Why would cooking equipment be responsible for more total fires but smoking smoking responsible for more fire deaths?

Answers

Answer 1

Answer:

For the last few decades fires started by any type of smoking material has been the number one leading cause for household fire fatalities. It could just be that people luckily escape in time with cooking equipment fires, and smoking related fires just result in more deaths.


Related Questions

In an ecosystem, why can only one species fill an ecological niche?

Answers

Answer:

Explanation:es porque las especies con nichos idénticos tienen las mismas necesidades, lo que significa que competirían exactamente por los mismos recursos.

50cm3 of sodium hydroxide solution was titrated against a solution of sulfuric acid. The concentration of the sodium hydroxide solution was 20g/dm3. Work out the concentration of the acid in grams per litre if it took 25cm3 of acid to completely neutralise the alkali. The relative molecular mass of sulfuric acid is 98.

Answers

Answer:

49 g/L is the concentration of the acid

Explanation:

Firstly, we proceed to write the equation of reaction.

2NaOH + H2SO4 ——-> Na2SO4 + 2H2O

We can see that 1 mole of the base reacted with two moles of the acid.

kindly note that dm^3 is same as liter

Firstly, we need to get the concentration of the reacted sulphuric acid in g/L

we use the simple titration equation below;

CaVa/CbVb = Na/Nb

From the question;

Ca = ?

Va = 25 cm^3

Cb = 20 g/L

we convert this to concentration in mol/L

Mathematically, that is concentration in g/L divided by molar mass in g/mole

molar mass of NaOH = 40 g/mol

so we have; 20g/L / 40 = 0.5 mol/L

Vb = 50 cm^3

Na = 1

Nb = 2

Where C represents concentrations, V volumes and N , number of moles

Now, substitute the values;

Ca * 25/0.5 * 50 = 1/2

25Ca/25 = 0.5

So Ca = 0.5 mol/L

Now to get the concentration of H2SO4 in g/L

What we do is to multiply the concentration in mol/L by molar mass in g/mol

That would be 0.5 * 98 = 49 g/L

The concentration of the acid in grams per litre is 49g/L

From the question,

We are to determine concentration of the sodium hydroxide solution.

First, we will write a balanced chemical equation for the reaction.

The balanced chemical equation for the reaction is

2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O

This means,

2 moles of NaOH is required to completely neutralize 1 mole of H₂SO₄

From the formula

[tex]\frac{C_{A}V_{A} }{C_{B}V_{B} }=\frac{n_{A} }{n_{B} }[/tex]

Where

[tex]C_{A}[/tex] is the concentration of acid

[tex]C_{B}[/tex] is the concentration of base

[tex]V_{A}[/tex] is the volume of acid

[tex]V_{B}[/tex] is the volume of base

[tex]n_{A}[/tex] is the mole ratio of acid

[tex]n_{B}[/tex] is the mole ratio of base

From the question

[tex]V_{A}= 25 \ cm^{3}[/tex]

[tex]C_{B} = 20 \ g/dm^{3}[/tex]

Convert this to mol/dm³

Molar mass of NaOH = 40 g/mol

Using the formula

[tex]Concentration\ in \ mol/dm^{3} =\frac{Concentration\ in \ g/dm^{3}}{Molar\ mass}[/tex]

∴ Concentration of the NaOH in mol/dm³ = [tex]\frac{20}{40}[/tex]

Concentration of the NaOH in mol/dm³ = 0.5 mol/dm³

∴ [tex]C_{B} = 0.5 \ mol/dm^{3}[/tex]

and

[tex]V_{B} = 50 \ cm^{3}[/tex]

From the balanced chemical equation

[tex]n_{A} = 1[/tex]

[tex]n_{B} = 2[/tex]

Putting the parameters into the formula, we get

[tex]\frac{C_{A} \times 25}{0.5 \times 50}= \frac{1}{2}[/tex]

Now, this becomes

[tex]2 \times 25 \times C_{A}=0.5 \times 50 \times 1[/tex]

Then, we get

[tex]50 C_{A} = 25[/tex]

∴ [tex]C_{A} = \frac{25}{50}[/tex]

[tex]C_{A} = 0.5 \ mol/dm^{3} = 0.5 \ mol/L[/tex]

Now, we will determine the concentration in g/L

From the formula,

Concentration in g/L = Concentration in mol/L × Molar mass

From the question,

Molar mass of sulfuric acid = 98

∴ Concentration of the acid in g/L = 0.5 × 98

Concentration of the acid in g/L = 49 g/L

Hence, the concentration of the acid in grams per litre is 49g/L

Learn more here: https://brainly.com/question/25290615

Can someone please help me with this question

Answers

Answer:

the second one I think...

