• Why isn't water flammable?

    Best answer: Things in nature naturally tend toward the lowest energy state they can be in, like how a ball rolls down a hill and finds the bottom of a valley. Burning is what happens when stuff reacts and combines with free oxygen in the air, releasing energy and leaving the chemicals in a lower energy state. The condition of... show more
    Best answer: Things in nature naturally tend toward the lowest energy state they can be in, like how a ball rolls down a hill and finds the bottom of a valley. Burning is what happens when stuff reacts and combines with free oxygen in the air, releasing energy and leaving the chemicals in a lower energy state. The condition of being burnt is like the ball at the bottom of the valley ie a lower energy state.

    So why doesn't everything just start burning and loose energy? Well the normal condition of stable material is already like a ball at the bottom of one valley and over the next ridge is an even deeper valley representing the state of being burned. So to get into the deeper valley the ball needs an input of energy to roll it up the ridge and then it can roll down the other side on its own. And for burning the input of energy is heat. Once something starts burning and releasing energy, the process provides its own heat and promotes further burning

    Water is already a low energy way for oxygen and hydrogen to exist, lower than when they are separate free gasses. To make a material combust in water you would need to get the H and O2 out of their stable lower energy state by supplying enough energy to break them apart.
    9 answers · 4 days ago
  • Help me there’s lotion on my incense and it’s burning slowly! Should I call the fire department? Is lotion flammable? Im in a panic!?

    Best answer: No, don't call the fire department. You are finding out if your lotion is flammable. If you don't want the lotion to burn, put some water on it, or put the whole business in a sink or bathtub and run water on all of it. If you can't deal with a small fire, you shouldn't be burning anything, period. show more
    Best answer: No, don't call the fire department. You are finding out if your lotion is flammable. If you don't want the lotion to burn, put some water on it, or put the whole business in a sink or bathtub and run water on all of it.

    If you can't deal with a small fire, you shouldn't be burning anything, period.
    4 answers · 1 day ago
  • How many moles of sulfuric acid are required to react with 5 moles of aluminum metal via the following reaction?

    2 Al(s) + 3 H2SO4(aq) → Al2(SO4)3(aq) + 3 H2(g)
    2 Al(s) + 3 H2SO4(aq) → Al2(SO4)3(aq) + 3 H2(g)
    4 answers · 3 days ago
  • Why do electrons flow out positive electrode of car battery?

    Since a car battery is galvanic then shouldn’t the anode be negative?
    Since a car battery is galvanic then shouldn’t the anode be negative?
    6 answers · 5 days ago
  • Toluene is dangerous?

    Best answer: ...
    I'd want real good ventilation or an effective fume mask
    see the hazard section on this MSDS
    http://www.sciencelab.com/msds.php?msdsI...

    When you get a good response,
    please consider giving a best answer.
    This is the only reward we get.
    Best answer: ...
    I'd want real good ventilation or an effective fume mask
    see the hazard section on this MSDS
    http://www.sciencelab.com/msds.php?msdsI...

    When you get a good response,
    please consider giving a best answer.
    This is the only reward we get.
    4 answers · 4 days ago
  • Why is system analysis necessary?

    Best answer: I am no expert but I suggest: 1. to understand the system; 2. to identify weaknesses in the system; 3. to find ways of improving the system, so increasing its effectiveness; 4. as a basis for designing a new system; 5. to document the system to enable others to understand it, maintain it and implement it. Systems... show more
    Best answer: I am no expert but I suggest:
    1. to understand the system;
    2. to identify weaknesses in the system;
    3. to find ways of improving the system, so increasing its effectiveness;
    4. as a basis for designing a new system;
    5. to document the system to enable others to understand it, maintain it and implement it.

    Systems analysis applies to all systems, whether behavioural, paper based of computer based. Any may need to be optimised from time to time. Without analysis and documentation (ideally using a formal approach), you are firing blind.
    4 answers · 4 days ago
  • If a metal reacts with a strong acid at 25 degrees C ans produces 0.023 mole of H2 what is the volume of "dry" hydrogen at STP?

    I know that STP means T= 273K and P= 1 atm. The formula would be PV=nRT , but I'm unsure of what to do next and I need some help.
    I know that STP means T= 273K and P= 1 atm. The formula would be PV=nRT , but I'm unsure of what to do next and I need some help.
    4 answers · 6 days ago
  • Chem Help!?

    You purchase a butane tank that can hold gas safely up to a pressure of 38.1 atm. When the tank contains 100. grams of butane (C4H10) at 19.9°C, the gas exerts a pressure of 13.8 atm. What is the highest temperature to which the butane can be heated safely? (Report your answer in °C.) Assume that butane is an ideal... show more
    You purchase a butane tank that can hold gas safely up to a pressure of 38.1 atm. When the tank contains 100. grams of butane (C4H10) at 19.9°C, the gas exerts a pressure of 13.8 atm. What is the highest temperature to which the butane can be heated safely? (Report your answer in °C.) Assume that butane is an ideal gas that does not liquify.
    5 answers · 5 days ago
  • Can heat transfer be considered a chemical reaction?

    Best answer: No.

    The emission or absorption of thermal energy usually accompanies a chemical reaction, i.e. exothermic and endothermic reactions.
    Best answer: No.

    The emission or absorption of thermal energy usually accompanies a chemical reaction, i.e. exothermic and endothermic reactions.
    4 answers · 6 days ago
  • Chemistry yikes?

    What is the percentage of hydrogen in C3H8O? The molecular weight of C is 12.011 g/mol, of H 1.00794 g/mol, and of O 15.9994 g/mol.
    What is the percentage of hydrogen in C3H8O? The molecular weight of C is 12.011 g/mol, of H 1.00794 g/mol, and of O 15.9994 g/mol.
    5 answers · 6 days ago
  • Please help with Chemistry :(?

    Best answer: 54.87% of 114 g = 62.6 g
    Best answer: 54.87% of 114 g = 62.6 g
    4 answers · 6 days ago
  • 15 moles of carbon monoxide was produced during incomplete combustion of methane, how much would it weigh?

    If you could please just leave the answer, (THE RIGHT ANSWER WILL GET THAT BEST ANSWER THINGY) help please
    If you could please just leave the answer, (THE RIGHT ANSWER WILL GET THAT BEST ANSWER THINGY) help please
    4 answers · 7 days ago
  • A person made up a solution of 5 M NaOH. What is the concentration in millimoles ?

    Best answer: concentration cannot just be in millimoles ... conc. can be an amount per volume <<< changing moles to millimoles, you can either leave the volume as liters, or change to milliliters

    millimoles/liter ... 5000
    millimoles/millileter ... 5
    Best answer: concentration cannot just be in millimoles ... conc. can be an amount per volume <<< changing moles to millimoles, you can either leave the volume as liters, or change to milliliters

    millimoles/liter ... 5000
    millimoles/millileter ... 5
    4 answers · 7 days ago