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
olga_2 [115]
3 years ago
7

Which of the following is true of groups on the periodic table? A. Groups are horizontal and do not have the same properties. B.

Groups are vertical and do not have the same properties. C. Groups are horizontal and have the same properties D. Groups are vertical and have the same properties.
Chemistry
1 answer:
Stells [14]3 years ago
3 0
<span>Groups are vertical, numbered 1 through 18, and have similar properties, so answer D. Most of the properties of groups are defined by the outermost electron in the shells of the elements. Horizontal delineations in the Periodic Table are known as periods.</span>
You might be interested in
Which event always involves a chemical change A boiling B melting C conducting D burning
Andrew [12]
The answer is Burning
4 0
4 years ago
CHEM HELP PLEASE
natka813 [3]

Answer:

90.2%

Explanation:

% yield = actual yield/ theoretical yield * 100%

% yield = (312/346)*100% = 90.2%

3 0
3 years ago
A 10.00 g sample of a soluble barium salt is treated with an excess of sodium sulfate to precipitate 11.21 g BaSO4 (M- 233.4). W
aliina [53]

Answer:

The salt is barium chloride.

Explanation:

BaX_2++Na_2SO_4\rightarrow BaSO_4+2NaX

Moles of barium sulfate =\frac{11.21 g}{233.38 g/mol}=0.0480 mol

According to reaction, 1 mol of barium sulfate is produced from 1 mol of BaX_2.

Then 0.0480 moles will be produced from:

\frac{1}{1}\times 0.0480 mol=0.0480 mol of BaX_2.

Mass of BaX_2 used = 10.00 g

Moles of BaX_2 =\frac{10.00 g}{\text{Molar mass}}[/tex]

0.0480 mol=\frac{10.00}{\text{Molar mass}}

Molar mass of BaX_2 = 208.33 g/mol

The nearest answer to our answer is BaCl_2=208.2 g/mol.

The correct answer barium chloride with molar mass of 208.2 g/mol.

8 0
3 years ago
The atomic mass and abundance of Cr-50 is 49.946 amu and 4.3%. The atomic mass and abundance of Cr-52 is 51.941 amu and 83.8%. T
Sati [7]
Multiply the mass by the abundance and add each. Make sure to convert the percentage into a decimal. (49.946 * .043) + (51.941 * .838) + (52.941 * .095) + (53.939 * .024) = 51.99 round up using sig figs and the answer is c. 52.00 amu
6 0
3 years ago
My high school chemistry is learning this and I don't understand it. "Heat is measured by the following equation:
tangare [24]

Answer:

you didn't ask a question so here is your explanation.

Explanation:

Q = mc∆T. Q = heat energy (Joules, J) m = mass of a substance (kg) c = specific heat (units J/kg∙K) ∆ is a symbol meaning "the change in"

5 0
3 years ago
Other questions:
  • The process to separate the various components of a liquid mixture is fractional distillation. True False
    15·1 answer
  • In an endothermic reaction, heat is absorbed from the surroundings. How does this affect entropy?
    5·2 answers
  • If the percentage ionization of an 0.10 M acid is 3.0%, what is its acid dissociation constant?
    14·1 answer
  • An ice cube is dropped into boiling water. How will heat flow between the water and the ice cube?
    11·2 answers
  • Which of processes of water cycle occur by releasing energy
    13·1 answer
  • If the calcium oxide were to be obtained by the heating of calcium hydroxide, how much hydroxide would be needed to obtain the 1
    7·1 answer
  • How many grams of Na2SO4 are required to make 0.30 L of 0.500 M Na2SO4?
    14·1 answer
  • What is the wavelength of electromagnetic radiation with a frequency of 5.00 x 10^12 Hz? S
    6·1 answer
  • What is the formula for Disulfur Pentafluoride?
    12·1 answer
  • If 0.62 moles of KClO3 is decomposed, how many grams of O2 are produced?<br><br> 2KClO3 → 2KCl + 3O2
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!