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suter [353]
2 years ago
6

A simulation at the nuclear level has nuclei with 20 protons and 100 neutrons. Alpha particles can get very close to the nuclei.

Chemistry
1 answer:
SIZIF [17.4K]2 years ago
6 0

Answer:

Protons repel the particles while neutrons do now

Explanation:

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Aerosol cans have a label that warns the user not to use them above a certain temperature and not to dispose of them by incinera
Alex73 [517]

Answer:

1.40 atm

Explanation:

To answer this question we can use<em> Gay-Lussac's law</em>, which states:

  • P₁T₂=P₂T₁

When volume and number of moles remain constant.

  • P₁ = 1.11 atm
  • T₁ = 23°C ⇒ 23+273.16 = 296.16 K
  • T₂ = Boiling point of water = 100 °C ⇒ 100+273.16 = 373.16 K
  • P₂ = ?

We <u>put the known data in the equation and solve for P₂</u>:

  • 1.11 atm * 373.16 K = P₂ * 296.16 K
  • P₂ = 1.40 atm
4 0
2 years ago
What is a logical way that you could begin to investigate why your tire had low air pressure? Look to see if there is a hole in
MrRissso [65]

Answer:

Any of the answers given will work

Explanation:

I literally just did it.

7 0
3 years ago
Read 2 more answers
Please can you help me with this ​
vlabodo [156]

Answer:

C. Pulley.

Explanation:

8 0
3 years ago
The p-value of a statistical test depends on all of the following, except:
vaieri [72.5K]

Answer:

The correct option is e.

Explanation:

p-value is the probability value for a given statistical model, the probability that, when the null hypothesis is true.

For two two samples the formula of test statistics is

t=\frac{(\overline{x}_1-\overline{x}_2)-(\mu_1-\mu_2)}{\sqrt{\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}}}

where,

\overline{x} is sample mean

\mu is population mean.

s is standard deviation.

n is sample size.

Variance is the square of standard deviation.

It means variance, mean, numbers of samples is used in calculation of p-value.

Degree of freedom define the shape of the t-distribution that your t-test uses to calculate the p-value.

d.f.=n_1+n_2-2

p-value of a statistical test depends on all of the following, except median.

Therefore the correct option is e.

4 0
3 years ago
What is the empirical formula of the compound that is 25.3% magnesium and 74.7% chlorine
Margarita [4]

Answer: MgCl_2

Explanation:

25.3% Mg

74.7% Cl

First step: change % to g

25.3g Mg

74.7g Cl

Second step: calculate g/mol of each compound. You can do this by using the atomic mass.

25.3gMg(\frac{1mol}{24.30g})=1.04mol

74.7gCl(\frac{1mol}{35.45g} )=2.11mol

Third step: determine the lowest number and divide everything by it. Of the result, extract whole number only.

Mg=\frac{1.04}{1.04} =1

Cl=\frac{2.11}{1.04}=2

Fourth step: Write each compound with their respective number below.

This empirical formula should be: MgCl_2

4 0
3 years ago
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