Chemistry Middle School

Molar mass is reported on the periodic table in the units

A. kg/m3
B. grams/mole.
C. moles/gram.
D. atoms/gram.

Answers

Answer 1

Answer:

[tex]\boxed{\sf B. \ grams/mole}[/tex]

Explanation:

[tex]\sf The \ molar \ mass \ of \ a \ substance \ is \ the \ mass, \ in \ grams,\ per \ one \ mole.[/tex]

[tex]\displaystyle \sf \frac{grams}{mole}[/tex]

Answer 2

Answer:

B

Explanation:

Grams/mole is correct. Got right on test!

Related Questions

How can you guess the name of the element using the chemical formula ?

Answers

The number of protons define what element we're dealing with.

Answer: The number of protons define what element we're dealing with.

1) what is formed when hydrogen burns ? write the equation for the reaction .
2) why do you think that, when hydrogen burns, the flame Rises quickly ?​

Answers

Answer:

formed by burns rises quickly hydorogen

[tex] H_2+\frac12O_2 \longrightarrow H_2O[/tex]

I don't think I need to name the product.

this reaction is very exothermic. so the gases and the flames are very hot, i.e. very lighter (hot air rises) than the normal air. so it rises quickly

A substance X contains 10 gram of calcium carbonate calculate the number of oxide of calcium carbonate present in X ​
please help

Answers

Answer:

I got 0.01 moles, hope this helps!

First you have to calculate the number of moles of caco3 ! Use n=m/M ! YOH will get 0.1 moles ! By using stiochiometry you will get


O3/Caco3 = 48/100 (molar masses ) = x/0.1. ( using moles ) then you will get x = 0.048 moles

Explain what a limiting reactant is and describe the process to determine the limiting reactant in the example listed below: Given 3.4 grams of x compound with a molar mass of 85 g and 4.2 grams of y compound with a molar mass of 48 g How much of compound xy can be generated 2x + y2 = 2xy

Answers

Answer:

4.36g XY

I hope it helps!

4.36g!!!!!!!!!!! Did the math on paper!

i need help asap. any help is appreciated.

the diagram shows an electrochemical cell with copper (left) and zinc (right) strips.

**Label all parts (1-9), including the solutions in each beaker and the connecting tube
**Label which cell is the cathode and which cell is the anode include the charge on each strip
**Show, or describe in detail, the flow of electrons
**Describe what type of electrochemical cell is pictured. Explain how the cell works Include the oxidation the oxidation half-reacions in your explanation

Answers

Answer:

Explanation:

1- Cathode 2- copper electrolyte solution usually (CuSO4) 3- Cu half cell 4- bulb (when lighted, shows the current is flowing) 5- Zn half cell 6- Zn electrolyte solution 7- connecting wires 8- anode (Zn) 9-salt bridge

2- the copper-(Cu) electrode is the cathode and the zinc-(Zn) electrode will be the anode. This is because the cathode is negatively charged (while Cu is positively charged, so it attracts) and the anode is positively charged (while Zn will be negative)

3- the electrons flow from the anode, where oxidization takes place, to the cathode, where reduction reactions take place.

That's the best i can do. Hope it helps.

Answer:

Explanation:

• Label all parts (1–9), including the solutions in each beaker and the connecting tube.

1. Copper strip

2. Cu2+(aq) (copper electrolyte solution or copper nitrate)

3. Cathode compartment  

4. Light bulb  

5. Anode compartment  

6. Zn2+ (aq) (zinc electrolyte solution or zinc nitrate)  

7. The connecting wires or the external circuit  

8. Zinc strip  

9. Salt bridge  

• Label which cell is the cathode and which cell is the anode. Include the charge on each strip.

The copper strip is the cathode and the zinc strip is the anode. The anode is positively charged and the cathode is negatively charged. This is because the cathode attracts a positive charge and the anode attracts a negative charge.  

• Show, or describe in detail, the flow of electrons.

The atoms from the zinc strip are oxidized into zinc ions, (the anode is where oxidation occurs). The electrons in the anode then travel through the wire to the copper strip. The electrons then merge with the copper ions in the solution creating copper metal (the cathode is where reduction occurs).  

• Describe what type of electrochemical cell is pictured. Explain how the cell works. Include the oxidation and reduction half-reactions in your explanation.  

This is a voltaic or galvanic cell. It works by using spontaneous oxidation-reduction reaction to generate electricity.  

Zn(s) --- Zn2 + (aq) + 2e-  

Cu2 + (aq) + 2e- --- Cu(s)

Glucose has formula C6 H12 O6.
Calculate the number of Oxygen atoms present in 18 g of glucose​

