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3 years ago

Which choice is not an example of a molecule? O3 H2S Mn KOH

Mathematics

1 answer:

trasher [3.6K]3 years ago

7 0

Answer:

Step-by-step explanation:

If we look at the options given, we will easily realize that Mn is an element and not a molecule.

Hence the others are molecules but Mn is just an element and not a molecule because a molecule must contain a chemical bond- a linkage between two or more atoms given that a molecule is the smallest unit of a compound.

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PLEASE HELP, HELP ME!!!!

Andreas93 [3]

SA= 2(lw+lh+wh)
H=72
W=16
L=18

SA=2(288+1296+1152)
SA=5472 square inches

5,472 square inches will be painted

Hope you get help.

8 0

3 years ago

Find the positive base $b$ in which the equation $5_b \cdot 23_b = 151_b$ is valid.

DanielleElmas [232]

Answer:

b=7

Step-by-step explanation:

We want to determine the positive base b in which:

$5_b \cdot 23_b = 151_b$

The easiest way to approach this is to convert all the numbers to base 10.

$5_b=5Xb^0=5\\23_b =(2Xb^1)+(3Xb^0)=2b+3\\151_b=(1Xb^2)+(5Xb^1)+(1Xb^0)=b^2+5b+1\\Therefore:\\5_b \cdot 23_b = 151_b\\5(2b+3)=b^2+5b+1\\10b+15=b^2+5b+1\\b^2+5b+1-10b-15=0$

$b^2-5b-14=0$

Next, we factorize the resulting expression.

$b^2-5b-14=b^2-7b+2b-14=0\\b(b-7)+2(b-7)=0\\(b-7)(b+2)=0\\b-7=0\: or \: b+2=0\\b=7\: or \: b=-2$

The positive value of b for which the equality hold is 7.

3 0

3 years ago

It takes Austin 8 hours longer than Elliott to construct a wooden chair in shop class. When the classmates work together, they c

Scorpion4ik [409]

Answer:

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

ariel is saving money for a new computer that costs $650. she has $150, which she puts into an account. then she adds $25 each w

Oksanka [162]

20 weeks

The initial equation is 25x+150=650. Since she already has 150, we can subtract that from the total to get 500. We now have that 25x=500. Divide by 25 on both sides to get 20 weeks

:)

5 0

3 years ago

Ok so I have math homework and I need so help ASAP I need to find the average of 35 40 12 16 25 and 10 so could someone plz plz

sleet_krkn [62]

Answer: 23! Add your numbers, and divide that sum by the amount of numbers added to get average!

Step-by-step explanation:

The average is found by adding all numbers of the sample, and diving by the amount of numbers added. For example:

The average of 1, 2, and 3. You first add 1 + 2 + 3 to get 6.

You then divide 6 by the number of numbers added, being 3 (1, 2, and 3.).

6 / 3 = 2. The average of 1, 2, and 3 is 2.

In your case, you have 35, 40, 12, 16, 25, and 10.

First you add 35 + 40 + 12 + 16 + 25 + 10 to get 138.

Then you divide 138 by the amount of numbers you added: 6.

138 divided by 6 = 23 (138/6).

Hope this helps!

Add your numbers, and divide that sum by the amount of numbers added to get average!

4 0

3 years ago

Read 2 more answers