Answer:

The answer is the first one.

Acceleration is the change of velocity

Velocity is another term for speed with direction.

What is the definition of a scientific theory

A) A method of learning that emphasizes reason as the way to understand the world.
B) A brief statement that summarizes past observations and predicts future ones.
C) A model that explains the underlying reasons for observations and laws.
D) The equivalent of a scientific opinion which others may disagree with.
E) None of these.

Answers

Answer:

The correct answer to the following question will be Option C.

Explanation:

The theory seems to be the context within which findings are explained as well as possible predictions are made. This theoretical perspective discusses the factors behind the results as well as the laws.Theories have been used in scientific knowledge to give wide interpretations to accommodate observed facts in case the root reason is still yet to be found as well as characterized.

So that Option C will be the right answer.

The density was of a solution of sulfuric acid is 1.285g/cm3 and it is 38.08% (by weight) acid. How many millimeters of the acid solution do you need to supply 125 grams of sulfuric acid?

Answers

Answer:

255.5cm³

Explanation:

A solution that is 38.08 % by weight has 38.08g of sulfuric acid per 100g of total solution. Thus, mass of solution you need to obtain 125g is:

125g H₂SO₄ × (100g solution / 38.08g H₂SO₄) = 328.3g of solution

As density of the solution is 1.285g / cm³, the volume of 328.3g is:

328.3g × (1cm³ / 1.285g) = 255.5cm³

A 2.575 g piece of gold (specific heat = 0.129 J/g°C) at a temperature of 75°C is placed into cold water at 10°C. If the gold loses 10.0 J of energy, what is its final

temperature in the water? Enter your answer to the

nearest whole number of °C.

Answers

Answer:

The final temperature of the mixture is 44.9°C

Explanation:

Mass of the substance (gold) = 2.575g

Specific heat capacity of gold = 0.129J/g°C

Initial temperature (T1) = 75°C

Final temperature (T2) = ?

Energy lost = 10J

Heat energy(Q) = MC∇T

Q = heat energy (in this case lost)

M = mass of the substance

C = specific heat capacity of the substance

∇T = change in temperature of the substance = (T2 - T1)

Q = MC∇T

Q = MC(T2 - T1)

-10 = 2.575 × 0.129 × (T2 - 75) energy is -ve because it was energy lost.

-10 = 0.3321 × (T2 - 75)

-10 = 0.3321T2 - 24.9075

Collect like terms

0.3321T2 = 24.9075 - 10

0.3321T2 = 14.9075

T2 = 14.9075 / 0.3321

T2 = 44.88

T2 = 44.9°C

The final temperature of the mixture is 44.9°C

Calculate the number of moles of MgO if the mass of MgO (magnesium oxide) is 50 g?

Please help... I will mark the answer with brainlist...
 

Answers

Answer:

1.24mol

Explanation:

m(MgO)=50g

molar mass=40.30g/mol (i search in google coz dosnt have book)

n=mass/molar mass

=50/40.30

=1.24mol

1. Look at yourself in the front of the spoon (the side where the food sits). What do you see?
The you see the image

Answers

Answer:

If you look at yourself in the front of the spoon, you see that the mirror forms an inverted real image.

Explanation:

The word 'concave' means to bend inwards.

A curved mirror is a mirror that has a curved reflecting surface.

The front side of the spoon is just like a concave mirror. If you look at yourself in the front of the spoon, you see that the mirror forms an inverted real image.

Concave mirrors produce real inverted image of an object only if it is placed further away from the mirror than the focal point.

