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Sindrei [870]
4 years ago
12

Which contains elements with similar properties in the periodic table? A. a period B. a column C. a row

Chemistry
2 answers:
Dima020 [189]4 years ago
7 0

That would be a column (called  a group)

Semmy [17]4 years ago
6 0

Answer: Option (B) is the correct answer.

Explanation:

Elements of a group represent similar chemical properties because they contain same number of valence electrons which determines their reactivity.

Hence, elements of a group have same chemical nature or property.

A group is represented by a vertical column in a periodic table.

On the other hand, a period is represented by a horizontal line.

Thus, we can conclude that a column contains elements with similar properties in the periodic table.

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Is a small whole number that appears in front of a formula in a chemical equation?
Bezzdna [24]
No. It appears behind the equation
4 0
3 years ago
What relationship can you see between the mass and the volume of an object
notsponge [240]

If the ratio of mass to volume is higher, then density is higher. If the ratio of mass to volume is lower, the density is lower.

4 0
3 years ago
Read 2 more answers
Identify whether each species functions as a Brønsted-Lowry acid or a Brønsted-Lowry base in this net ionic equation.CH3COO-+HCO
NARA [144]

Explanation :

According to the Bronsted Lowry concept, Bronsted Lowry-acid is a substance that donates one or more hydrogen ion in a reaction and Bronsted Lowry-base is a substance that accepts one or more hydrogen ion in a reaction.

Or we can say that, conjugate acid is proton donor and conjugate base is proton acceptor

The given equilibrium reaction is,

CH_3COO^-+HCO_3^-\rightleftharpoons CH_3COOH+CO_3^{2-}

In this reaction, CH_3COO^- and HCO_3^- are act as Bronsted Lowry base and acid respectively and CH_3COOH and CO_3^{2-} are act as Bronsted Lowry acid and base respectively.

The formula of conjugate of CH_3COO^- is, CH_3COOH

The formula of conjugate of HCO_3^- is, CO_3^{2-}

7 0
3 years ago
Read the excerpt from Harriet Tubman: Conductor on the Underground Railroad. She started talking about William Still and the Phi
tankabanditka [31]

Answer:

Ethos, because she is using her own knowledge as a tool.

Explanation:

Harriet Tubman was an activist and served as a spy for Union Army. <u>'Harriet Tubman: Conductor on the Underground Railroad'</u> is a book written by Ann Petry narrating the accounts of life of Harriet Tubman who helped free 300 slaves using the paths of Underground Railroad.

In the given excerpt, Tubman has used the rhetorical appeal of 'ethos' as she is using her own knowledge as a tool. While rescuing slaves using Underground Railroad, Tubman made up several stories to keep the slaves moving and encourage them in their paths of freedom. The path for freedom was dangerous, and Tubman knew that some may back up from this, so she kept telling them about people who chose to struggle for freedom, made up stories about them and used this knowledge as a tool to keep the slaves encouraged and motivated. And no one asked her even one question as they trusted her (credibility-- element of ethos).

Thus, the tool Tubman has used in the given excerpt is ethos.

4 0
4 years ago
Read 2 more answers
Riya rides his bike 63 miles in 270 minutes. What is his average speed in miles per hour? Be sure to include the equation for sp
bekas [8.4K]

Answer:

14mph

Explanation:

270 minutes = 4 hr and 1/2hr

63 miles = 63/4.5 = 14 miles per hour

Making the speed 14mph

Equation = h = 4.5     

(4h x 4h ) + (1 x 311/100) = 60

= 4h x 4h +( 1 x 311/100) =60

= 16h^2 + (1 x 311/100) =60

= 256h + (1 x 311/100) =60

= 256h + 14 = 60

= 270h  =  60

= h = 4.5    

8 0
4 years ago
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