1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Dima020 [189]
3 years ago
15

Thanks in advance ❤❤❤❤❤❤​

Chemistry
2 answers:
yaroslaw [1]3 years ago
8 0

Answer:

m<_=9

Explanation:

it is because when 18 is ÷by 2 it give 9

lesantik [10]3 years ago
4 0

Answer:

A

Divide both sides by 2

m ≤9

You might be interested in
6) Determine la concentración de una solución que ha sido preparada añadiendo 80cc de agua a 320cc de solución alcohólica al 20%
Xelga [282]

Answer:

16% v/v es la nueva concentración de alcohol en la solución

Explanation:

El porcentaje volumen/volumen (% v/v) es definido como 100 veces la relación entre el volumen de soluto (Alcohol en este caso) y el volumen total de la solución (Agua + Alcohol). Para resolver esta pregunta necesitamos hallar el volumen de alcohol y el de agua:

<em>Volumen alcohol:</em>

320cc * (20cc etanol / 100cc) = 64cc etanol

<em>Volumen agua:</em>

80cc + (320cc-64cc) = 336cc agua

<em>% v/v:</em>

64cc / (336cc + 64cc) * 100

= 16% v/v es la nueva concentración de alcohol en la solución

3 0
3 years ago
What is the weight on earth of a book with a mass of 1.5kg
Marta_Voda [28]
1.5x10
=15N

sorry if im wrong
8 0
3 years ago
Read 2 more answers
Entropy is greater at higher trophic levels than at lower levels.. True of False
loris [4]
Answer: True

It is true that entropy is greater at higher trophic levels compared to the lower levels. The amount of energy and entropy in a certain food chain varies between trophic level. It specifically increases from one trophic level to another.  

8 0
3 years ago
Read 2 more answers
If copper carbonate system is heated for too short a time, what will you notice for mass percent of copper be too large or too s
sammy [17]

Answer:

The mass percent of copper as element is the same.

Explanation:

First of all we need the reaction that is presented below:

CuCO_{3 (s)} +Heat → CuO_{(s)} + CO_{2 (g)}

The mass percent of copper (Cu) as element is the same because of during the reaction the element only transform its nature from copper carbonate (CuCO_{3 (s)}) to copper oxide (CuO_{(s)}), the latter is a solid and will remain in the system.

On the other hand, you will note that the global percentage mass will be small because of the reaction produce (CO_{2 (g)}) that is a gas and this one will escape for the system.  

Have a great day!

3 0
3 years ago
Find the linear function Cequals​f(F) that gives the reading on the Celsius temperature scale corresponding to a reading on the
padilas [110]

Answer:

C = (5/9) F - (160/9)

They both read equal at Z = - 40

Explanation:

We are looking for a linear function so we can write the following condition

Y = aX + b

Applying it to the exercise we got C = a F + b

Let's use the facts that C = 0 when F = 32 and C = 100 when F = 212

0 = 32 a + b            (1)

100 = 212 a + b       (2)

From (1) b = - 32 a , when we replace this in (2) we obtain a = (5/9)

and b = - (5/9)32 = - 160/9

Finally the linear function is C = (5/9) F - (160/9)

Both readings are equal at a Z number so

Z = (5/9) Z - 160/9

(4/9) Z = -160/9 and Z = - 40

6 0
3 years ago
Other questions:
  • List the number of each atom in the formulas above: <br> H<br> O<br> C<br> I just need the carbon
    14·2 answers
  • The number of protons in an uncharged atom _____. the number of protons in an uncharged atom _____. determines its mass number e
    9·1 answer
  • Can someone help me complete this chart down below? (READ CAREFULLY)
    13·1 answer
  • 2. How many moles of copper are needed to react with sulfur to produce 0.25 moles of
    10·1 answer
  • Al + 02 --&gt; Al 2 0 3
    5·1 answer
  • .
    5·1 answer
  • How many moles are in 25.58 grams of H20? SHOW WORK
    8·1 answer
  • What is the formula mass of
    9·1 answer
  • Genetic material (DNA) can be found in:
    9·2 answers
  • 1) how would you explain the plateaus in your heating and heating curves?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!