Answer:

It shows me upside down like a ghost. OoooOooh

Explanation:

Boo

⚠️SOMEONE PLEASE HELP⚠️
Which describes two phases in dynamic equilibrium?
O A. Molecules in one phase continually change to the other.
O B. The total number of molecules must be equal in each phase.
O C. Molecules do not change from one phase to the other.
O D. The total number of molecules in each phase stays constant.​

Answers

Answer:

The total number of molecules in each phase stays constant

Explanation:

i just took the test and got it right.

In the dynamic equilibrium between 2 phases, the total number of molecules in each phase stays constant (Option D).

When does dynamic equilibrium occur?

Dynamic equilibrium occurs when the direct and reverse rates are equal and the concentrations remain constant over time.

Which describes two phases in dynamic equilibrium?

A. Molecules in one phase continually change to the other. NO. Molecules in both phases continually change.B. The total number of molecules must be equal in each phase. NO. This is not necessarily true.C. Molecules do not change from one phase to the other. NO. This would be a static equilibrium.D. The total number of molecules in each phase stays constant.​ YES. Since the forward and reverse rates are equal.

In the dynamic equilibrium between 2 phases, the total number of molecules in each phase stays constant (Option D).

Learn more about dynamic equilibrium here: https://brainly.com/question/12920261

#SPJ4

where are people mostly exposed to chemicals?

Answers

Answer:

people are mostly exposed to chemicals through their nose, mouth, eyes, and ears

Explanation:

they are the easiest way for anything, bad or good, to enter the body because  people touch their face alot.

This might not answer what you were looking for but the other answer covered it pretty well so I thought I'd give you another angle to the question!

Hope this helps!!

The diagram shows the setup of an experiment. The observations of the experiment are listed in the table below the diagram. A beaker filled three-fourths with a liquid labeled colorless silver nitrate solution is shown. A small strip is shown inside the beaker. The strip is labeled copper strip. The title of the image is Experimental Setup. Experimental Observations Observation Description 1 Copper strip became thinner 2 Gray particles were deposited on the edge of the strip Which of the following is the correct explanation for one of the given observations? (4 points) Observation 2 is a result of nitrate ions moving into the solution. Observation 2 is a result of silver ions moving into the solution. Observation 1 is a result of copper atoms losing two electrons. Observation 1 is a result of silver atoms losing one electron.

Answers

Answer:

The answer is Observation 1 is a result of copper atoms losing two electrons.

Explanation:

The electrons result in the color change of the copper strip, causing the gray particles to join onto the metal.

Answer:

C

Explanation:

Observation 1 is a result of the copper atoms losing two electrons. It came out as the right answer.

What would the molecular formula be if lithium and sulfur reacted to form a neutral compound?

Answers

Answer:

Li2S

Explanation:

Since Lithium gives away one electron, I believe it goes to Sulfur.

Hope this helps! :)

Answer:

Li*2S

Explanation:

ed tell chem

WILL MARK BRAINLIEST IF GOOD EXPLANATION...

Ethyl acetate is a sweet-smelling solvent used in varnishes and fingernail polish remover. It is produced industrially by heating acetic acid and ethanol
together in the presence of sulfuric acid, which is added to speed up the
reaction. The ethyl acetate is distilled off as it is formed. The equation for the
process is as follows.

CH3COOH + CH3CH2OH --> CH3COOCH2CH3 + H2O

Determine the percentage yield in the following cases:
a. 68.3 g of ethyl acetate should be produced but only 43.9 g is recovered.
b. 0.0419 mol of ethyl acetate is produced but 0.0722 mol is expected. (Hint:
Percentage yield can also be calculated by dividing the actual yield in moles
by the theoretical yield in moles.)
c. 4.29 mol of ethanol is reacted with excess acetic acid, but only 2.98 mol of
ethyl acetate is produced.
d. A mixture of 0.58 mol ethanol and 0.82 mol acetic acid is reacted and 0.46
mol ethyl acetate is produced. (Hint: What is the limiting reactant?)

