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
prisoha [69]
3 years ago
5

Organize the following metals from least metallic to most metallic :barium,zinc,iron, and strontium

Chemistry
1 answer:
kolezko [41]3 years ago
5 0
Zinc, Iron, Strontium, Barium
You might be interested in
Why might having mud in an ecosystem be important?
Aloiza [94]

An insect needs mud wallows to breed; that insect pollinates several flowers in that ecosystem.

3 0
3 years ago
A gas will stay dissolved in solution best
m_a_m_a [10]
A. (cold solutions hold on to their solutes better)
5 0
3 years ago
Calculate the moles of 12.354 grams of c6h12o6
gavmur [86]

The correct answer is 0.06857 moles.

C₆H₁₂O₆, that is, glucose has six carbons, twelve hydrogens, and six oxygen atoms. The atomic weight of C, H and O are as follows:

Six atoms of carbon = 6 × 12.01 g = 72.06 g

Twelve atoms of hydrogen = 12 × 1.008 g = 12.096 g

Six atoms of oxygen = 6 × 16.00 g = 96.00 g

So, the molar mass of C₆H₁₂O₆ is 72.06 g + 12.096 g + 96.0 g = 180.156 g.

It can also be written in the form as 180.16 g of C₆H₁₂O₆ is equal to 1 mole of C₆H₁₂O₆or 180.16 g/mole (as the molar mass)

Now, there is a need to find moles of 12.354 grams of C₆H₁₂O₆. So, the final conversion is:

12.354 g C₆H₁₂O₆ × 1 mole of C₆H₁₂O₆ / 180.16 g C₆H₁₂O₆

= 0.06857 moles

5 0
3 years ago
What is the pH at the equivalence point in the titration of a 25.7 mL sample of a 0.370 M aqueous nitrous acid solution with a 0
expeople1 [14]

Answer:

pH = 8.24

Explanation:

Nitrous acid (HNO₂) reacts with KOH, thus:

HNO₂ + KOH → KNO₂ + H₂O

Moles of HNO₂ are:

0.0257mL ₓ (0.370mol / L) = 0.00951moles.

In equivalence point, the complete moles of nitrous acid reacts with KOH producing potassium nitrite. There are needed:

0.00951mol ₓ (1L / 0.491mol) = 0.01937L ≡ 19.4mL of 0.491M KOH to reach equivalence point.

Total volume in equivalence point is: 19.4mL + 25.7mL = <em>45.1mL</em>

Potassium nitrite is in equilibrium with water, thus:

NO₂⁻ + H₂O ⇄ HNO₂ + OH⁻

Where equilibrium constant, Kb, is defined as:

Kb = 1.41x10⁻¹¹ = \frac{[OH^-][HNO_2]}{[NO_2]}

In equilibrium, molarity of each compound are:

[NO₂⁻]: 0.00951mol/0.00451L - X = 0.211M - X

[HNO₂]: X

[OH⁻]: X

<em>Where X is reaction coordinate</em>

Replacing in Kb:

1.41x10⁻¹¹ = \frac{[X][X]}{[0.211 -X]}

0 = X² + 1.41x10⁻¹¹X - 2.97x10⁻¹²

Solving for X:

X = -1.72x10⁻⁶ <em>FALSE ANSWER. There is no negative concentrations.</em>

X = 1.72x10⁻⁶. <em>Right answer.</em>

That means:

[OH⁻]: 1.72x10⁻⁶M

As pOH is -log [OH⁻] and pH = 14-pOH:

pOH = 5.76; <em>pH = 8.24</em>

3 0
3 years ago
PLEASE HELPPPP!!! IM BEING TIMED
Mrac [35]

Answer:

B)

Explanation:

This should be the correct answer, lmk if it's not

8 0
2 years ago
Read 2 more answers
Other questions:
  • A chemical reaction can start when enough activation energy is added to the reactants. Do you think the activation energy for ch
    11·2 answers
  • What is the molarity of a 2.0 L sodium hydroxide solution containing 10.0 grams of solute?
    9·1 answer
  • What protein molecules does DNA wrap around to form a nucleosome
    15·1 answer
  • When table salt is placed in water and stirred it dissolves and a clear liquid is obtained. This process is a
    12·1 answer
  • Using the following chemical reaction, perform the theoretical stoi
    14·1 answer
  • The exhaust gas from an automobile contains 1.5 percent by volume of carbon monoxide. What is the concentration of CO in mg/m' a
    12·1 answer
  • 16. Relevant information is knowledge that relates to the question.<br><br> True or false
    7·1 answer
  • 10. Give the number of protons, electrons, and neutrons in strontium-88.
    8·1 answer
  • The hybridisation of the central atom in ICL-2<br>a) sp.<br>b) sp2<br>c) sp3d d)sp3​
    10·1 answer
  • What does a line of best fir shows you in a a scatee plot
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!