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
Iteru [2.4K]
3 years ago
5

SCICLUL CUCCIUCUCURUCUS

Chemistry
1 answer:
Evgesh-ka [11]3 years ago
7 0

Answer:

hi there!

the correct answer is atomic number 87, francium.

Explanation:

elements become more reactive as you go from the top left starting with hydrogen down to the bottom right

You might be interested in
Sodium carbonate (na2co3) is used to neutralize the sulfuric acid spill. how many kilograms of sodium carbonate must be added to
irga5000 [103]

Sodium carbonate is used to neutralised sulfuric acid, H₂SO₄. Sodium carbonate is the salt of stron base (NaOH) and weak acid (H₂CO₃). The balanced chemical reaction for neutralization is as follows:

Na₂CO₃ + H₂SO₄→ Na₂SO₄ + H₂CO₃

From balanced chemical equation, it is clear that one mole of Na₂CO₃ is required to neutralize one mole of  H₂SO₄. Molar mass of Na₂CO₃= 106 g/mol=0.106 kg/mol and molar mass of H₂SO₄= 98 g/mol=0.098 kg/mol.

To neutralize 0.098 kg of H₂SO₄ amount of Na₂CO₃ required is 0.106 kg, so, to neutralize 5.04×10³ kg of H₂SO₄, Na₂CO₃ required is=\frac{0.106 X 5.04 X 10^{3} }{0.098} kg= 5.451 X 10³ kg.

5 0
3 years ago
Indicate which element of the following pairs has the greater electronegativity
marta [7]

Answer:

sodium,silicon

Explanation:

sodium=11

siicon=14

5 0
3 years ago
The atomic mass of a atom (in amu) is equal to
kobusy [5.1K]
1.67377x10-27 kilogram(kg) or 1.67377x 10-24 gram(g)
5 0
3 years ago
Read 2 more answers
A student used 1.168g of an unknown weak acid and titrated it against 28.75 mL of 0.105M NaOH to reach the equivalence point. Wh
Vaselesa [24]

Answer:

The molar mass of the unknown acid is 386.8 g/mol

Explanation:

Step 1: Data given

Mass of the weak acid = 1.168 grams

volume of NaOH = 28.75 mL = 0.02875 L

Molarity of NaOH = 0.105 M

Since we only know 1 equivalence point, we suppose the acid is monoprotic

Step 2: Calculate moles NaOH

Moles NaOH = molarity NaOH * volume NaOH

Moles NaOH = 0.105 M * 0.02875 L

Moles NaOH = 0.00302 moles

We need 0.00302 moles of weak acid to neutralize the NaOH

Step 3: Calculate molar mass of weak acid

Molar mass = mass / moles

Molar mass = 1.168 grams / 0.00302 moles

Molar mass = 386.8 g/mol

The molar mass of the unknown acid is 386.8 g/mol

3 0
3 years ago
ANSWER FAST <br> is water wet? <br> a.) yes <br> b.) no<br> c.) a baby goat is a kid
Ksju [112]

Answer:

c

Explanation:

5 0
2 years ago
Other questions:
  • An electron has a velocity of 6.0  106 m/s in the positive x-direction at a point where the magnetic field has the components B
    8·1 answer
  • What do you think is the effect of acid rain on rusting ?
    11·1 answer
  • What is the resulting formula unit when magnesium and nitrogen bond
    7·2 answers
  • What the answer can y’all hell me
    14·1 answer
  • Which factor distinguishes a metallic bond from an ionic?
    12·1 answer
  • What salt is produced in hn o 3 (aq) koh(aq)→ h 2 o(l) ?
    11·1 answer
  • If the density is 0.1 g/cm^3 and the volume is 5cm^3, what is the mass?
    7·1 answer
  • A 125 mL bubble of hot gases at 213 ∘C and 1.77 atm is emitted from an active volcano. Part A What is the final temperature, in
    6·1 answer
  • The smooth endoplasmic reticulum is associated with the production of <br> ___
    7·1 answer
  • Does the percent by mass of each element in a compound depend on the amount of that element used to make the compound? Explain.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!