Answers

Answer:

a) 64.27%

b) 58%

c) ethanol is the limiting reactant

d) ethanol is the limiting reactant

Explanation:

We have to note that the expected yield is the theoretical yield while the actual mass or amount of product formed is the actual yield.

a) theoretical yield=68.3g

Actual yield= 43.9 g

Percentage yield= 43.9/68.3 ×100

Percentage yield= 64.27%

b) theoretical yield= 0.0722 moles

Actual yield = 0.0419

Percentage yield= 0.0419/0.0722 × 100

Percentage yield= 58%

c) note that the limiting reactant yields the least number of moles of product

Ethanol will be the limiting reactant since it is not present in excess.

d) from the reaction equation;

1 mole of acetic acid produces 1 mole of ethyl acetate

0.58 moles of ethanol produces 0.58 moles of ethyl acetate

1 mole of acetic acid yields 1 mole of ethyl acetate

Hence 0.82 moles of acetic acid yields 0.82 moles of ethyl acetate

Hence ethanol is the limiting reactant.

the wavelength of a light wave whose frequency 5.0x 10^9 s^-1 is

Answers

Answer:

wavelength = 6 cm .

Explanation:

frequency given = 5 x 10⁹ .

wavelength = velocity of light / frequency

= 3 x 10⁸ / 5 x 10⁹

= .06 m

= 6 cm

Which process occurs at each link in a food chain?

Answers

Some Energy is released into the environment as heat

Explanation:

let's consider the effectiveness of two antacids to illustrate how chemical calculations can be important in daily life. Baking soda NaHCO3, is often used as an antacid. It neutralizes excess hydrochloric acid sereted by stomach. The balanced equation for the reaction is NaHCO3(s)+HCl(aq)=H20(l)+CO2(g). Milk of magnesia, which is an aqueous suspension of magnesium hydroxide, Mg(OH)2(s)+2HCl(aq)=2H20(l)+MgCl2(aq), Which anatacid can consume the most stomach acid, 1.00g of NaHCO3,or 1.00g of Mg (OH)2?

Answers

Answer:

Milk of Magnesia would consume the most stomach acid at almost 3 times the amount as baking soda.

Explanation:

Baking Soda = NaHCO3(s)+HCl(aq)=H20(l)+CO2(g)

NaHCO3 Molar mass of 84.007 g/mol

0.012 Moles of NaHCO3 and since an equal ratio of HCl is required

we therefore neutralize 0.012 Moles of HCl

Milk of magnesia = Mg(OH)2(s)+2HCl(aq)=2H20(l)+MgCl2(aq)

Mg(OH)2(s) Molar mass: 58.3197 g/mol

0.017 Moles of Mg(OH)2 and the ratio is 2:1, so 2 moles for each 1 mole of Mg(OH)2, so we need 0.034 Moles of HCl

at what temperature would 2.10moles of N2 gas have a pressure of 1.25atm and fill a 25.0 L tank

Answers

Answer:

[tex]\large \boxed{\text{-92 $^{\circ}$C}}[/tex]

Explanation:

We can use the Ideal Gas Law and solve for T.

pV = nRT

Data  

p = 1.25 atm

V = 25.0 L

n = 2.10 mol

R = 0.082 06 L·atm·K⁻¹mol⁻¹

Calculations

1. Temperature in kelvins

[tex]\begin{array} {rcl}pV & = & nRT\\\text{1.25 atm} \times \text{25.0 L} & = & \rm\text{2.10 mol} \times 0.08206 \text{ L}\cdot\text{atm}\cdot\text{K}^{-1}\text{mol}^{-1} \times T\\31.25&=&0.09847T\text{ K}^{-1}\\T& = &\dfrac{31.25}{\text{0.098 47 K}^{-1}}\\\\& = &\text{181 K}\end{array}[/tex]

2. Temperature in degrees Celsius

[tex]\begin{array} {rcl}T & = & (181 - 273.15) \, ^{\circ}\text{C}\\& = & -92 \, ^{\circ}\text{C}\\\end{array}\\\text{The temperature of the gas is $\large \boxed{\mathbf{-92 \, ^{\circ}}\textbf{C}}$}[/tex]

Level 3- How is tooth decay related to pH?How can it be prevented?

