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
Nataly [62]
3 years ago
11

A student writes Ba²⁻ as the symbol for a barium ion. Explain what is incorrect about the symbol.

Chemistry
1 answer:
elena-14-01-66 [18.8K]3 years ago
8 0
It should be 2+ because Ba is in the 2nd group which means it needs two more electrons.
You might be interested in
Consider the following reaction at 298 K.
Jlenok [28]

Answer and Explanation:

The reaction is in the gas phase, so the equilibrium constant is expressed in terms of the partial pressures (P) of the products and reactants, as follows:

Kp = \frac{P^{2}_{SO_{3}  } }{P_{SO_{2}} ^{2}P_{O_{2}}  }

We have the following data:

P(SO₃) = 2.6 atm

P(O₂) = 0.43 atm

We need Kp for this reaction. We can assume that in Appendix 4 we found that Kp = 7 x 10²⁴.

Then, we introduce the data in the equilibrium constant expression to calculate the partial pressure f SO₂ (PSO₂), as follows:

P_{SO_{2} } = \sqrt{\frac{P_{SO_{3} } ^{2} }{Kp P_{O_{2} } } } = \sqrt{\frac{(2.6 atm)^{2} }{(7 x 10^{24)}(0.43 atm) } } = 1.5 x 10^{-12} atm

Therefore, the partial pressure of SO₂ is 1.5 x 10⁻¹² atm (for the given Kp).

4 0
3 years ago
Do you think that participation in a Supervised Agriculture Experience (SAE) prepares a student for a career in the AFN industry
irinina [24]

Answer:

The SAE curriculum includes practical farming tasks conducted outside the scheduled classroom and laboratory period by students. SAEs offer a method for students in agricultural education to gain real-world work opportunities that they are most interested in in the field of agriculture. Supervised agricultural experience is an essential component of agricultural education, and all Agriculture, Food and Natural Resources (AFNR) courses are a necessary component.

Explanation: Hope it helps

6 0
3 years ago
7.26 of a hydrate, Cu(NO3)2.xH2O, formed 2.4 g copper(II) oxide.
goldfiish [28.3K]

Number of moles= mass/ molar mass

Or n=m/MM

n = number of moles

m = mass

MM = molar mass

1) n CuO = 2.4g / 79.54g/mol = 0.03 mol CuO

2) n Cu(NO3)2.xH2O = 7.26 g / 205.6 = 0.035 moles of Cu(NO3)2.xH2O

3) 205.6 g

Cu = 63.5 g

N = 14g

O =16g

H= 1 g

63.5+ (14+(16*3))*2+1*2+16 =205.6 g

4) yes is 188g

5) I don’t know, I assume was 1

6 0
4 years ago
Read 2 more answers
Time (sec) [CH4] (mol/L)
Oxana [17]

Based on the table and the equation of reaction; the

  • rate of consumption of oxygen between time 20 and 40s is 0.005 M/s
  • rate of consumption of oxygen between time 40 and 60s is 0.0025 M/s

<h3>What is rate of a reaction?</h3>

The rate of a reaction is the rate at which reactants molecules are consumed or products are formed.

  • Rate of reaction = change in concentration of reactants or products/ time taken

Based on the equation of reaction, the rate of consumption of oxygen is equal to the rate of consumption of methane.

Thus. rate of consumption of oxygen from time 20 seconds to time 60 seconds is calculated as follows:

Rate between 20 and 40 = 1.0 - 0.9/20

  • Rate of consumption of oxygen = 0.005 M/s

Rate between 40 and 60 = 0.9 - 0.85/20

  • Rate of consumption of oxygen = 0.0025 M/s

Therefore, the rate of consumption of oxygen decreases with time.

Learn more about rate of reaction at: brainly.com/question/25724512

8 0
3 years ago
What is the ratio of Al3+ ions to S2- ions in a neutral compound?
vichka [17]
I believe the correct answer from the choices listed above is option C. The  ratio of Al3+ ions to S2- ions in a neutral compound would be 2:3. When it is a neutral compound the chemical formula would be Al2S3. As you can see in every 2 ions of Al you need 3 ions of S to maintain neutrality. Hope this answers the question.
4 0
3 years ago
Other questions:
  • What is the balanced chemical equation for caffeine?
    9·1 answer
  • What are chemistry questions for high school students about atomic size trends?
    9·1 answer
  • What does this represent about the type of change
    8·1 answer
  • Bacteria are taken into cells by?
    6·1 answer
  • Based on the position of the elements in the periodic table, what is the charge of the ions they are most likely to form?
    5·1 answer
  • Question in the image
    13·1 answer
  • A fixed mass of a gas occupies 1000cm
    7·1 answer
  • Over the evolutionary history of a certain kind of fish, the trend is for an increasing number of teeth. The data table provides
    5·1 answer
  • Which color in the visible light spectrum has the lower frequency and less energy?<br> please help
    13·2 answers
  • Sarah measures out 151 grams of SO2. How many moles is this? Express your answer to three significant figures.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!