A museum wants to store their valuable documents, №14422482, 18.08.2021 17:46

Chemistry

A museum wants to store their valuable documents in cases that contain a gas that will protect the documents. The museum director should choose Choose... = chlorine gas, oxygen gas, a noble gas, a halogen. She should not choose one of the other gases because they are too Choose... = expensive, reactive, smelly, unreactive.

Step-by-step answer

P Answered by Master

9

For the first one you should choose chlorine gas, because it is a chemical gas that can be found in household cleaning products and can have an irritant smell. And for the second one you can choose unreactive. This is because noble gases are unreactive.

Chemistry

A museum wants to store their valuable documents in cases that contain a gas that will protect the documents. The museum director should choose Choose... = chlorine gas, oxygen gas, a noble gas, a halogen. She should not choose one of the other gases because they are too Choose... = expensive, reactive, smelly, unreactive.

Step-by-step answer

P Answered by Specialist

9

For the first one you should choose chlorine gas, because it is a chemical gas that can be found in household cleaning products and can have an irritant smell. And for the second one you can choose unreactive. This is because noble gases are unreactive.

Mathematics

Neil places £2000 in a bank account that pays 1.5% simple interest per year. How much interest will he earn in 6 years?

Step-by-step answer

P Answered by PhD

SI=(P*R*T)/100

P=2000

R=1.5

T=6

SI=(2000*1.5*6)/100

=(2000*9)/100

=180

Neil will earn interest of 180

Mathematics

The last time Robert filled up his car with gas, he paid $24.50 for 7 gallons. This time, he needs 15 gallons. If the price is the same, how much will he pay?

Step-by-step answer

P Answered by PhD

Cost of 7 gallons=$24.50

Cost of 1 gallon=24.50/7=3.5

Cost of 15 gallons=15*3.5=52.5

Cost of 15 gallons will be $52.5

Mathematics

A new school randomly assigns a six-character student code to every prospective student. The school uses the characters 1, 2, 3, 4, 5, X, Y, and Z. If none of the student codes contain a repeated character, what is the total number of codes that can be randomly assigned?

Step-by-step answer

P Answered by PhD

The total nom of code that can be used is equal to 5+3 = 8

Mathematics

In a parking lot, for every 8 cars there are 7 trucks. What is the ratio of cars to trucks? A)7 : 8 B)8 : 7 C)8 : 15 D)15 : 8

Step-by-step answer

P Answered by PhD

For every 8 cars there are 7 trucks

Therefore,

Cars:Truck=8:7

Answer is B)8:7

Mathematics

The value of a collectible coin can be represented by the equation y = 2 x + 15, where x represents its age in years and y represents its total value in dollars. What is the value of the coin after 19 years? $2 $23 $38 $53

Step-by-step answer

P Answered by PhD

y=2x+15

where y=Value of coin

x=Age in years

Value of coin after 19 years=2*19+15

=$53

Therefore, Value after 19 years=$53

Mathematics

A 4300-N force from a car s engines produces an acceleration of 3.3 m/s2. What is the mass of the car? A. 4300 kg B. 1300 kg C. 14,000 kg D. 390 kg

Step-by-step answer

P Answered by PhD

F=ma

where F=force

m=mass

a=acceleration

Here,

F=4300

a=3.3m/s2

m=F/a

=4300/3.3

=1303.03kg

Mathematics

Which number is the smallest? 4.4 ⋅ 10−5, 3.99 ⋅ 10−6, 2.6 ⋅ 102, 1.85 ⋅ 103

Step-by-step answer

P Answered by PhD

The answer is in the image

Mathematics

Mateo puts 6 gallons of gas into his car and pays 15$ what is the cost of 7 gallon of gas

Step-by-step answer

P Answered by PhD

Cost of 6 gallons =$15

Cost of 1 gallon =15/6

=$2.5

Cost of 7 gallons=$2.5 * 7

=$17.5

A museum wants to store their valuable documents in cases that contain a gas that will protect the documents.

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