Answers

Explanation:

this may help u follow me and mark as brainlist PlZzzzz

Approx.
1
10
⋅
m
o
l
×
24
⋅
atoms
⋅
m
o
l
−
1
×
N
A
,
where
N
A
=
6.022
×
10
23
⋅
m
o
l
−
1
.
Explanation:
We take the quotient.....
Number of moles
=
Mass of substance
⋅
g
Molar mass
⋅
g
⋅
m
o
l
−
1
=
Mass of substance
⋅
g
Molar mass
⋅
g
⋅
m
o
l
−
1
=
1
1
m
o
l
=
m
o
l
And thus we get an answer with dimensions of
m
o
l
as we require...
And so we retake the quotient.......
Number of moles of glucose
=
18
⋅
g
180.16
⋅
g
⋅
m
o
l
−
1
=
?
?
⋅
m
o
l
.
We know that glucose,
C
6
H
12
O
6
, has a formula of
180.16
⋅
g
⋅
m
o
l
−
1
, i.e.
(
6
×
12.011
+
12
×
1.00794
+
6
×
16.00
)
⋅
g
⋅
m
o
l
−
1
=
?
?
⋅
g
⋅
m
o
l
−
1
......
We are not finished there, because we were asked to find the number of atoms in such a molar quantity, and there are 24 atoms in one molecule of glucose.
And so we multiply the molar quantity by number of atoms per mole, and then by Avogadro's number to get the number of atoms,
18
⋅
g
180.16
⋅
g
⋅
m
o
l
−
1
×
24
⋅
atoms
⋅
m
o
l
−
1
×
N
A
18
⋅
g
180.16
⋅
g
⋅
m
o
l
−
1
×
24
⋅
atoms
⋅
m
o
l
−
1
×
6.022
×
10
23
⋅
m
o
l
−
1
=
?
?

are mountains physical or chemical property
Is water a physical or chemical property
is a box a physical or chemical property
is a lion a physical or chemical property

Answers

Answer: mountains not sure

Water is chemical

Box is physical

Lion is physical

Hope this helped!!

Answer:

Answer: mountains not sure

Water is chemical

Box is physical

Lion is physical

Hope this helped!!

Explanation:

(Pls Help) The study of such concepts as motion, force,y energy, matter, heat, sound, light, and the components of atoms is:
- Physics
- Biology
- Earth Science
- Astronomy​

Answers

Answer:

It is Physics

because these are all physical components and/or characteristics

-Biology is the study of life

-Earth science is the study of the biosphere we live in

-Astronomy is about space

Answer:

Physics

Explanation:

Physics is the study of motion and force...

Biology is the study of life

Earth Science is wind, water and uk...

Astronomy is about planets and stars

Other Questions
What is the width of the rectangle shown below? 4x + 3 A = 8x2 10x 12 What is the result when the number 90 is decreased by 10% Combine the radicals. 224+554 A) 536 B) 56 C) 196 D) 936 Determine the convergence or divergence of the sequence with the given nth term. If the sequence converges, find its limit. (If the quantity diverges, enter DIVERGES.) an = 1/sqrt(n) Which is represented by the image? What three things did you like about the book? Explain why? What was your favourite part and why? From the book mahashweta by sudha murty Help me Im stuck please The following data were taken from the financial statements of Gates Inc. for the current fiscal year. Property, plant, and equipment (net) $971,600 Liabilities: Current liabilities $140,000 Note payable, 6%, due in 15 years 694,000 Total liabilities $834,000 Stockholders' equity: Preferred $4 stock, $100 par (no change during year) $834,000 Common stock, $10 par (no change during year) 834,000 Retained earnings: Balance, beginning of year$890,000 Net income386,000 $1,276,000 Preferred dividends$33,360 Common dividends130,640 164,000 Balance, end of year 1,112,000 Total stockholders' equity $2,780,000 Sales $21,141,000 Interest expense $41,640 Assuming that total assets were $3,433,000 at the beginning of the current fiscal year, determine the following. When required, round to one decimal place. What goal did the Western allies have in the Boxer Rebellion?O A. To conquer and occupy all of ChinaB. To prove to Japan that Europeans controlled AsiaC. To protect the ability of business to continue trade with ChinaO D. To depose the dowager empress and institute a democracy Please help! Dad will murder me if I don't have this done by the time he gets home! 100 points for whoever solves this! I need all the steps A solid block is attached to a spring scale. When the block is suspended in air, the scale reads 21.2 N; when it is completely immersed in water, the scale reads 18. 2 N. What are the volume and density of the block? What is the solution to 7 p = -56? A. -49 B. -8 C. 8 D. 49 Identify the kind of logical fallacy found in the following sentence. I knew my blind date would be horrible when the cat coughed up a hairball in my shoe while I was getting ready. A. reversing causal direction B. slippery slope C. cherry picking D. post hoc/false cause A customer buys 1,000 shares of XYZ at $60 in a margin account, regular way settlement. Two days after the trade, XYZ has dropped to $40. The minimum maintenance margin requirement is: Two sources of light of wavelength 700 nm are 9 m away from a pinhole of diameter 1.2 mm. How far apart must the sources be for their diffraction patterns to be resolved by Rayleigh's criterion Zachary loves to play with his little sister Dayla. Zachary kicks a ball hoping Dayla will kick it back, but, much to Zachary's dismay, she simply stares at the ball and smiles toward her brother. She recently started walking without support. What are the likely ages of Dayla and Zachary? Which one does not describe the ways that players associations support players? A. Providing them with guidance in salary and labor arbitration. B. Providing them with equipment and instruction to enable them to perform at the highest possible level. C. Providing them with salary and contract data. D. Providing them with information to support negotiations. Review what you know about products and sums represented by rectangular area models. [5 points] Use algebra tiles to multiply (x-1)(3x+2). Line m and point P are shown below. Part A: Using a compass and straightedge, construct line n parallel to line m and passing through point P. Leave all construction marks. Part B: Explain the process that you used to construct line n.