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
velikii [3]
4 years ago
9

PLEASE NEED HELP!!!!!

Chemistry
1 answer:
Andre45 [30]4 years ago
4 0

Either reject or validate your hypothesis.

You might be interested in
0.103 g of Zn(s) is combined with 50.0 mL HCl in a reaction vessel, the temperature changes from 22.5oC to 23.7oC. What is the Δ
Margarita [4]
Given:

0.103 grams of Zinc (solid) 
50 ml of HCl
Density of HCl = 1.0 g/mL
Initial Temperature (Ti) = 22.5 C
Final Temperature (Tf) = 23.7 C

Solve for the mass of HCl:

50 mL * 1.0 g/mL = 50 g

Assume that the Cp for HCl is similar to the Cp of water:

q = mCpdT
   = mCp (Tf - Ti) 
   = 50 g * 4.18 J/gC * (23.7 - 22.5)
q = 250.8 J = H
6 0
4 years ago
Dan bikes 10 km west and then bikes another 5 km west. What is Dan's
777dan777 [17]
C

This is because 10+5=15
15/45=0.3
4 0
3 years ago
How many atoms are in 1.0 formula units of magnesium acetate?
Ray Of Light [21]

Answer:

15

Explanation:

Magnesium Acetate Mg(C2H3O2)2

Number of atoms:

Carbon = 4

Hydrogen = 6

Magnesium = 1

Oxygen = 4

Total = 15

7 0
3 years ago
How many moles are in 60.05 g of carbon
Brrunno [24]

Answer:

moles =60.05/12

moles=5.0041

moles=5(approx)

5 0
3 years ago
Which statement best describes nuclear binding energy
tia_tia [17]
When the protons and neutrons combine to form a nucleus, the mass that disappears
6 0
4 years ago
Other questions:
  • Periodic law states that when the elements are arranged according to their atomic numbers, this allows elements with similar pro
    14·2 answers
  • ____is used as anode for prevention of corrosion 1 aluminium 2 magnesium 3 iron
    9·1 answer
  • Is a tree getting struck by lightning a physical or chemical change?
    9·1 answer
  • 2. Which of the following is not a physical property of water? It is a colorless liquid. It is composed of hydrogen and oxygen.
    7·1 answer
  • which is the best example of rotational motion? A. The wheel spins as long as the hamster keeps running. B. The tornado left a t
    15·2 answers
  • What happens to the composition of an atom to cause it to become positively or negatively charged?
    10·1 answer
  • Select the correct answer.
    12·2 answers
  • NEED HELP ASAP PLEASE
    6·2 answers
  • What mass of H₂ is needed to react with 8.75 g of O₂ according to the following equation: O2(g) + H2(g) → H₂O(g)?
    11·1 answer
  • Pure elemental gases, such as O2 and N2, have very low melting points. At around -220°c. What is one reason that this is the cas
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!