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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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if an unknown gas has one third the root mean squarevspeed of H2 at 300 K, what is the molar mass of the gas?​
Viefleur [7K]

The molar mass of the gas : 18 x 10⁻³ kg/mol

<h3>Further explanation</h3>

Given

An unknown gas has one third the root mean square speed of H2 at 300 K

Required

the molar mass of the gas

Solution

Average velocities of gases can be expressed as root-mean-square (V rms)  

\large {\boxed {\bold {v_ {rms} = \sqrt {\dfrac {3RT} {Mm}}}}

T = temperature, Mm = molar mass of the gas particles  , kg/mol

R = gas constant 8,314 J / mol K  

v rms An unknown gas = 1/3 v rms H₂

v rms H₂ :

\tt v_{rms}=\sqrt{\dfrac{3\times 8.314\times 300}{2.10^{-3}} }\\\\v_{rms}=1934.22

V rms of unknown gas =

\tt \dfrac{1}{3}\times 1934.22=644.74

\tt 644.74^2=\dfrac{3\times 8.314\times 300}{M_{gas}}\\\\M_{gas}=18\times 10^{-3}~kg/mol

7 0
3 years ago
How many formula units of silver fluoride, AgF, are equal to 42.15 g f this substance?
s2008m [1.1K]

Answer:

1.99 x 10²³ formula units

Explanation:

Given parameters:

Mass of AgF  = 42.15g

Unknown:

The amount of formula units

Solution:

To solve this problem, we set out by find the number of moles in this compound from the given mass.

   Number of moles  = \frac{mass}{molar mass}

molar mass of AgF  = 107.9 + 19  = 126.9g/mol

  Number of moles  = \frac{42.15}{126.9}   = 0.33 moles

       1 mole of a substance =  6.02 x 10²³ formula units

         0.33 moles of AgF  = 0.33 x 6.02 x 10²³  = 1.99 x 10²³ formula units

7 0
3 years ago
How many molecules are in 6.20 moles of CaCO3?
DedPeter [7]

Answer:

Moles to Grams caco3

1 mole is equal to 1 moles CaCO3, or 100.0869 grams.

6 0
3 years ago
Read 2 more answers
If ice is warmed and becomes a liquid, which type of process is it?
ser-zykov [4K]
If ice is warmed and becomes a liquid, the process is endothermic.

The process requires heat in order to proceed. If ice stays in a very cold place, it will not melt unless it's heated. If ice is placed outside where it melts on its own, it gets the heat from the surroundings.
4 0
3 years ago
Read 2 more answers
To answer this question, you will need to write the balanced equation and set up a BCA table. Using appropriate rounding rules,
Elenna [48]

Water decomposes when electrolyzed to produce hydrogen and oxygen gas. If 2.5 grams of water were decomposed 1.04 grams of oxygen will be formed.

BCA table:

2H_{2}O ⇒ H_{2} + O_{2}

B  0.13        0 + 0

C  -0.13      0.065 + 0.065

A  0             0.065

Explanation:

Balanced equation for water decomposition into hydrogen and oxygen gases

   2H_{2}O ⇒ H_{2} + O_{2}

B  0.13        0 + 0

C  -0.13      0.065 + 0.065

A  0             0.065

Number of moles of water = \frac{mass}{atomic mass of 1 mole}

mass = 2.5 grams

atomic mass= 18 grams

number of moles can be known by putting the values in the formula,

n = \frac{2.5}{18}

  = 0.13 moles

2 moles of water gives one mole of oxygen on decomposition

so, 0.13 moles of water will give x moles of oxygen on decompsition

\frac{1}{2} = \frac{x}{0.13}

x = 0.065 moles of oxygen will be formed.

moles to gram will be calculated as

mass =number of moles x atomic mass

        = 0.065 x 16

         = 1.04 grams of oxygen.

7 0
4 years ago
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