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Elena L [17]
3 years ago
9

Students are each given a 20 gram sample of an unknown solid compound in a clear plastic bag. They are instructed to break the m

aterial into smaller parts by gently hitting it with a hammer. Some of the parts break into large chunks and some look like a fine powder. Which statement correctly describes these broken pieces of the sample?
The pieces of fine powder are individual atoms

The larger pieces are still compounds and the smaller pieces are elements.

Each piece contains the same number of atoms.

Each piece contains the same proportion of different elements.
Mathematics
2 answers:
Kaylis [27]3 years ago
6 0
"Each piece contains the same number of atoms" is the one statement among the following choices given in the question that correctly describes these broken pieces of the sample. The correct option among all the options that are given in the question is the penultimate option or the third option. I hope it helps you.
gladu [14]3 years ago
6 0

Answer:

Each piece contains the same number of atoms.

Step-by-step explanation:____

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Which expressions are equivalent to (4⋅a)⋅2 ?
shusha [124]

Answer:

4⋅(a⋅2)  

2⋅(4⋅a)

8a

Step-by-step explanation:

(4⋅a)⋅2


4⋅(a⋅2)  This is the same by the  associative property of multiplication


2⋅(4⋅a)  This is the same by the  associative property of multiplication and the communicative property of multiplication


4⋅2⋅a⋅2   This brings in an extra 2 so it is not the same.


8a    4*2 = 8 so this is the same


4⋅2+a⋅2  This is the not the same   8+2a  is not the same as 8a

8 0
3 years ago
11/15% of a quantity is equal to what fraction of the​ quantity?
Contact [7]

Percent means “out of 100.” So 5% really means 5/100.

11 / 15% = 11 / (15/100) = 1100 / 15 = 220 / 3. That’s the answer.

5 0
3 years ago
Use law of sines or law of cosines to find the length of side AB Please show work !!
scoray [572]

Answer:

AB = 11.3

Step-by-step explanation:

Given

The attached triangle

Required

Length AB

To do this, we make use of sine law which is represented as:

\frac{a}{\sin(a)} = \frac{b}{\sin(b)} = \frac{c}{\sin(c)}

So, we have:

\frac{15}{\sin(70)} = \frac{AB}{\sin(45)}

Make AB the subject

AB = \frac{15}{\sin(70)} * \sin(45)

AB = \frac{15}{0.9397} *0.7071

AB = 11.3

7 0
3 years ago
What is 59+14+85+98 over 56 to the power of 3
Stells [14]

283136/1792 Is your CORRECT answer

3 0
3 years ago
PLEASE HELP QUICKLY. I NEED HELP!
mote1985 [20]

Answer:

4√5

Step-by-step explanation:

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c = √80

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8 0
3 years ago
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