Answers
When a student is warming a chemical in a container using a special burner, it is very important to focus on safety by using the right safety tools.
What is the safety equipment
First, the student needs to wear the right safety clothes like a lab coat, gloves, and goggles to protect themselves from getting splashed or hurt by chemicals. A lab coat stops chemicals from touching the skin, gloves keep the hands safe, and safety goggles protect the eyes from chemicals
and hot things.
Furthermore, using a fume hood is necessary to make sure there is enough fresh air circulating and to remove any dangerous fumes or gases that might be released while heating things up.
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Answer:The student should be wearing a lab coat or maybe an apron to prevent chemicals from spilling or exploding onto their clothes, I do recommend a lab coat better though because it can protect your skin better. Next, make sure while messing with chemicals you are always wearing goggles, if you are not wearing them there is a chance that after touching chemicals you could touch your eyes. And that brings me to washing your hands straight away after messing with chemicals. You could also wear gloves and just take them off when you're done but if you don't have clean hands afterward you could always put the chemicals all over your skin. But in case you do touch your eyes there is always an emergency eyewash station somewhere in the lab room. And if you are to get Chemicals on your skin, in your hair, on your clothes, or to be on fire, there shall be a shower somewhere to get rid of that. But if you read the instructions or listen closely to the teacher you shall have no problem.
Explanation:
I kinda got off topic
Related Questions
A solution in which the pH is 1.6 would be described asa. very acidicb. slightly acidicc. very basicd. slightly basice. neutral
Which yield comes from measurements obtained during a real experiment?A) actual yield B) theoretical yieldC) percent yield
A balloon filled with 0.500 L of air at sea level is submerged in the water to a depth that produces a pressure of 3.25 atm. What is the volume of the balloon at this depth? a. 0.154 L b. 6.50 L c. 0.615 L d. 1.63 L d. None of the above
Suppose you perform a titration of an unknown weak acid solution. You start with 4.00 mL of the weak acid and find that it takes 14.2 mL of 0.0500 M NaOH to reach the equivalence point. What is the concentration of the unknown weak acid solution
Express your answer as a chemical formula.
1 mol Al; 1 mol O2
4 mol Al; 2.5 mol O2
12 mol Al; 10 mol O2
15.4 mol Al; 10.7 mol O2
Answers
Answer:
1 mol Al; 1 mol O2
Explanation:ol Al; 10 mol O2
15.4 mol Al; 10.7 mol O2
or the reaction shown, find the limiting reactant for each of the initial quantities of reactants.
4Al(s) + 302(g) —> 2Al2O3(s)
Express your answer aor the reaction shown, find the limiting reactant for each of the initial quantities of reactants.
4Al(s) + 302(g) —> 2Al2O3(s)
Express your answer as a chemical formula.
1 mol Al; 1 mol O2
4 mol Al; 2.5 mol O2
12 mol Al; 10 mol O2
15.4 mol Al; 10.7 mol O2
Hold on, our servers are swamped. Wait for your answer to fully load.s a chemical formula.
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Combined gas law,
So, the gas will occupy 22.4 L at STP
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Answer:
(C3H8) produces 660 g of CO2 and 360 g of H2O
Explanation:
The balanced chemical equation for the combustion of propane (C3H8) is:
C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(g)
This equation tells us that for every molecule of propane (C3H8) that reacts with 5 molecules of oxygen (O2), 3 molecules of carbon dioxide (CO2) and 4 molecules of water (H2O) are produced.
So, if we have 220. g of propane (C3H8), we can find the amount of CO2 and H2O produced by using the mole ratio from the balanced equation:
1 mole C3H8 reacts with 5 moles of O2 to produce 3 moles of CO2 and 4 moles of H2O
We can find the number of moles of C3H8 by dividing the mass by the molar mass of C3H8 (44 g/mol):
220 g / 44 g/mol = 5 moles C3H8
So, the number of moles of CO2 and H2O produced can be found by multiplying the number of moles of C3H8 by the mole ratio:
3 moles CO2 = 3 moles CO2/1 mole C3H8 * 5 moles C3H8 = 15 moles CO2
4 moles H2O = 4 moles H2O/1 mole C3H8 * 5 moles C3H8 = 20 moles H2O
Finally, we can convert the number of moles of CO2 and H2O to grams by multiplying by their molar masses (44 g/mol for CO2 and 18 g/mol for H2O):
15 moles CO2 * 44 g/mol = 660 g CO2
20 moles H2O * 18 g/mol = 360 g H2O
So, the combustion of 220 g of propane (C3H8) produces 660 g of CO2 and 360 g of H2O.
b. Intermolecular forces become weaker
c. Intermolecular forces do not change
d. Energy increases
Engshus
ratoway
Answers
As the speed of the particles decreases, intermolecular forces become stronger. Thus, the correct option for this question is A.
What are Intermolecular forces?
The intermolecular forces may be defined as the forces of attraction. that is present between atoms, molecules, and ions when they are placed close to each other in order to form a compound or element. This force is continuously acting on the neighboring particles of different molecules.
It is found that at low temperature, when the speed of molecules/particles decrease, they migrate closer to one another that results in their intermolecular forces that become stronger as compared to the initial one.
As the attraction between molecules gradually increases, their movement decreases, and undergo fewer collisions between them.
Therefore, as the speed of the particles decreases, intermolecular forces become stronger. Thus, the correct option for this question is A.
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Answer:
B
Explanation:
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Answer: 432 grams
Explanation:NaBr must he measure out to have 4.20 moles.
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Answer:
A physical change is reversible and the changes made are only physical (smell, physical state, volume, etc) and most importantly no new substance is formed. In a chemical change, a new substance is formed, the chemical properties are changed, and it's permanent.