment DC, and segment FG is proportional to segment BC. (See attachment for reference) A <span>proportion  is an equation that states two ratios are equivalent. By cross multiplying the two ratios, you get an equation for finding the value of z, which is 7.5</span>

8 0
3 years ago
PLEASE SOLVE CORRECTLY!!! I HAVE CHECKED THE ANSWER AND IT SAYS $64.67 BUT I DON'T KNOW THE PROCESS TO GET THAT ANSWER!!! HELP!!
Sphinxa [80]

Answer:

see below

Step-by-step explanation:

First determine how much is subtracted from the account

12.57+24.95+36.86 =74.38

They charge .15 per check=3*.15 = .45

Subtract the amounts of the checks and the check fees

139.50-74.38-.45 =64.67

7 0
3 years ago
Read 2 more answers
A basketball team scored 38, 52, 43, 54, 41 and 36 pointsin their first six matches. a. find the mean number b.what score does t
BaLLatris [955]

Answer:

a is 44 b is 37

Step-by-step explanation:

5 0
3 years ago
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