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Scilla [17]
4 years ago
5

Think about the properties of waves. Share your observations in the discussion below

SAT
1 answer:
Sophie [7]4 years ago
8 0
Depends on what type
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A sample of pure lithium nitrate contains 7. 99% lithium by mass. What is the % lithium by mass in a sample of pure lithium nitr
Shalnov [3]

Considering the definition of percentage by mass, the sample of pure lithium nitrate contains 7.99% lithium by mass.

<h3>Definition of percentage by mass</h3>

The percentage by mass expresses the concentration and indicates the amount of mass of solute present in 100 grams of solution.

In other words, the percentage by mass of a component of the solution is defined as the ratio of the mass of the solute to the mass of the solution, expressed as a percentage.

The percentage by mass is calculated as the mass of the solute divided by the mass of the solution, the result of which is multiplied by 100 to give a percentage. This is:

percentage by mass=\frac{mass of solute}{mass of solution}x100

<h3>This case</h3>

Because percent by mass indicates the ratio of solute to solution based on mass, if the sample has twice the mass of the first sample, the ratio remains constant.

So the percentage by mass is the same.

That is, the sample of pure lithium nitrate contains 7.99% lithium by mass.

.

Learn more about percent by mass:

brainly.com/question/18646836?referrer=searchResults

3 0
3 years ago
What is the purpose of paragraph eight?
____ [38]

Answer:

To Summarize The Conclusions of the report

Explanation:

4 0
3 years ago
a user is implementing security on a small office network. which two actions would provide the minimum security requirements for
Anastaziya [24]

Implementation of firewall

installation of anti-virus software

3 0
2 years ago
31. All the following are effective ways of preparing for an Interview EXCEPT
frez [133]
Memorising interviews questions and answers because you don’t want to sound too rehearsed
8 0
3 years ago
Read 2 more answers
Satya, nina, and iana each have a 3/4 chance of going to café georgia for an afternoon coffee at 1:00pm. Bohan will only go to c
larisa86 [58]

Using the binomial distribution, it is found that there is a 0.9844 = 98.44% probability that bohan goes to café georgia for a coffee today.

For each friend, there are only two possible outcomes, either they go to the cafe, or they do not. The probability of a friend going to the cafe is independent of any other friend, hence, the binomial distribution is used to solve this question.

<h3>What is the binomial distribution formula?</h3>

The formula is:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

C_{n,x} = \frac{n!}{x!(n-x)!}

The parameters are:

  • x is the number of successes.
  • n is the number of trials.
  • p is the probability of a success on a single trial.

In this problem:

  • There are 3 friends, hence n = 3.
  • They all go to the cafe with a 3/4 probability, hence p = 3/4 = 0.75.

The probability at least one goes is:

P(X \geq 1) = 1 - P(X = 0)

In which:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 0) = C_{3,0}.(0.75)^{0}.(0.25)^{3} = 0.0156

Then:

P(X \geq 1) = 1 - P(X = 0) = 1 - 0.0156 = 0.9844

0.9844 = 98.44% probability that bohan goes to café georgia for a coffee today.

You can learn more about the binomial distribution at brainly.com/question/24863377

3 0
3 years ago
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