Chemistry High School

5. If all the particles in a material are made up of
several smaller particles, and every larger particle
is identical, is the material a pure substance or
not? Explain your reasoning.

Answers

Answer 1

Answer:

No. Because a pure substance, no matter if an element, compound, it can only contain one kind of particle .

Explanation:

Related Questions

How many grams are there in 3.4 x 10^24 atoms of He?

Group of answer choices
2.07
5.7 g
0.57 g
20.7

Answers

Given :

Number of He atoms, [tex]n = 3.4\times 10^{24}[/tex] atoms.

To Find :

How many grams are their in given number of He atoms.

Solution :

We know, molecular mass of He is 4 g. It means that their are [tex]6.022 \times 10^{23}[/tex] atoms in 4 g of He.

Let, number of gram He in [tex]3.4\times 10^{24}[/tex] atoms is x , so :

[tex]x = \dfrac{3.4\times 10^{24}}{6.022\times 10^{23}}\times 4\\\\x = $$22.58\ g[/tex]

Therefore, grams of He atoms is 22.58 g .

2) Which liberates the most energy?
A) F(g) + e ➡️ F-(g)
B) N(g) +e- ➡️ N-(g)
C) O(g) +e ➡️ O-(g)
D) C(g) +e ➡️ C-(g)​

Answers

Answer: [tex]F(g)+e^-\rightarrow F^-(g)[/tex]

Explanation:

Electron gain enthalpy is defined as energy released on addition of electron to an isolated gaseous atom.  

The amount of energy released will be maximum when the tendency to attract electrons is maximum. As flourine has atomic number of 9 and has electronic configuration of 2,7. It can readily gain 1 electron to attain stable noble gas configuration and hence liberates maximum energy.

[tex]F(g)+e^-\rightarrow F^-(g)[/tex]

Suppose you have a mixture of iron filings, sand, and sugar and you want to separate the three. Fill in the materials you expect to see at each step as you perform the actions shown to separate them. The materials you may expect to see are: iron filings, sand, sugar, and sugar water.

Answers

Answer:

Explanation:

mixture of iron filings, sand, and sugar

First Step - Iron Fillings

Use a magnet to separate the iron fillings from the mixture. Due to magnetic properties of the iron fillings, the magnets would attract the iron fillings and separate it from the mixture.

Second step - Sand

Place the sand and sugar mixture in water. The sugar would dissolve in water and the sand easily separated by filtration.

Third step - Sugar and Sugar water

Boil the sugar water to remove the water and place in the refrigerator for crystallization of the sugar.

Other Questions
ACTIVITY NO.5: RECALL Direction: Complete the following sentences based on what you have learned I learned that -I should be aware of -I will continue - Calculate the vapor pressure (in torr) of a solution containing 0.2 moles of solute dissolved in 10 moles of water at 25C. Vapor pressure of pure water at 25C is 23.8 torr. Enter text here Enter 2021 Acellus Corporation. All Rights Reserved. C how do you solve 0.7n-1.5+7.3n=14.5 another one !!!pls help!! Suman with a mass of 45kg climbs in 3m heigh ladder in 10 seconds. Calculate her power. Plz help me Mr. Smith wants to order some pizza and cheese pizza cost $11 and pepperoni pizza cost $12.50 if you bought 13 pieces total and paid $153.50 how many pepperoni pizza did he buy meaning of the meaning of despair A store manager combines trail mix that is 30% raisins with a trail mix that is 55% raisins. He makes 800 lbs of trail mix that is 40% raisins. How many pounds of each trail mix does the manager use? Given 450.98 g of Cu(NO3)2, how many moles of Ag can be made? Provide your final answer rounded to two decimal places.Cu + 2 AgNO3 Cu(NO3)2 + 2 Ag John slides down a hill at a 4 m height initially at rest. If all energy is conserved and friction is excluded, what is John's velocity at the bottom of the ramp? #include main(){ int i, n=10, rem, inc=0; scanf("%d",&n); for(i=1; i =3) inc++; else; inc--; } printf("Final Value=\n",inc);}SOLVE THIS PROGRAM... 1.The illustration below shows that sexual reproduction involving two parent pea plants resulted in the production of four offspring.A. All four offspring received all of their genetic information only from Parent 1 and are therefore identical to that parentB. All four offspring received all of their genetic information only from Parent 2 and are therefore identical to that parent.C. All four offspring are genetically unique and did not receive any of their genetic information from either parent.D. Each of the offspring is genetically unique and received some of its genetic information from each parent, so each has some traits in common with each parent. Which sentence uses dashes correctly?1. Claire-who is on the basketball, volleyball-and track team is a very busy student.2. Claire who is one basketball, volleyball-and track team-is a very busy student.3. Claire-who is on the basketball, volleyball, and track team-is a very busy student.4. Claire who is on-the basketball, volleyball, and track teamis a very busy student. Actual demand for a product for the past three months wasThree months ago 390 unitsTwo months ago 340 unitsLast month 295 unitsa. Using a simple three-month moving average, make a forecast for this month. (Round your answer to the nearest whole number.)b. If 290 units were actually demanded this month, what would your forecast be for next month, again using a 3-month moving average? (Round your answer to the nearest whole number.)c. Using simple exponential smoothing, what would your forecast be for this month if the exponentially smoothed forecast for three months ago was 440 units and the smoothing constant was 0.20? (Round your answer to the nearest whole number.) Hans opens a circular window that is 3.5 feet across at its widest point. What is the circumference of the window to the nearest whole number? Use 3.14 for . help pls Why was Calhoun against the tariff of 1828? help me plssssss asap. thanks. Tobey, Finn, and Mary rode their bicycles in the park.Tobey: 432 yardsFinn: 1,300Mary: 1/4 mileWho rode the furthest? Explain how you know. please help 20 points if so. What is the volume of the rectangular prism?