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
Vinvika [58]
3 years ago
6

Calcium and sulfur Enter the ions formed by these elements and separate your answers with a comma (e.G., Sr2+,As3−).

Chemistry
1 answer:
iogann1982 [59]3 years ago
4 0

Answer:

Ca²⁺, S⁻²

Explanation:

Calcium (Ca) is a <u>metallic</u> element and belongs to <u>group II</u> of the Periodic Table. So, it can lose 2 electrons to form the positively charged ion Ca²⁺.

Sulfur (S) is a <u>non-metal</u> element, so it has the tendency to gain electrons and to form anions. It accepts two electrons to form the sulfide ion S²⁻.

You might be interested in
Diethyl ether is produced from ethanol according to the following equation:
juin [17]
The balanced chemical equation is given as:

2CH3CH2OH(l) → CH3CH2OCH2CH3(l) + H2O(l)

We are given the yield of  CH3CH2OCH2CH3 and the amount of ethanol to be used for the reaction. These values will be the starting point for the calculations.

Theoretical amount of product produced:
329 g CH3CH2OH ( 1 mol / 46.07 g ) ( 1 mol CH3CH2OCH2CH3 / 2 mol CH3CH2OH ) (74.12 g / mol ) = 264.66 g CH3CH2OCH2CH3 

% yield = .775 = actual yield / 264.66


actual yield = 205.11 g CH3CH2OCH2CH3
6 0
3 years ago
Which element would be the most reactive with K? Br, Na, Ar, or O? And how do you know?
kykrilka [37]
Ar I did this I think i got it right on edunuty
5 0
3 years ago
If you mix 50mL of 0.1 M TRIS acid with 60 mL of0.2 M<br> TRIS base, what will be the resulting pH?
Katyanochek1 [597]

<u>Answer:</u> The pH of resulting solution is 8.7

<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)}}

  • <u>For TRIS acid:</u>

Molarity of TRIS acid solution = 0.1 M

Volume of solution = 50 mL

Putting values in above equation, we get:

0.1M=\frac{\text{Moles of TRIS acid}\times 1000}{50mL}\\\\\text{Moles of TRIS acid}=0.005mol

  • <u>For TRIS base:</u>

Molarity of TRIS base solution = 0.2 M

Volume of solution = 60 mL

Putting values in above equation, we get:

0.2M=\frac{\text{Moles of TRIS base}\times 1000}{60mL}\\\\\text{Moles of TRIS base}=0.012mol

Volume of solution = 50 + 60 = 110 mL = 0.11 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{[salt]}{[acid]})

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

We are given:

pK_a = negative logarithm of acid dissociation constant of TRIS acid = 8.3

[\text{TRIS acid}]=\frac{0.005}{0.11}

[\text{TRIS base}]=\frac{0.012}{0.11}

pH = ?

Putting values in above equation, we get:

pH=8.3+\log(\frac{0.012/0.11}{0.005/0.11})\\\\pH=8.7

Hence, the pH of resulting solution is 8.7

6 0
3 years ago
An object was measured by a worker as
marusya05 [52]
<h2>Answer - 0.73%</h2>

14.6            .2

          =          

100              x

(Above is proportions I used to get the answer)

x = 0.73% which is the answer.

6 0
3 years ago
Read 2 more answers
What is the average speed of the car after 3 seconds
True [87]

Answer:

depends on the car lol

Explanation:

8 0
3 years ago
Other questions:
  • An optically active alkyne A (C10H14) can be catalytically hydrogenated to butylcyclohexane. Treatment of A with C2H5MgBr libera
    14·1 answer
  • Suppose m∠1 = 127°. Find the measures of the other angles.
    13·1 answer
  • Which is a characteristic of a mixture?
    12·1 answer
  • Which direction does air circulate into low pressure zones in the northern and southern hemisphere
    12·2 answers
  • Give an example of a mineral that is an element and a mineral that is not an element.
    13·1 answer
  • Select the correct answer.
    14·1 answer
  • A scientist is studying a sample of matter. The matter has no definite shape or volume, and it can conduct an electric current.
    12·2 answers
  • A student dissolves 3.9g of aniline (C6H5NH2) in 200.mL of a solvent with a density of 1.05 g/mL . The student notices that the
    5·1 answer
  • Oxygen
    12·2 answers
  • What makes up most of an atom?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!