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Murljashka [212]
3 years ago
7

What is the number of grams in 1.25x10^25 molecules of aluminum oxide

Mathematics
1 answer:
aalyn [17]3 years ago
7 0

Answer:

Mass = no. of molecules / 6.023 * 10^ 23 * Molar mass

Step-by-step explanation:

Molar mass of CO2 = 44g/mol

1.5

⋅

10

25

6.023

⋅

10

23

= 51.5 moles of CO2

51.5

⋅

44g/mol

=

2266 grams

Hope this helped

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Is the solution of b x 5/6 = 25 greater than or less than 25
azamat

Answer:

Greater. (30)

Step-by-step explanation:

Simplest way to find out is divide.

Flip 5/6 and multiply.

25 x 6 = 150

150 / 5 = 30

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3 years ago
A picture frame can hold a photograph that is 16 inches long and 12 inches wide. What is the area of the photo that fits the fra
yulyashka [42]

Answer: The area of the photo that fits the frame is 192 square inches.

Step-by-step explanation:

Hi, to answer this question we have to apply the next formula:

Area of a rectangle (A) = Length x width

Replacing with the values given and solving for A (area):

A = 16 x 12 = 192 in2

The area of the photo that fits the frame is 192 square inches.

Feel free to ask for more if needed or if you did not understand something.

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3 years ago
Which of these numbers is four less than a square number?<br>A 3<br>B 20<br>C 37<br>D 45​
gregori [183]

Answer:

D

Step-by-step explanation:

You first add 4 to all of the numbers giving you 7, 24, 41, and 49. Only choice D is a perfect square. for reference, 7*7=49

4 0
3 years ago
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In a bowl of fruit there are 10 bananas, 6 apples and 4 pears.
kobusy [5.1K]

Answer:

P(0,0) = 2/12 times 1/11 = 1/66

Step-by-step explanation:

For probability questions, think of each event happening separately, it makes the maths easier to understand. For example, in this question, do not think of the two boys taking a fruit at the same time - that makes the maths complicated

.

Let Daniel take a fruit first, then Sean can take a fruit. There are two parts to consider.

P

r

o

b

a

b

i

l

i

t

y

=

number of desirable outcomes

total number of possible outcomes

For Daniel: there are 12 different pieces of fruit in the bowl, he just takes one without choosing a specific fruit. (random)

The chance that Daniel takes an orange is

2

12

Of the 12 pieces of fruit. 2 are oranges.

Now Sean: the numbers of fruit in the bowl have changed. There are now only 11 pieces of fruit in the bowl, and only 1 is an orange.

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4 0
3 years ago
Someone please help me ASAP
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Answer:

-4, -3, -2, -1, 0, and 1

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3 years ago
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