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
Irina-Kira [14]
3 years ago
5

A moving van crew picks up the following items: a sofa that weighs 158 pounds, a chair that weighs 65.7 pounds, a piano that wei

ghs 3.8*10^2 pounds, and several boxes with a combined weight of 147.65 pounds. What total weight in pounds should be listed on the billing sheet? Express your answer in scientific notation.
Chemistry
1 answer:
fgiga [73]3 years ago
7 0
751.35lbs should be listed
You might be interested in
Which is the correct electron dot diagram for krypton (Kr)?
SCORPION-xisa [38]
Krypton is in group 18, and so it has 8 valence electrons. B is the answer
4 0
4 years ago
1.00 mole of an ideal gas at STP is cooled to -41°C while the
qwelly [4]

Answer:

V₂ = 18.13 L

Explanation:

Given data:

Mole of gas = 1 mol

Initial temperature = 273 K

Initial pressure = 1 atm

Final volume = ?

Final temperature = -41°C (-41+273 = 232 K)

Final pressure = 805 mmHg (805/760 = 1.05 atm)

Solution:

First of all we will calculate the initial volume of gas.

PV = nRT

V = nRT/P

V = 1 mol × 0.0821 mol.L/atm.K × 273 K / 1 atm

V = 22.4 L/atm / 1 atm

V = 22.4 L     ( initial volume)

Now we will determine the final volume by using equation,

P₁V₁/T₁ = P₂V₂/T₂

P₁ = Initial pressure

V₁ = Initial volume

T₁ = Initial temperature

P₂ = Final pressure

V₂ = Final volume

T₂ = Final temperature

Now we will put the values.

V₂ = P₁V₁ T₂/ T₁ P₂  

V₂ = 1 atm × 22.4 L ×  232 K / 273 K × 1.05 atm

V₂ = 5196.8 atm .L. K / 286.65 atm.K

V₂ = 18.13 L

5 0
3 years ago
Aluminum hydroxide + nitric acid ➡ aluminum nitrate + water
m_a_m_a [10]

Answer:

Chemical equation:

HNO₃ + Al(OH)₃   →  Al(NO₃)₃ + H₂O

Explanation:

Chemical equation:

HNO₃ + Al(OH)₃   →  Al(NO₃)₃ + H₂O

Balanced chemical equation:

3HNO₃ + Al(OH)₃   →  Al(NO₃)₃ + 3H₂O

Ionic equation:

3H⁺ + 3NO⁻₃(aq) + Al(OH)₃(s)   →  Al³⁺(aq) + 3NO₃⁻¹(aq) + 3H₂O(l)

Net ionic equation:

Al(OH)₃(s)  +  3H⁺(aq)     →  Al³⁺(aq) +  3H₂O(l)

The NO⁻₃ are spectator ions that's why these are not written in net ionic equation. The water can not be splitted into ions because it is present in liquid form.

Spectator ions:

These ions are same in both side of chemical reaction. These ions are cancel out. Their presence can not effect the equilibrium of reaction that's why these ions are omitted in net ionic equation.  

4 0
3 years ago
How has everyone been and nice to meet whoever else get's on here.
jeka57 [31]

Answer:

Hello everyone and thnx for points

Explanation:

6 0
3 years ago
1 Srcl (aq) + 1 H,60,(aq) → 2 HCl(aq) + 1 Srso (s)
Mrac [35]

Answer:

Mass = 245.72 g

Explanation:

Given data:

Mass of SrCl₂ react = ?

Mass of H₂SO₄ = 300.0 g

Solution:

SrCl₂  +  2H₂SO₄     →     2HCl + Sr(HSO₄)₂

Number of moles of H₂SO₄:

Number of moles = mass/molar mass

Number of moles =  300.0 g/ 98.079 g/mol

Number of moles = 3.1 mol

Now we will compare the moles of SrCl₂ and  H₂SO₄.

                   H₂SO₄         :       SrCl₂

                        2             :           1

                      3.1             :         1/2×3.1 = 1.55 mol

Mass of SrCl₂:

Mass = number of moles × molar mass

Mass = 1.55 mol × 158.53 g/mol

Mass = 245.72 g

3 0
3 years ago
Other questions:
  • An example of a pure metal with a hexagonal close-packed arrangement is
    6·1 answer
  • What is the Celsius equivalent of 212°f
    6·2 answers
  • Be sure to answer all parts. The thermal decomposition of phosphine (PH3) into phosphorus and molecular hydrogen is a first-orde
    9·1 answer
  • Which of the following statements is not true, according to the kinetic theory
    6·1 answer
  • I need help please please​
    13·1 answer
  • Enter the chemical formula for water. formula:
    15·2 answers
  • A standing wave is established on a string that is fixed at both ends. If the string is vibrating at its fundamental frequency,
    5·1 answer
  • Gauging yourself against others is acceptable in competitive sports.
    14·2 answers
  • Which Body system works alone to maintain homeostasis? (pls help)
    8·2 answers
  • HELP PLASE I NEED A's AND B's PLEASE
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!