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
Afina-wow [57]
2 years ago
12

Please help meeee ;-;

Chemistry
2 answers:
insens350 [35]2 years ago
7 0

Answer:

12:B 13: 5 m/s 14: 5 m/s

Explanation:

12: this is a position vs time graph, and that worded description matches the graph because the slope of a p vs t graph is the velocity

13: again, the slope of a position vs time graph is the velocity. 10m/2s = 5 meters a second or m/s

14: same thing. the object travels 30 m in 6 s so 30/6=5 m/s

Elena-2011 [213]2 years ago
3 0

Answer:

number (12 is c)  (13 is 5) (14 is 5)

Explanation:

You might be interested in
ASAP PLEASE HELP! how can you tell that the solution contains a weak acid?
Flura [38]

Answer:

This is week acid because it is not dissociated to its ions in water

Explanation:

6 0
3 years ago
Read 2 more answers
A 7.45 L container holds a mixture of two gases at 15 °C. The partial pressures of gas A and gas B, respectively, are 0.364 atm
kogti [31]

Answer:

stored and active

Explanation:

both cannot be thransformed into another type of energy

8 0
2 years ago
A common laboratory method for preparing a precipitate is to mix solutions containing the component ions. Does a precipitate for
laiz [17]

Answer:

CaF2 will not precipitate

Explanation:

Given

Volume of Ca(NO3)2 = 10 ml

Molar concentration of Ca(NO3)2 = 0.001

Volume of NaF = 10 ml

Molar concentration of  NaF  = 0.0001

Ksp for CaF2 = 3.2 * 10^ {-11}

CaF2 will precipitate if Q for the reaction is greater than ksp of CAF2

Moles of calcium ion

= 10 * 0.001\\= 0.01

[Ca2+] = \frac{0.01}{10 + 10} \\= \frac{0.01}{20} \\= 5 * 10^{-4}

Moles of F- ion

= 10 * 0.0001\\= 0.001

[F-] = \frac{0.001}{10 + 10} \\= \frac{0.001}{20} \\= 5 * 10^{-5}

Q = [Ca2+] [F-]^2\\= (5 * 10^{-4}) * (0.5* 10^-4)\\= 1.25 * 10^{-12}

Q is lesser than Ksp value of CaF2. Hence it will not precipitate

5 0
2 years ago
When do we classify a disease as epidemic
djyliett [7]

Explanation:

An epidemic (from Greek ἐπί epi "upon or above" and δῆμος demos "people") is the rapid spread of disease to a large number of people in a given population within a short period of time.

3 0
3 years ago
Read 2 more answers
Decide if the following definite article and noun agreement is CORRECT or INCORRECT <br> La mapa
GREYUIT [131]
It's el mapa so the answer is incorrect. Even though mapa has an 'a' at the end, you will still use el.
8 0
3 years ago
Read 2 more answers
Other questions:
  • 2 molecules of Acetaldehyde can only be made from which of these alkenes?
    5·1 answer
  • Balance the following chemical equation using the smallest set of integers. I₂ + Cl₂ + H₂O ---&gt; HIO₂ + HCl The coefficient on
    13·1 answer
  • Translate the skeleton chemical equation:
    9·1 answer
  • The chemical reaction between iron (Fe) and oxygen (O) results in the loss of electrons from iron. This reaction is an example o
    9·2 answers
  • A freshwater stream flows into the ocean as shown in the diagram which statement correctly describes how the stream affects thes
    7·2 answers
  • What is 3.8 times 3.8
    5·2 answers
  • Point give away number 5!
    6·2 answers
  • What determines how molecules are redistributed in diffusion?​
    13·1 answer
  • HELPPPPP. I NEED HELP. I NEED A CER ON THISSSS. I WILL PAY $5 or $10 I need help. Plzzzzz
    5·1 answer
  • I Need Help!!!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!