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Blizzard [7]
3 years ago
10

8. Which are types of systems? (Choose all that apply)

Chemistry
1 answer:
Crank3 years ago
7 0

Answer:

  1. Closed System
  2. Open System
  3. Isolated System

Explanation:

In thermodynamics, there are three types of systems and they include:

  • The closed
  • The open
  • And the Isolated system

The closed system is capable of exchanging only energy within its surroundings.

An open system is capable of exchanging both energy and matter within its surroundings.

While an isolated system cannot exchange either matter or energy within its surroundings.

There is nothing like a shared system in thermodynamics.

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42,000 mL is equal to L
Goshia [24]

1000ml = 1l

42000ml = 42l

3 0
3 years ago
A major component of gasoline is octane (C8H18). When octane is burned in air, it chemically reacts with oxygen gas (O2) to prod
Olin [163]

Answer:

The answer is 6.25g.

Explanation:

First create your balanced equation. This will give you the stoich ratios needed to answer the question:

2C8H18 + 25O2 → 16CO2 + 18H2O

Remember, we need to work in terms of NUMBERS, but the question gives us MASS. Therefore the next step is to convert the mass of O2 into moles of O2 by dividing by the molar mass:

7.72 g / 16 g/mol = 0.482 mol

Now we can use the stoich ratio from the equation to determine how many moles of H2O are produced:

x mol H2O / 0.482 mol O2 = 18 H2O / 25 O2

x = 0.347 mol H2O

The question wants the mass of water, so convert moles back into mass by multiplying by the molar mass of water:

0.347 mol x 18 g/mol = 6.25g

8 0
4 years ago
Read 2 more answers
Rusty is a forensic investigator examining the crime scene of a homicide. The medical examiner has determined that the victim di
boyakko [2]

Answer:

The presence of dust on the victim's right or left hand

Explanation:

The presence of powder, the route of the bullet, and the damage the bullet generates tells us what the caliber of the weapon was like, and type.

The presence of gunpowder in the hand is a consequence of the person being shot, usually in the victim's skilled hand.

4 0
3 years ago
Which of the following solids would possess the lowest melting point?
saul85 [17]
The melting points of the compounds from the choices are listed below:

a. C25H52 -> +47 to +56 degrees celsius 

b. Hg -> -38.83 degrees celsius

c. CaCl2 -> +772 degrees celsius

d. CuO -> +1326 degrees celsius

It is evident from the listed melting points above that mercury (Hg) has the lowest melting point. This is why mercury is liquid at room temperature. 
4 0
3 years ago
Read 2 more answers
What involves 2 non metals ionic or covalent bonds
Juli2301 [7.4K]

Answer:

A bond forms between two non metals is covalent

Explanation:

For example Chlorine Cl is a non metal bond in Cl - Cl is covalent

8 0
3 years ago
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