Answers

Answer:

A lower pH of the mouth creates bad bacteria that eventually lead to decay of the tooth.  

It can be prevented by avoiding food that causes acidity.

Explanation:

Tooth decay is caused by the pH level in the mouth dropping below 5.5, meaning it is acidic. It can be prevented by brushing your teeth as toothpaste is an alkali which will neutralise the pH level in your mouth.

Hope this helps

Which phrase describes a feature of a Mercator projection? is least commonly used sizes most features to scale presents longitude lines as parallel shows most accurately near the prime meridian

QUICK

Answers

Answer:

  presents longitude lines as parallel

Explanation:

The Mercator projection shows longitude lines as  parallel, hence greatly distorts sizes and distances near the poles. A useful feature is that a course of constant bearing shows as a straight line.

Answer:

C.) presents longitude lines as parallel

Explanation:

Took it on E2020

A 500ml bottle contains 2.50 moles of gas. What is the new volume when the number of miles is increased 5.00 moles?

Answers

Answer:

The new volume is 1,000ml

Explanation:

Mathematically, we know that the number of moles per ml(volume) should be constant irrespective of the increase.

Initially, we have a volume of 500 ml and number of moles of 2.5 moles

The ratio of the number of moles to the volume is 2.5/500 = 0.005 mole/ml

Now, this is expected to remain the same even if we have an increment.

let’s call the new volume x

0.005 mol/ml = 5 moles/x ml

x = 5/0.005 = 1,000 ml

The energy from 0.015 moles of octane was used to heat 250 grams of water. The temperature of the water rose from 293.0 K to 371.2 K. What is the enthalpy of combustion of octane? The specific heat capacity of water is 4.18 J/K g.

A. -5448 kJ/mol
B. 1226 kJ/mol
C. -1226 kJ/mol
D. 293.25 kJ/mol

Answers

I would probably go with B but it also might be D

Answer:

A.) -5448 kJ/mol

Explanation:

I got it correct on founders edtell

Give some examples of how ultraviolet rays can be used

Answers

Answer:

One of the most common ways of producing UV light is passing an electric current through vaporized mercury or some other gas. This type of lamp is commonly used in tanning booths and for disinfecting surfaces. The lamps are also used in black lights that cause fluorescent paints and dyes to glow.Explanation:

NEED HELP
What is the temperature in kelvin of a gas if it is allowed to expand from 1.50 L to 4.50 L? The initial temperature is 10.0°C and pressure is constant throughout the change. Which equation should you use?

Answers

Answer:

Explanation:

V1/T1 =V2/T2    at constnant pressure

Answer:

c

Explanation:

The electron dot diagram for a neutral atom of chlorine (atomic number 17) is shown below.

Which of the following symbols represents a chlorine ion with a stable arrangement of eight valence electrons?
A. 35Cl1-
B. 35Cl2-
C. 35Cl1+
D. 35Cl

Answers

Answer:

A. 35Cl1-

Explanation:

Chlorine needs 1 more electron to have full octet thus will take 1 electron and possess a -1 charge.

Attempt 1 of 1
Which of the following is most likely to have a crystalline structure?
wood
rubber
glass
quartz

Answers

I’m not 100% positive but quartz would make sense

Answer: Quartz

Explanation: I looked it up ;)

An elements mass number is made up of the number of ____ in the nucleus.

protons and neutrons

electrons and neutrons

protons and electrons

atoms and molecules

Answers

Answer:

The answer is protons and nuetrons

Explanation:

What is the frequency of radiation emitted by a photon of light if the energy released during its transition to ground state is 3.611 × 10-15 joules? (Planck's constant is 6.626 × 10-34 joule seconds)

Answers

Answer:

5.449 x 10¹⁸ Hz

Explanation:

Energy (E) =Frequency (F) x Plancks constant (h)

F= 3.611x10⁻¹⁵J / 6.626 x 10⁻³⁴ Js⁻¹

F =5.449 x10¹⁸ s⁻¹ or 5.449 x 10¹⁸ Hz

In the following reaction, which are the products?

