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grigory [225]
3 years ago
15

36cm/s to miles per hour (mph)

Chemistry
1 answer:
Ipatiy [6.2K]3 years ago
7 0

Answer:

0.8 mph

Explanation:

36 cm         1 m              1 km          0.62 mi       60 sec       60 min         0.8 mi

---------- X ------------ X ------------- X -------------- X ------------ X -------------- =  -----------

  sec         100 cm      1000 m          1 km             min            1 Hr              Hr

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If an object is travelling 25.0 meters/second, how far will it travel in 45 minutes?
Misha Larkins [42]
  • Speed=25m/s
  • Time=45min=(45×60)s=2700s

\\ \rm\longmapsto Distance=Speed(Time)

\\ \rm\longmapsto Distance=25(2700)

\\ \rm\longmapsto Distance=67500m

4 0
3 years ago
Neutralization reactions typically occur between a strong acid and a strong base to produce what?
lara [203]
Salt +  water

Example :

acid        base     salt       water
  ↓             ↓          ↓           ↓
HCl <span> + NaOH = NaCl + H</span>₂<span>O

</span>Hydrochloric Acid + Sodium Hydroxide = Sodium Chloride + Water

hope this helps!
4 0
4 years ago
To a 25.00 mL volumetric flask, a lab technician adds a 0.250 g sample of a weak monoprotic acid, HA , and dilutes to the mark w
Basile [38]

Answer: The number of moles of the weak acid in the solution is 0.00396

Explanation:

To calculate the number of moles for given molarity, we use the equation:

\text{Molarity of the solution}=\frac{\text{Moles of solute}}{\text{Volume of solution (in L)}}      

a) {\text{Moles of}KOH=0.0846M\times 0.04683L=0.00396mol

The balanced chemical reaction is:

HA+KOH\rightarrow KA+H_2O  

1 mole of base uses = 1 mole of HA  

0.00396  moles of base use = \frac{1}{1}\times 0.00396=0.00396 moles of HA  

Thus the number of moles of the weak acid in the solution is 0.00396

6 0
3 years ago
How many valence electrons does a fluorine atom contain?<br> a. 2<br> b. 5<br> c. 7<br> d. 9
juin [17]

F---atomic number 9---1s2 2s2 2p5 -----7 electrons

6 0
3 years ago
When burned, coal releases _____. oxygen carbon dioxide methane sulfur nitrogen oxide?
Rus_ich [418]
Coal releases carbon dioxide when burned. The reaction looks like this:
C(s)+O₂(g)→CO₂(g) 

I hope this helps.  Let me know in the comments if anything is unclear.
6 0
4 years ago
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