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leonid [27]
3 years ago
5

HELPP PLEASEE this is science btw!!

Chemistry
1 answer:
musickatia [10]3 years ago
3 0

Answer:

5 environmental factors are

- Exposure to hazardous substances in the air, water, soil, and food.

- Natural and technological disasters.

- Climate change.

- Occupational hazards.

- The built environment.

Explanation:

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Which characteristic is not a periodic trend?
Taya2010 [7]

Answer:

D

Explanation:

7 0
4 years ago
How many moles of H2O are produced when 64.0 g C2H2 burns in oxygen
Gnoma [55]
The balanced chemical reaction will be: 

C2H2 + 5/2O2 = 2CO2 + H2O

We are given the amount of C2H2 being burned. This will be our starting point.

64.0 g C2H2 (1 mol C2H2 / 26.02 g C2H2) (1 mol H2O/1mol C2H2) ( 18.02 g H2O/1mol H2O) = 44.32 g H2O.

Thus, the answer is 44.32 g H2O.
6 0
3 years ago
When a screwdriver is used to try a paint can lid off a paint can, it is a class level because
Studentka2010 [4]
Well it whould be considered a simple mashine a leaver hope this helps
8 0
3 years ago
Which of these ions will spontaneously react with ni(s) in solution? which of these ions will spontaneously react with in soluti
pickupchik [31]
Nickel metal will react spontaneously with the aqueous lead solution [Pb2+(aq)]. 

Oxidation is a chemical reaction involving the loss of electrons. In the reactivity series of metals, chromium, barium, and lithium are more reactive or more easily oxidized than nickel. 

In the given problem, because nickel is in its elemental (solid metal) form, for it to react with the solution, it will have to be converted into its cationic form (which is positively-charged) by losing electrons. However, if the solution that nickel is reacted with is more easily oxidized compared to nickel, then the reaction will not be spontaneous because nickel is stable in this case. 

On the other hand, if nickel is immersed in a solution of a metal which is more stable than it is, such as lead, nickel will be oxidized and lose its electrons to the more stable metal. The more stable metal in solution will accept the lost electrons of nickel and form a solid deposit, while nickel will be in its ionic form in solution. 

Below is a reaction between nickel metal and aqueous lead nitrate solution. 


6 0
3 years ago
Which compound 2-bromo-2-methylpropane or 2-chloro-2-methylpropane?
AURORKA [14]
The 2-bromo-1-chloro-2-methylpropane molecule contains a total of 14 atom(s). There are 4 Carbon atom(s), 8 Hydrogen atom(s), 1 Chlorine atom(s) and 1 Bromine atom(s). A chemical formula of 2-bromo-1-chloro-2-methylpropane can therefore be written as C4H8BrCl. Is it also commonly called as Propane.
6 0
4 years ago
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