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Charra [1.4K]
4 years ago
12

Dangers in your home: knowing how to handle household products containing hazardous materials or chemicals can reduce the risk o

f injury. It is important to store household chemicals where children cannot access them. Remember that common products such as aerosol cans of hair spray and deodorant, nail polish and nail polish remover, toilet bowl cleaners and furniture polishes are hazardous materials. Other hazardous household products include: ~Cleaning products ~Automotive products like antifreeze or motor oil ~Items like batteries, mercury thermometers and florescent light bulbs ~Flammable products: kerosene, home heating oil, propane tanks and lighter fluid ~Workshop or painting supplies: paint thinners and turpentine ~Herbicides and insecticides Your parents have purchased some insecticide to kill ants that keep showing up in the kitchen and pantry. The box has a small tear in it and your father repackages the insecticide in a plastic container and stores it on a high shelf in the pantry. Is this a reasonable practice? Explain. A) Yes; the container cannot tear or break. B) No; insecticides should never be brought into a home. C) No; the container is unlabeled and may be mistaken for food. D) Yes; the container is intact and stored out of reach of children.
Chemistry
2 answers:
Naya [18.7K]4 years ago
4 0
The answer would be either b or c because they are both correct
IgorLugansk [536]4 years ago
3 0

Answer: C) No; the container is unlabeled and may be mistaken for food.

Explanation: The harmful or flammable chemicals such as insecticides, toilet cleaners , mercury thermometers  must be stored in glass bottles with tight caps and put on high shelf with a cross symbol with its name labeled on it.

As this will help to recognize the substance by each individual of the family. Thus cannot be mistaken for something else.  

Also such harmful substances must not be kept in pantries.

Hence the correct option is C.





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svlad2 [7]
It is not a chemical change because a chemical change is when the substance changes to a whole new substance (ex rust on a car) ex2(fire burning wood) it’s not the same substance) it is a physical change because it’s still water basically (ex: like melting ice, it’s still ice( not a whole different substance)
7 0
4 years ago
g Ammonia has been studied as an alternative "clean" fuel for internal combustion engines, since its reaction with oxygen produc
Gala2k [10]

\text{Ammonia has been studied as an alternative "clean" fuel for internal combustion}

\text{engines, since its reaction with oxygen produces only nitrogen and water vapor,}

\text{and in the liquid form it is easily transported. An industrial chemist studying this}

\text{reaction fills a} \ \mathbf{100 \  L }\ \text{tank with} \ \mathbf{8.6 \ mol} \ \text{of ammonia gas and} \ \mathbf{28 \ mol} \ \  \text{of oxygen gas, }

\text{to be} \  \mathbf{2.6\  mol} \ .\ \text{Calculate the concentration equilibrium constant for the combustion of}

\text{ammonia at the final temperature of the mixture. Round your answer to  2 significant digits.}

Answer:

Explanation:

From the correct question above:

The reaction can be represented as:

\mathbf{4 NH_3_{(g)}+ 3O_{2(g)} \iff 2N_{2(g)}+ 6H_2O_{(g)} }

From the above reaction; the ICE table can be represented as:

                    \mathbf{4 NH_3_{(g)}+ 3O_{2(g)} \iff 2N_{2(g)}+ 6H_2O_{(g)} }

I (mol/L)     0.086            0.28                 0              0

C                   -4x                -3x               +2x           +6x

E                 0.086 - 4x     0.28 - 3x      +2x             +6x

At equilibrium;

The water vapor = \dfrac{2.6 \ mol}{100 \ L} = 6x

x = \dfrac{2.6}{100} \times \dfrac{1}{6}

x = 0.00433

\text{equilibrium constant}  ({k_c}) =  \dfrac{ [N_2]^2 [H_2O]^6 }{ [[NH_3]^4] [O_2]^3 }

\implies \dfrac{(2x)^2 (6x)^6}{(0.086-4x)^4\times (0.28-3x)^3} \\ \\

Replacing the value of x, we have:

K_c = \dfrac{4 \times 46,656 \times x^8}{(0.086-4x)^4\times (0.28 -3x)^3} \\ \\ K_c = \dfrac{4 \times 46656 \times (0.00433)^8}{(0.06868)^4(0.26701)^3} \\ \\ K_c = \mathbf{5.4446 \times 10^{-8}}

K_c = \mathbf{5.5 \times 10^{-8} \ to  \ 2 \ significant \ figures}

5 0
3 years ago
How many hydrogen atoms are in 35.0 grams of hydrogen gas? How many hydrogen atoms are in 35.0 grams of hydrogen gas? 4.25 × 102
Ede4ka [16]

Answer: 2.12\times 10^{25} atoms of hydrogen are there in

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Explanation:

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To calculate the moles, we use the equation:

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1 mole of hydrogen (H_2) = 2\times 6.023\times 10^{23}=12.05\times 10^{23} atoms

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There are 2.12\times 10^{25} atoms of hydrogen are there in

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8 0
3 years ago
Calculate the molality of a solution formed by adding 6.30 g NH4CL to 15.7 g of water
babymother [125]

Answer:

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Explanation:

Given data:

Mass of NH₄Cl = 6.30 g

Mass of water = 15.7 g (15.7/1000 =0.016 kg)

Molality = ?

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Formula of molality:

Molality = Moles of solute / mass of solvent in gram

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Now we will calculate the molality.

Molality = Moles of solute / mass of solvent in gram

Molality =  0.12 mol / 0.016 kg

Molality = 7.5 m

or        (m=mol/kg)

Molality = 7.5 mol/kg

6 0
3 years ago
C55H72MgN4O5. How many atoms are in this molecule?
Bas_tet [7]
There are 137 atoms in this molecule. C55 + H72 = 127. 127 + Mg (one atom of magnesium = 128. 128 + N4 = 132. 132 + O5 = 137.
5 0
3 years ago
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