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nikitadnepr [17]
4 years ago
7

In a closed or isolated system , matter can not be created or destroyed. It can change Forms but is conserved true or false

Chemistry
1 answer:
melomori [17]4 years ago
3 0

True this is what i think


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suppose you want to do an experiment to hear how three different objects would sound when you dropping them the same distance. y
hodyreva [135]
The variable would be the distance you dropped them.

8 0
4 years ago
How can constraints be used to help define the problem?
vitfil [10]

Answer:

Constraints are restrictions that need to be placed upon variables 

Explanation:

Constraints are restrictions (limitations, boundaries) that need to be placed upon variables used in equations that model real-world situations. It is possible that certain solutions which make an equation true mathematically, may not make any sense in the context of a real-world word problem.

6 0
3 years ago
A year ago If an element has 12 protons and 17 neutrons, how many electrons must it have?
Dafna1 [17]
<span>if given element is neutral, than it has to have same number of protons and electrons. so in this case it is 12 electrons.</span><span>

Hope it helps :)

</span>
4 0
3 years ago
Read 2 more answers
When sulfur burns in air, it forms sulfur dioxide as shown by the equation below.what volume of SO2 is produced when 2.35 g of s
Naddik [55]

1.64 L of sulfur dioxide (SO₂)

Explanation:

We have the following chemical reaction:

S (s) + O₂ (g) → SO₂ (g)

First we calculate the number of moles of sulfur (S):

number of moles = mass / molar weight

number of moles of sulfur = 2.35 / 32 = 0.0734 moles

Looking at the chemical reaction we see that 1 moles of sulfur (S) produces 1 moles of sulfur dioxide (SO₂), so 0.0734 moles of sulfur will produce 0.0734 moles of sulfur dioxide (SO₂).

To calculate the volume of sulfur dioxide (SO₂), assuming that the sulfur dioxide is behaving as an ideal gas and the we determine the gas volume under standard temperature and pressure conditions, we use the following formula:

number of moles = volume / 22.4 (L/mole)

volume = number of moles × 22.4

volume of SO₂ = 0.0734 × 22.4 = 1.64 L

Learn more about:

molar volume

brainly.com/question/11160940

brainly.com/question/506048

#learnwithBrainly

PS: I appreciate that you took the time and effort to write the chemical equation in a readable way. This makes the question to be very rare :D

5 0
3 years ago
Heptane (C7H16) and octane (C8H18) are constitutents of gasoline. At 80 degree celsius, the vapor pressure of heptane is 428mmHg
ss7ja [257]
Looking at this equation P= (pa*pb)/ (pa+(pb-pa)) ya  where pa=vap press a and ya= vap composition a and P= total pressure,it relates vapor pressure mixture to vapor composition. This is derived using the combination of Dalton's and Raoult's laws.
4 0
4 years ago
Read 2 more answers
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