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
yawa3891 [41]
3 years ago
9

What’s the mass number for this atom

Chemistry
1 answer:
adelina 88 [10]3 years ago
7 0

Answer:

169

Explanation:

Mass number is the number of protons and the number of neutrons combined.

70 + 99 = 169

You might be interested in
PLZ HELP. Write and balance the following chemical equations:
zubka84 [21]

Answer:

No they form nitrogen oxide which can be poisonous to some species but depending on the amount of nitrogen it can be harmful to everything living. Such as if you put it with a plant that had low nitrogen levels then there would be no carbon dioxide to filter.

Explanation:

6 0
3 years ago
What statement is incorrect about this oxidation-reduction reaction? 2 SO2(g) + O2(g) → 2 SO3(g) What statement is incorrect abo
Leno4ka [110]

Answer:

The incorrect statement is: SO₂ gains electrons                      

Explanation:

A chemical reaction that involves the simultaneous transfer of electrons between two chemical species, is known as the redox reaction.

Given chemical reaction: 2SO₂(g) + O₂(g) → 2SO₃(g)

In this redox reaction, S is present in +4 oxidation state in SO₂ and +6 oxidation state SO₃. Whereas, O is present in 0 oxidation state in O₂ and -2 oxidation state in SO₃.

<u>Therefore, SO₂ loses electrons and thus gets oxidized. Whereas, O₂ gains electrons and thus gets reduced. </u>

<u>In this reaction, SO₂ is the reducing agent and O₂ is the oxidizing agent.</u>

6 0
3 years ago
Define energy and power and describe the relationship that exists between them.
bagirrra123 [75]
Energy is ability to work or function. Power is the amount of energy transferred to an object.
When energy is transferred to an object or has energy it moves and power is the energy put in a object, meaning they work together to move the object
4 0
3 years ago
1. How many mg of lithium phosphide are in 18.0 mL of a 1.25 M solution?
Temka [501]

Answer:

1160mg

Explanation:

Molarity = number of moles ÷ volume

According to the information in the question, molarity = 1.25 M, volume = 18.0 mL = 18/1000 = 0.018L

M = n/V

n = M × V

n = 1.25 × 0.018

n = 0.0225moles.

Using mole = mass/molar mass, to find the mass of lithium phosphide (Li3P)

Molar mass of Li3P = 6.9(3) + 31 = 51.7g/mol

mole = mass/molar mass

0.0225 = mass/51.7

mass = 1.16grams.

In milligrams (mg), mass of Li3P = 1.16 × 1000 = 1160mg

6 0
3 years ago
The chemical which is changed into the product
seropon [69]
The chemical change can occur can be find if you mix the two solids in one direction
5 0
4 years ago
Read 2 more answers
Other questions:
  • Rock and ice particles make up the ____ of the Jovian planets? Ring system, craters, volcanoes, or asteroids
    11·1 answer
  • Place the following elements in order of increasing electronegativity.K Cs PA. K &lt; P &lt; CsB. P &lt; Cs &lt; KC. Cs &lt; K &
    15·1 answer
  • Classify each process by its individual effect on the entropy of the universe, s. hydrogen peroxide slowly decomposing into wate
    5·1 answer
  • I don't understand what makes a covalent bond "polar." What exactly is polarity?
    14·1 answer
  • What is an example of a compound science
    5·1 answer
  • A beaker was half filled with freshly distilled H2O and placed on a hot plate. As the temperature of the water reached 100°C, vi
    5·2 answers
  • g The boiling of water is a Question 4 options: chemical and physical damage chemical change because a gas (steam) is given off
    8·1 answer
  • The temperature of a sample of water in the liquid phase is raised 30 degrees Celsius by the addition of 3762 J. What is the mas
    10·1 answer
  • 3. Determine the pH of each of the following solutions. (Hint: See Sample Problem B.) a. 1.0 x 10-2 M HCI c. 1.0 x 10-MHI b. 1.0
    7·1 answer
  • What happens to elements when they combine together chemically ?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!