Mg + 2HCl —> H2 + MgCl2

If you could, please explain as well.​

Answers

Answer: H2 + MgCl2

Explanation: As they are on the right side of the equation/ are the products being made as a result of the reaction, they are the products.

pls help as soon I will give brainlist

Answers

Presence of water and oxygen

You could coat the iron with paint to prevent water coming in contact with it.

Answer:

1) Conditions necessary for rusting are:

a) Presence of atmospheric oxygen or air

b)Presence of water or moisture

2) For protecting the iron gate, we can paint it because the paint will coat it and protect it from atmospheric oxygen and water.

3) Magnesium, Carbon and Oxygen (MgCO₃)

In which orbitals would the valence electrons for carbon (C) be placed?

Answers

Answer: orbitals supernumerary

Explanation:

Answer:

both S orbital and p orbitals

Explanation:

took the exam got the question right.

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Dominique has a BMI of 35. What does the BMI indicate about Dominique? The Nth term of a sequence is 3n^2/2a) what is the second term of the sequence?b) what is the fifth term sequence?c) which term in the sequence is the first to have a value higher than 50?Please help let's consider the effectiveness of two antacids to illustrate how chemical calculations can be important in daily life. Baking soda NaHCO3, is often used as an antacid. It neutralizes excess hydrochloric acid sereted by stomach. The balanced equation for the reaction is NaHCO3(s)+HCl(aq)=H20(l)+CO2(g). Milk of magnesia, which is an aqueous suspension of magnesium hydroxide, Mg(OH)2(s)+2HCl(aq)=2H20(l)+MgCl2(aq), Which anatacid can consume the most stomach acid, 1.00g of NaHCO3,or 1.00g of Mg (OH)2? According to the calendar, it has been about 14 days since the beginning of the last lunarcycle. Usually, the moon is bright white, but today a dark red moon hangs in the night sky.What are you witnessing?A. a northern lightB. a solar eclipseC. a lunar perihelionD. a lunar eclipse What was the significance of D-day?a.) Mussolini began to lose power and control in Italy.b.) Germany was able to defeat the allies at the Battle of the Bulge. c.) Germany was no longer forced to fight on two fronts. d.) It was a key turning point in marked the beginning of the end of Hitlers reign. simplify 3^53^4a.) 320b. 3^9c.) 6^9d.) 3^20 Why is an overabundance of nutrients harmful to a water supply?A.It decreases the number and types of aquatic plants.B.It kills all aquatic plants.C.It sterilizes water.D.It causes excessive aquatic plant growth. The probability of drawing a pearl bead out of a bag of mixed beads is 2/3. What is the probability of drawing a bead which is not a pearl? "Donald is a 21-year-old full-time college student. During 2019, he earned $2,550 from a part-time job and $1,150 in interest income. If Donald is a dependent of his parents, what is his standard deduction amount Which polynomial is in standard form? At 25 C, what is the hydroxide ion concentration, [OH] , in an aqueous solution with a hydrogen ion concentration of [H+]=1.9109 M? 1. How many acetate ions are in the compound strontium acetate? ill give Brainliest!! F) 77.1%Thanks if you helped me Our company is growing fast, which always means changes and innovations. Because of this growth, the accounting department will be restructured. For the last five years, Paolo has served as chief manager with grace and dedication. However, because of the restructuring, Paolos position will no longer be needed. He will be working in the marketing department on the third floor, starting next Tuesday.In this message, the organizational pattern is used.Outlines give you a chance to organize your thinking before determining word choice and sentence structure. Which of the following will help you create a more effective outline?Avoid illustrations when supporting subpointsCombine subpoints whenever possiblePut the main idea in the titleUse one subpoint per main ideaUse evidence to support subpointsInclude 3 to 5 major components pls tell how should i return this now on shein - Cells control gene expression at which steps?transcription, translation, and the formation of the final proteininterphase, prophase, and metaphasemitosis, meiosis, and the formation of the final proteintranscription, mitosis, and DNA replication where has the population reached the carrying capacity in the Graph shown above? (need help quick!)A. point CB. point BC. point AD. point D calculate the middle between -4 and 5 If a large tree is 22 feet tall and a smaller tree is 3/4 of the larger tree's height, then how tall is thesmaller tree?