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Volgvan
3 years ago
13

is nothing something and if so or if not how, is water wet, if 2 people dropped a piece of bread on the opposite sides of the ea

rth at the same time does the world temporarily become a sandwich...?
Chemistry
1 answer:
Zepler [3.9K]3 years ago
3 0

Answer:

technically no

Explanation:

there are 2 definitions of sandwich. one is the food one: 'an item of food consisting of two pieces of bread with meat, cheese, or other filling between them, eaten as a light meal.' the earth isn't food so it can't be a sandwich. the 2nd definition is the verb : 'insert or squeeze (someone or something) between two other people or things, typically in a restricted space or so as to be uncomfortable.' by dropping a piece of bread on the opposite sides of the earth at the same time won't make the earth squished or uncomfortable, so no it can't be a sandwich ( or be sandwiched)

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Consider the neutralization reaction 2HNO3(aq) + Ba(OH)2 ( aq ) ⟶ 2H2O ( l ) + Ba ( NO3)2 ( aq ). A 0.125 L sample of an unknown
Mademuasel [1]

Answer:

The concentration of the HNO3 solution is 0.103 M

Explanation:

Step 1: Data given

Volume of the unknow HNO3 sample = 0.125 L

Volume of 0.200 M Ba(OH)2 = 32.3 mL = 0.0323 L

Step 2: The balanced equation

2HNO3(aq) + Ba(OH)2 ( aq ) ⟶ 2H2O ( l ) + Ba( NO3)2 (aq)

Step 3:

n2*C1*V1 = n1*C2*V2

⇒ n2 = the number of moles of Ba(OH)2 = 1

⇒ C1 = the concentration of HNO3 = TO BE DETERMINED

⇒ V1 = the volume of the HNO3 solution = 0.125 L

⇒ n1 = the number of moles of HNO3 = 2

⇒ C2 = the concentration of Ba(OH)2 = 0.200 M

⇒ V2 = the volume of Ba(OH)2 = 0.0323 L

1*C1 * 0.125 L = 2*0.200M * 0.0323 L

C1 = (2*0.200*0.0323)/0.125

C1 = 0.103 M

The concentration of the HNO3 solution is 0.103 M

5 0
3 years ago
The total daily water use in Mexico is 88 billion m ^ 3 the Mexican population is 127.5 million people. What is the per capita d
eimsori [14]

This problem is providing the water consumption in Mexico as 88 billion m³ and the Mexican population as 127.5 million people so that the per capita daily water use is required and found to be 690 m³/person according to the following:

<h3>Dimensional analysis:</h3><h3 />

In chemistry, the use of dimensional analysis and units conversion covers a wide range of calculations, necessary to report a result in a specific way. In this case, we see this problem asks for the consumption of water, in cubic meters, that each person does every day.

Thus, with a view to calculating this, one must first write this values without any million or billion system as shown below:

88billion\ m^3=88.000.000.000 m^3 =8.8x10^{10}m^3\\\\127.5million\ people=127.500.000 people=1.275x10^8people

This means we can get the per capita daily water use by simply dividing these two:

\frac{8.8x10^{10}m^3}{1.275x10^8people}\\\\= 690\frac{m^3}{person}

Learn more about dimensional analysis: brainly.com/question/10874167

8 0
3 years ago
In a chemical reaction, _____________________ causes the reaction to stop by running out.
Reil [10]

Answer:

Limiting reactants

Explanation:

Because fi you slowly limit reactants it will stop eventually the reaction itself

6 0
3 years ago
Iron has a known density of 7.87 g/cm3. What would be the mass of a 2.5<br> cm3 piece of iron?
Fudgin [204]
If i am not mistaken ,

density = mass / volume

density = 7.87 g/cm3
volume = 2.5 cm3

thus ,
mass = density x volume

7.87 g/cm3 x 2.5 cm3 = 19.675 g
5 0
3 years ago
What could possibly increase genetic variation indirectly
iren2701 [21]
Probably toxins in the environment, new habitats, or changes in the food supply.

I hope this was somewhat helpful!
6 0
4 years ago
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