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
Snezhnost [94]
3 years ago
12

Considering the IMA of this frictionless inclined plane, how much force is required to drag a 90 lb. box up it?

Chemistry
1 answer:
astra-53 [7]3 years ago
4 0
I bileve the answer is b
You might be interested in
What quantity in moles of HCl are there in 35.0 mL of 0.350 M HCl?
marta [7]

Answer:

0.0123 moles

Explanation:

Concentration = Moles / Volume of solution

or you can rearrange the formula to get

Moles = concentration (moles/liter)  x  volume of solution (liter)

First convert your volume to L instead of mL.  35mL = 0.035L

moles  =  0.350 moles/liter   x    0.035 liter  (liters cancel out)

moles = 0.0123

5 0
3 years ago
Write the net ionic reaction that occurs upon the addition of hno3 to a solution which contains methylamine (ch3nh2) and methyla
ra1l [238]
Hello!

First, HNO₃ dissociates in the following way:

HNO₃(aq) → H⁺(aq) + NO₃⁻(aq)

Next, there is a neutralization reaction with Methylamine:

H⁺(aq) + CH₃NH₂(aq) → CH₃NH₃⁺(aq)

Finally, the formed methylammonium ion weakly dissociates in the following way:

CH₃NH₃⁺(aq) + H₂O(l)  ⇄ H₃O⁺(aq) + CH₃NH₂ (aq)

From this sequence of reactions, we can see that the resulting solution would be slightly more acidic than the initial one, as the buffer solution resists the addition of strong acid.

Have a nice day!
4 0
3 years ago
Read 2 more answers
sample of saline contains 45 ml of saline in 128 ml of water. What is the percent by volume of the solution?
lana66690 [7]
63ldldldkddldlmdndnj djd dr djd did d ddnjddd
4 0
3 years ago
(PLEASE ANSWER + BRAINLIEST !!)
MatroZZZ [7]
A gamma ray has a mass and atomic number of 0 meaning it doesn’t effect the nucleus.
E.g
60 60 0
Co —> Co + gamma ray
27 27 0

7 0
3 years ago
The presence of which of the following substances can allow a chain reaction to happen?
vlada-n [284]

Answer:

im not sure either B or D b is the only one with evidence

Explanation:

Most chemical chain reactions have very reactive intermediates called free radicals. The intermediate that maintains the chain reaction is called a chain carrier. These atoms or fragments are usually derived from stable molecules due to photo- or heat-dissociation

5 0
3 years ago
Other questions:
  • All rocks follow the same pathway through the rock cycle is a fake statement why
    5·2 answers
  • In the reaction Mg(s) + 2HCl(aq) → H2(g) + MgCl2(aq), how many moles of hydrogen gas will be produced from 250.0 milliliters of
    10·2 answers
  • How does knowing a great deal about the property of certain elements help us as humans?
    8·2 answers
  • Objects that are able to fall have what type of energy?
    14·1 answer
  • Which of the following could be considered a scientific statement? (2 points) ​
    13·1 answer
  • Regarding the Lyman series of hydrogen, calculate the frequency of the n = 5 line.
    7·1 answer
  • Why do plants need sunlight for photosynthesis?
    11·2 answers
  • 1. Fill in the blanks. Example: A nitrogen atom takes on a 3- charge when it forms an anion and becomes nitride. a. A magnesium
    15·1 answer
  • What caused Hawaii to form?<br> a tsunami<br> a hot spot<br> an earthquake<br> the San Andreas fault
    12·2 answers
  • What are the intermolecular forces between molecules in a liquid sample of sulfur trioxide, SO3?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!