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tatuchka [14]
2 years ago
13

Which of the following describes scientists?

Chemistry
2 answers:
Serga [27]2 years ago
4 0

Answer:

C. People with perfect understanding of science

Explanation:

Similar personalities, different backgrounds, and only one perspective are just traits of people.

Perfect understanding of science is relating to a scientist. Scientists have high knowledge of science.

jasenka [17]2 years ago
3 0

Answer:C.people with perfect understanding of science.

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What method is used for chaff from grain<br>​
Marta_Voda [28]

Answer:

Winnowing

Explanation:

Wind blows the lighter(in terms of mass) chaff from the whole grains,which are heavier(in terms of mass)

4 0
2 years ago
A 5.0 L flask contains 0.60 g of 02 at a temperature of 22*C, what is the pressure inside the flask?
Kruka [31]

Answer:

The pressure inside the flask is 0,09 atm

Explanation:

We calculate the number of moles of O2, we convert the Temperature into unit KELVIN and use the formula of the ideal gases to calculate the pressure:

Weight 1 mol of 02= 15,999g x2= 32g

32g---1mol 02

0,60g---x=(0,60gx1mol O2)/32g= 0,019mol O2

T(K)=273+22=295K

PV=nRT

Px5.0l= 0,019mol x 0,082 lxatm/Kxmolx295 K

P=(0,019mol x 0,082 lxatm/Kxmolx295 K)/5.0l

P=0,09atm

4 0
2 years ago
Fred can create 20 animal balloons every 15 minutes. solve ratio table
DerKrebs [107]

The number of animal balloons created in 15 minutes = 20

The number of animal balloons created in 1 minute = \frac{20}{15}

So, the number of animal balloons created in 6 minutes = \frac{20}{15}\times 6 = 8

And, the number of animal balloons created in 45 minutes = \frac{20}{15}\times 45 = 60

So, the solved ratio table will be:

15.20

6.8

45.60



3 0
3 years ago
A swimmer can inhale exactly 0.25 moles of air before diving underwater. What will be the total volume of the swimmer’s lungs at
Crank

Answer:

6.14 L

Explanation:

To answer this question we'll<u> use the PV=nRT formula</u>, where:

  • P = 0.97 atm
  • V = ?
  • n = 0.25 mol
  • R = 0.082 atm·L·mol⁻¹·K⁻¹
  • T = 17.6 °C ⇒ 17.6 + 273.16 = 209.76 K

We <u>input the data</u>:

  • 0.97 atm * V = 0.25 mol * 0.082 atm·L·mol⁻¹·K⁻¹ * 209.76 K

And <u>solve for V</u>:

  • V = 6.14 L
6 0
3 years ago
Need help on this ASAP !!!!
JulijaS [17]

Answer:

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O.

Explanation:

To balance the equation, you should apply the law of conservation of mass for the equations.

The law of conservation of mass states that the no. of each atom is equal in both sides (reactants and products).

Hydrocarbon is burned in oxygen to produce CO₂ and H₂O.

So, the given equation is balanced as:

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O.

that 1.0 mole of C₃H₈ is burned in 5.0 moles of O₂ to produce 3.0 moles of CO₂ and 4.0 moles of H₂O.

The no. of all atoms is the same in both of reactants and products side.

C (3), O (10), and H (8).

3 0
2 years ago
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