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elena55 [62]
3 years ago
6

Question 2

Chemistry
2 answers:
Usimov [2.4K]3 years ago
4 0

Answer:

A

Explanation:

Ugo [173]3 years ago
3 0

Answer:a

Explanation:cuz ik  this

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Chemical reactions can be detected by precipitation of a _____ from a solution.
RideAnS [48]

Answer: solid

Explanation: Chemical reactions are those which involve rearrangement of atoms.

Chemical changes are accompanied by following changes:

1) Absorption or release of heat

2) Change in color

3) Formation of gas bubbles

4) Formation of a solid product called as precipitate

Example of formation of precipitate or solid in chemical reaction:2AgNO_3(aq)+BaCl_2(aq)\rightarrow 2AgCl(s)+Ba(NO_3)_2(aq)


7 0
3 years ago
Read 2 more answers
Is color change a physical or chemical change?
bagirrra123 [75]
It's a chemical change because it's changing the object's property. 
3 0
3 years ago
The Top Thrill Dragster, a rollercoaster at Cedar Point in Ohio, soars through the air at 176ft/sec. How fast is this in mph?​
scoray [572]

Answer:

120mph

Explanation:

Google

divide the speed value by 1.467

or

176 times 60 second in a minute times 60 minutes in an hour

than divide by 5280 the amount of feet in a mile

7 0
3 years ago
The equilibrium constant for the chemical equation is Kp = 5.23 at 191 °C. Calculate the value of the Kc for the reaction at 191
Lapatulllka [165]
To convert from Kp to Kc, you need this formula---> Kp= Kc (RT)^Δn, where Δn= gas moles of product- gas moles of reactants. since you did not give a reaction formula, I can't calculate Δn. but all once you find it out. just plug it. 

Kp= Kc (RT)^Δn------------------> Kc= Kp/[(RT)^Δn]
 Kp= 5.23
R= 0.0821
T= 191 C= 464 K
Δn= ?

Kc= 5.23/ (0.0821 x 464)^Δn= ???

7 0
3 years ago
State three reasons why an airborne pollutant might be deposited close to its source
Oksana_A [137]

Answer:

No wind

Rain

I only came up with 2 I couldnt think of a third one

6 0
3 years ago
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