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
marta [7]
3 years ago
9

The density of lead is 11.3

Chemistry
2 answers:
brilliants [131]3 years ago
8 0
Volume = 287 - 206 
v= 81 mL 

Mass= density x volume 
m = 11.3 x 81 
m = 915.3 g



wariber [46]3 years ago
8 0

Answer:

915 g

Explanation:

The volume of lead (V) is equal to the difference between the final level of water and the initial level of water.

V = 287 mL - 206 mL = 81.0 mL

The density of lead (ρ) is 11.3 g/mL. We can find the mass of lead (m), in grams, using the following expression.

ρ = m/V

m = ρ × V

m = 11.3 g/mL × 81.0 mL

m = 915 g

You might be interested in
3. Write DISSOCIATION or IONIZATION equations for the following chemicals:
Romashka [77]

Answer:

a) HNO3 -> H+ + NO3- disassociation of Nitric Acid; to yield a Nitrate ion and a Proton, H+, or as a Hydronium ion H3O+

b) H2S04 -> Disassociation of Sulfuric Acid; simple way- 2H+ + SO4- -

c) H2S hydrogen sulphide in water is an acid; thus H+ HS- disassociation.

d) NaOH -> dissociation of Na+ + OH-; this is complete; sodium hydroxide is deliquescent, meaning it will draw water - EVEN from the air! Strong Base

e) Na2CO3 -> 2Na+ CO3- - Ionization of sodium carbonate - a salt

f) Na2S04 -> 2Na+ + SO4 - - ionization of sodium sulphate - a salt

g) NaCl​ -> Na+ + Cl- ionization of the salt, Sodium Chloride

Explanation:

Salts ionize at different rates; acids or bases dissociate; these are mostly strong acids and NaOH, a strong base.

8 0
3 years ago
A stock solution of 1.00 M Fe2(SO4)3 is available. How many milliliters are
Andrews [41]

Answer:

375 mL

Explanation:

M1*V1 = M2*V2

M1 = 1.00 M

V1 = ?

M2 = 0.750 M

V2 = 0.500 L

1.00 M * V1 = 0.750 M * 0.500 L

V1 = 0.750*0.500/1.00 = 0.375 L = 375 mL

5 0
3 years ago
What is 93,000,000 in scientific notation?
DanielleElmas [232]
I believe it is 9.3x10^7
5 0
3 years ago
The radius of a hydrogen atom is 37 pm and its mass is 1.67 × 10-24 g. What is the density of the atom in grams per cubic centim
RoseWind [281]

Answer:

V = 4/3 * 3.1416 * (37x10-10)3

V = 2.12x10-25 cm3

d = m/V

d = 1.67x10-24 / 2.12x10-25 = 7.87 g/cm3

The difference in temperature, let's convert F to ºC:

ºC = -80-32/1.8 = -62.22 ºC

dT = -92.6 + 62.2 = -30.4 ºC

4 0
3 years ago
Read 2 more answers
What is the molarity of a NaOH solution if 28.2 mL of a 0.355 M H2SO4 solution is required to neutralize a 25.0-mL sample of the
Verdich [7]

Answer:

[NaOH} = 0.4 M

Explanation:

In a reaction of neutralization, we determine the equivalence point of the titration. In this case, we have a strong base and a strong acid.

(H₂SO₄, is considered strong, but the first deprotonation is weak)

2NaOH  +  H₂SO₄  →  Na₂SO₄  + 2H₂O

As we have 2 protons in the acid, we need 2 OH⁻ from the base to form 2 molecules of water.

In the equivalence point we know mmoles of base = mmoles of acid

Let's finish the excersise with the formula

25 mL . M NaOH = 28.2 mL  .  0.355M

M NaOH = (28.2 mL  .  0.355M) / 25 mL → 0.400

8 0
3 years ago
Other questions:
  • The greater a habitat's biodiversity, the greater will be the habitat's, sustainability over time with varying conditions sustai
    11·1 answer
  • The following characteristics describe which of these terms? The substance is mixed uniformly throughout and each part of the su
    8·2 answers
  • What is the mass number of an ion with 108 electrons, 157 neutrons, and a +1 charge?
    9·2 answers
  • Recall the postulates of kinetic molecular theory read the list and check all the statements that apply to behavior of an ideal
    15·2 answers
  • 4NH3(g) + 3O2(g) --> 2N2(g) + 6H2O(l)
    5·1 answer
  • Ca(OH) =CaO + H2O
    12·1 answer
  • HELP ME GUYS I NEED HELP RN
    13·1 answer
  • Color of the CuCl2 hydrate before heating:
    5·1 answer
  • What is the percent composition of the following <br> *KBr<br> *LiOH<br> *Mgl2<br> *Al2(SO4)3
    10·1 answer
  • 22.4 L of hydrogen is taken in a cylinder at zero degree Celsius and at one atm. This gas is transferred to a cylinder of 11.2 L
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!