1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
marysya [2.9K]
3 years ago
15

Elements can be described by their properties. Some of these properties are physical properties and some are chemical properties

Observe the list provided. Which one of these contains ONLY Cchemical properties
A) C,E,F
B) B,C,E
C) B, E, F
D) C,D,E​

Chemistry
1 answer:
Over [174]3 years ago
6 0

Answer:

B.) B, C, F,

Explanation:

Hindi ako sure!!

You might be interested in
Question 3 0 / 1 point How many grams of carbon atoms are present in a sample of C3H8 if there are 4.10 moles of hydrogen atoms
hodyreva [135]

Answer:

18.45 g of C

Explanation:

This is a problem of rules of three:

1 mol of C₃H₈ contains 3 moles of C and 8 moles of H

If 8 moles of H are contained in 1 mol of propane

4.10 moles of H are contained in (4.1 . 1) /8 = 0.5125 moles

Now, If 1 mol of propane contains 3 moles of C

0.5125 moles of propane may contain (0.5125 . 3) / 1 = 1.5375 moles of C

Let's convert the moles to mass:

1.5375 mol . 12 g /mol = 18.45 g

5 0
3 years ago
How many grams of carbon are contained in one mole of C3H8?
Nataly_w [17]

Answer:

The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles C3H8, or 44.09562 grams

4 0
2 years ago
The amount of kinetic energy an object has depends on which feature of the object?
maks197457 [2]

Answer:

mass

Explanation:

The amount of kinetic energy an object has, depends on its mass and its speed.

5 0
3 years ago
Calculate the molecular (formula) mass of each compound: (a) iron(ll) acetate tetrahydrate; (b) sulfur tetrachloride; (c) potass
Nutka1998 [239]

Answer:

a) Iron(ll) acetate tetrahydrate: 245,68 g/mol

b) Sulfur tetrachloride: 173,87 g/mol

c) Potassium ermanganate 158,034 g/mol

Explanation:

To solve this kind of exercises you must look for the number of atoms in each molecule first, then look on the periodic table the atom weight and the multiply the atom weight times the quantity of each atom. For instance:

The molecule of Iron(II) acetate itetrahydrate is (CH3COO)2Fe•4H2O, it means that you have:

2 atoms of carbon times the atomic weight of C (12.00g/mol)= 24g

14 atoms of Hidrogen times the atomic weight of H (1,00g/mol)= 14g

6 atoms of Oxigen times the atomic weight of O (16,0g/mol)= 96

2 atoms of Iron times the atomic weight of Fe (55,84g/mol)= 111,68g

At last, you only have to add the results: 24+14+96+11,68= 245,68g/mol. This example was for the first molecule.

See you,

5 0
3 years ago
Which of the following statements regarding alpha particles are true? Check all that apply.a. Alpha particles have a mass number
egoroff_w [7]

Answer:

The only true statement is:

  • a. <u><em>Alpha particles have a mass number of 4</em></u>

Explanation:

<em>Alpha particles</em> are radiactive particles equivalent to a helium nucleus, so they have two protons and two neutrons.

Hence, alpha particles, α, are represented as:

  • ⁴₂He

The superscript 4 to the left of the chemical symbol is the <em>mass number:</em> 2 protons + 2 neutrons = 4

The subscript 2 to the left of the chemical symbol is the atomic number: 2 protons = 2.

Hence, the statement "a. Alpha particles have a mass number of 4" is true.

As for the other statements, you have:

<em>b. Alpha particles have a nulear charge of +1:</em> <u>false</u>

Since, these particles are the nucleous of the helium atom, the nuclear charge equals the number of protons of this atom: +2. Hence, the statement is false.

c. <em>Alpha particle formation is accompanied by the conversion of a proton into a neutron</em> and d. <em>Alpha particle formation is accompanied by the conversion of a neutron into a proton</em>. <u>(both false</u>)

The conversion of a protons into a neutrons and the conversion of a neutron into a proton are product of other kind of radiactive desintegrations.

  • The conversion of a proton into a neutron involves the emission of a positron ( particle with same mass as the electron but positive charge) from the nucleus, which is represented as ⁰₊₁β.

  • The conversion of a neutron into a proton involves the emssion of an electron from the nucleus, which is the emission of a beta particle represented as ⁰₋₁β.

Therefore, these last two statements are also false.

4 0
3 years ago
Other questions:
  • A 14.8 L balloon is at 255 K. What will be its volume if the temperature is 304 K?
    15·1 answer
  • Assuming equal concentrations and complete dissociation, rank these aqueous solutions by their freezing points. NH4l, CoBr3, Na2
    6·1 answer
  • Does anyone understand Hybrid Orbitals?
    11·1 answer
  • What is revealed in the reaction ca2+(aq) + 2oh-(aq) ca(oh)2(s), deltah + 16.71?
    15·2 answers
  • An atom of Ni has 26 electrons. What is the charge of this atom?
    8·1 answer
  • Given the following solutions: Solution A: pH of 10 Solution B: pH of 7 Solution C: pH of 5 Which list has the solutions placed
    10·1 answer
  • What makes up a compound
    12·2 answers
  • What is the formula for Disulfur Pentafluoride?
    12·1 answer
  • Differences between alkalis, bases and acids? (answer for many points :) )
    10·1 answer
  • What is the F-Xe angle in the molecule - F; Xe * F_{2} (Xe has three lone pairs of electrons )?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!