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
Svetradugi [14.3K]
3 years ago
10

2. What is the mass of one mole of Na?

Chemistry
1 answer:
borishaifa [10]3 years ago
5 0
Sodium, Atomic mass: 22.989769 g
You can see in a periodic table
You might be interested in
Issue like gay marriage, abortion, and education have caused debate over the constitution because of the issue of what? (Hint: f
Korolek [52]
Yes 81671 cupcake ham shops
3 0
2 years ago
Homework 1
Bond [772]

Answer:

average for silk =141"

average for cotton =96"

average for nylon = 70"

if you desire a slower falling parachute to protect the body from damage,

silk is the best

if you desire a faster falling parachute to escape enemy bullets,

nylon is the best

Explanation:

Homework 1

Problem Solving

1. Kelvin and Xavier were doing an investigation on parachutes. One of them suggested that the type of material the parachute was made from had an effect on how long it took to reach the ground. Their results are given in

the table below.

(a) Calculate the average time in seconds for each material.

Time taken for parachute to reach the ground (seconds)

MATERIAL

1st TRY

2nd TRY

3rd TRY

AVERAGE

Sik

144

140  average of 3 = 141

139

Cotton

98

96   average of 3  = 96

94

Nylon

72

68    average of 3 = 70

70

5 0
2 years ago
A 13-gram rubber stopper is attached to a 0.93-meter
makkiz [27]
<h3>Answer:</h3>

The centripetal acceleration is 26.38 m/s²

<h3>Explanation:</h3>

We are given;

  • Mass of rubber stopper = 13 g
  • Length of the string(radius) = 0.93 m
  • Time for one revolution = 1.18 seconds

We are required to calculate the centripetal acceleration.

To get the centripetal acceleration is given by the formula;

Centripetal acc = V²/r

Where, V is the velocity and r is the radius.

Since time for 1 revolution is 1.18 seconds,

Then, V = 2πr/t, taking π to be 3.142 ( 1 revolution = 2πr)

Therefore;

Velocity = (2 × 3.142 × 0.93 m) ÷ 1.18 sec

             = 4.953 m/s

Thus;

Centripetal acceleration = (4.953 m/s)² ÷ 0.93 m

                                        = 26.38 m/s²

Hence, the centripetal acceleration is 26.38 m/s²

6 0
3 years ago
Please can you help me with this ​
vlabodo [156]

Answer:

C. Pulley.

Explanation:

8 0
3 years ago
11. Fill in the blanks below for a general chemical reaction (products, reactants).
Bad White [126]
Reactants on the left and products on the right
5 0
3 years ago
Other questions:
  • The density of the hydrocarbon in part (a) is 2.0 g l-1 at 50°c and 0.948atm. (i) calculate the molar mass of the hydrocarbon. (
    6·1 answer
  • Complete the balanced molecular reaction for the following weak acid with a strong base:HNO2(aq) + Ca(OH)2 (aq)
    14·1 answer
  • Lewis dot structure for HNO2
    8·1 answer
  • The total number of each element is not changed during a chemical reaction
    6·1 answer
  • Hey y’all, I’m growing a plant for science class but I need some questions about the plant, can someone please give me atleast 3
    14·1 answer
  • What colors are absorbed Best Buy the plant gizmo
    7·1 answer
  • An atom with5 protons 6 neutrons and 5 electrons has an atomic mass of Amy
    9·1 answer
  • Compare the alkali metals and alkaline earth metals with respect to (i) Ionization enthalpy (ii) basicity of oxides (iii) solubi
    13·1 answer
  • Two posssible lewis structures for the molecule ch2s are given. determine the formal charge on each atom in both structures
    6·1 answer
  • Write the chemical equation for this reaction. Use the picture I provide!
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!