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
Stella [2.4K]
3 years ago
7

What is the number of protons, neutrons, and electrons for isotope (Ta) with a mass number of 181?

Chemistry
1 answer:
ipn [44]3 years ago
7 0

Answer:

Explanation:

Name: Tantalum

Symbol: Ta

Atomic Number: 73

Atomic Mass: 180.9479 amu

Melting Point: 2996.0 °C (3269.15 K, 5424.8 °F)

Boiling Point: 5425.0 °C (5698.15 K, 9797.0 °F)

Number of Protons/Electrons: 73

Number of Neutrons: 108

Classification: Transition Metal

Crystal Structure: Cubic

Density @ 293 K: 16.654 g/cm3

Color: gray

You might be interested in
Substance A and B are chemically exactly the same. The molecules in substance A move much faster and are less ordered than the m
Elina [12.6K]

Answer:

substance A is a liquid, while substance B is a liquid or gas

7 0
3 years ago
Read 2 more answers
Match the following chemical reactions:
S_A_V [24]

Answer:

Synthesis - 4

reversible- 2

exchange- 1

decomposition-3

Explanation:

In synthesis reaction two or more components combines to form a single product. example 2H2+O2⇒2H2O

In reversible reaction two reactants combine to form two products . The products then reacts and forms back the reactants. example N2 +3H2 ⇒2NH3

In exchange reaction there is an alternation of ions of reactants to form new products. AB+CD ⇒AC + BD

In decomposition reaction, molecules of a compound break down by the action of heat or light or catalyst. example CaCO3 ⇒CaO +CO2

3 0
3 years ago
An analytical chemist is titrating of a solution of propionic acid with a solution of 224.9 ml of a 0.6100M solution of propioni
Svetllana [295]

<u>Answer:</u> The pH of acid solution is 4.58

<u>Explanation:</u>

To calculate the number of moles for given molarity, we use the equation:

\text{Molarity of the solution}=\frac{\text{Moles of solute}\times 1000}{\text{Volume of solution (in mL)}}    .....(1)

  • <u>For KOH:</u>

Molarity of KOH solution = 1.1000 M

Volume of solution = 41.04 mL

Putting values in equation 1, we get:

1.1000M=\frac{\text{Moles of KOH}\times 1000}{41.04}\\\\\text{Moles of KOH}=\frac{1.1000\times 41.04}{1000}=0.04514mol

  • <u>For propanoic acid:</u>

Molarity of propanoic acid solution = 0.6100 M

Volume of solution = 224.9 mL

Putting values in equation 1, we get:

0.6100M=\frac{\text{Moles of propanoic acid}\times 1000}{224.9}\\\\\text{Moles of propanoic acid}=\frac{0.6100\times 224.9}{1000}=0.1372mol

The chemical reaction for propanoic acid and KOH follows the equation:

                 C_2H_5COOH+KOH\rightarrow C_2H_5COOK+H_2O

<u>Initial:</u>          0.1372         0.04514  

<u>Final:</u>           0.09206          -                0.04514

Total volume of solution = [224.9 + 41.04] mL = 265.94 mL = 0.26594 L     (Conversion factor:  1 L = 1000 mL)

To calculate the pH of acidic buffer, we use the equation given by Henderson Hasselbalch:

pH=pK_a+\log(\frac{[\text{salt}]}{[acid]})

pH=pK_a+\log(\frac{[C_2H_5COOK]}{[C_2H_5COOH]})

We are given:  

pK_a = negative logarithm of acid dissociation constant of propanoic acid = 4.89

[C_2H_5COOK]=\frac{0.04514}{0.26594}

[C_2H_5COOH]=\frac{0.09206}{0.26594}

pH = ?  

Putting values in above equation, we get:

pH=4.89+\log(\frac{(0.04514/0.26594)}{(0.09206/0.26594)})\\\\pH=4.58

Hence, the pH of acid solution is 4.58

7 0
3 years ago
In balancing an equation, we change the __________ to make the number of atoms on each side of the equation balance.
Gnesinka [82]
If you are talking about chemistry, it's coefficient!
7 0
2 years ago
A certain orbital of the hydrogen atom has n = 4 and l = 2 what are the possible values of ml for this orbital?
Nadya [2.5K]

The ml is also called as the magnetic quantum number. The value of ml can range from –l to +l including zero. Hence all of the possible values for ml given that l = 2 are:

<span>-2, -1, 0, + 1, + 2</span>

3 0
3 years ago
Other questions:
  • Suppose you held a lighted match to a solid hunk of wood and another match to a pile of wood shavings. Which form of wood will c
    13·1 answer
  • Which of the following statements does not accurately describe Precambrian Earth?
    10·2 answers
  • The volume of a gas is increased from 0.5 L to 4.0 L while the temperature is held constant. The pressure of the gas will go fro
    12·1 answer
  • Name an element which matches the description
    5·1 answer
  • How to do part (b)??
    9·1 answer
  • Problem PageQuestion In the Hall-Heroult process, a large electric current is passed through a solution of aluminum oxide dissol
    14·1 answer
  • Because of this difference in entropy change, the net entropy change of the entire system is ________ during a real isothermal e
    5·1 answer
  • Running the dishwasher only one and it's completely full is an example of. PLZ HELP ME :)
    13·2 answers
  • Please help me on this 3 question I need help.
    15·1 answer
  • The reaction N2O4↽−−⇀2NO2 is allowed to reach equilibrium in a chloroform solution at 25 ∘C . The equilibrium concentr
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!