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Afina-wow [57]
3 years ago
14

What are atoms made up of

Chemistry
2 answers:
jeka943 years ago
6 0
Protons, neutrons, and elections ( don’t know if it’s multiple choice but hope this helps)
faltersainse [42]3 years ago
3 0

Answer:

They are made up of electrons, neutrons and protons

Explanation:

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The elementary reaction 2H20(g)<--->2H2(g)+O2(g) proceeds at a certain temperature until the partial pressures of H2O, H2,
olya-2409 [2.1K]

Answer:

4.9 x 10⁻⁶.

Explanation:

  • For the reaction:

<em>2H₂O(g) ⇄ 2H₂(g) + O₂(g),</em>

'

P of H₂ = 0.002 atm, P of O₂ = 0.006 atm, and P of H₂O = 0.07 atm.

∴ The equilibrium constant (Kp) = (P of H₂)²(P of O₂)/(P of H₂O)² = (0.002 atm)²(0.006 atm)/(0.07 atm)² = 4.9 x 10⁻⁶.

3 0
4 years ago
How do planets with larger masses apply greater gravitational forces on objects compared to planets with less mass?
natta225 [31]

Answer:

more massive objects will attract each other with a greater gravitational force. So as the mass of either object increases, the force of gravitational attraction between them also increases.

4 0
3 years ago
Read 2 more answers
What is the difference between atom and compound? explain.
shutvik [7]
An atom is the simplest particle that exists and retains the property of the element. A compound is made up of two or more elements chemically combined.
6 0
3 years ago
The Environmental Protection Agency has determined that safe drinking
dmitriy555 [2]

Answer:

b) \bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}

The confidence interval for this case is given (6.21, 6.59)

So we can conclude at 95% of confidence that the true mean for the PH concentration is between 6.21 and 6.59 moles per liter

c) Since the confidence interval not contains the value 7 we reject the hypothesis that the true mean is equal to 7. And the same result was obtained with the t test for the true mean.

Explanation:

We assume that part a is test the claim. And we can conduct the following hypothesis test:

Null hypothesis: \mu =7

Alternative hypothesis \mu \neq 7

The statistic is to check this hypothesi is given by:

t = \frac{\bar X -\mu}{\frac{s}{\sqrt{n}}}

We know the following info from the problem:

\bar X = 6.4 , s=0.5, n =30

Replacing we got:

t = \frac{6.4-7}{\frac{0.5}{\sqrt{30}}}= -6.573

And the p value would be:

p_v= 2*P(Z

Since the p value is very low compared to the significance assumed of 0.05 we have enough evidence to reject the null hypothesis that the true mean is equal to 7 moles/liter

Part b

The confidence interval is given by:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}

The confidence interval for this case is given (6.21, 6.59)

So we can conclude at 95% of confidence that the true mean for the PH concentration is between 6.21 and 6.59 moles per liter

Part c

Since the confidence interval not contains the value 7 we reject the hypothesis that the true mean is equal to 7. And the same result was obtained with the t test for the true mean.

6 0
3 years ago
Both balloons have a temperature of 25.0°C, contain
Klio2033 [76]

DAnswer:

Explanation:

7 0
3 years ago
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