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Vadim26 [7]
3 years ago
7

HELP

Chemistry
2 answers:
GarryVolchara [31]3 years ago
7 0
It’s B Have Ah Good Day
tankabanditka [31]3 years ago
6 0
It is B!! Good luck on you assignment
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Julli [10]
There are 6.21371192 miles in 1mil cm
5 0
3 years ago
These four steps are important when setting a goal, but they are in the wrong order.what is the correct order of steps from star
ankoles [38]
The first step is to establish a goal and write it down. This adds commitment and you are declaring your intentions.
The second step is write down your daily plan of action. A plan without action is as useless if you had never written the goal at all. 
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The final step is to act on that plan. You must take action now that you have all the tools. 

5 0
3 years ago
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PH is 7.45. Calculate value of [H3O+] and [OH-]
lana66690 [7]

Answer:

The answer is (H30+) =3,55e-8M and (OH-)=2,82e-7M

Explanation:

We use the formulas:

pH= - log(H30+)  and Kwater=(H30+)x(OH-)

pH= - log(H30+)  ----< (H30+)= antilog- pH=antilog- 7,45=3,55E-8M

Kwater=(H30+)x(OH-)

(OH-)=Kwater/(H30+)= 1,00e-14/3,55e-8 = 2,82e-7

8 0
3 years ago
The escape velocity from Earth's surface is 1.12 x 104 meters per second. At this speed, how many kilometers would a
Sati [7]

Answer:

2016 km

Explanation:

The escape velocity from Earth's surface is 1.12\times 10^4\ m/s.

We need to find how many kilometers would a  rocket travel in three minutes. It is a concept based on the definition of speed of an object.

Speed = distance per unit time

1 hour = 60 minutes

⇒ 3 minutes = 0.05 hour

1 m/s = 3.6 km/h

11200 m/s = 40320 km/h

So,

\text{distance}, d=v\times t\\\\d=40320\ km/h \times 0.05\ h\\\\d=2016\ km

Hence, a rocket will travel 2016 km in 3 minutes.

6 0
3 years ago
A sealed, insulated calorimeter contains water at 310 K. The surrounding air temperature is 298 K, and the water inside the calo
serious [3.7K]
D is the answer, I believe.

An isolated system is one that allows neither heat or matter to enter or exit, and since the liquid remained the same temperature, one can conclude that neither energy nor matter is passing through.
7 0
3 years ago
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