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
Vladimir79 [104]
2 years ago
15

A woman weighing 450 Newtons sits on the floor. She exerts a force on the floor of

Chemistry
1 answer:
ANEK [815]2 years ago
4 0

Answer: let me figure it out rlly quick

Explanation:

You might be interested in
1. 2Na + 2HCl --> 2NaCl + H2
snow_tiger [21]

Answer:

                 

Explanation:

4 0
2 years ago
Read 2 more answers
A glass blower can bend and shape a piece of glass that has been heated. Is glass a crystalline or an amorphous solid?
zavuch27 [327]

it would be a crystalline solid, because it could be extended in multiple directions.

5 0
3 years ago
A solution is made by combining 500 mL of 0.10 M HF (Ka=7.2 x 10^-4) with 300 mL of 0.15 M NaF. What is the pH of the resulting
n200080 [17]

Answer:

b) 3.10

Explanation:

HF ⇄ H + + F

Using Henderson-Hasselbalch Equation:

pH = pKa + log [A-]/[HA].

Where;

pKa = Dissociation constant = -log Ka

Hence, pKa of HF = -log 7.2 x 10^-4 = 3.14266

[A-] = concentration of conjugate base after dissociation = moles of base/total volume

          = 0.15 x 0.3/0.8

               = 0.05625 M

[HA] = concentration of the acid = moles of acid/total volume

             = 0.10 x 0.5/0.8

                    = 0.0625 M

Note: <em>Total volume = 500 + 300 = 800 mL = 0.8 dm3</em>

pH = 3.14266 + log [0.05625/0.0625]

      = 3.14267 + (-0.04575749056)

           = 3.09691250944

<em>From all the available options below:</em>

<em>a) 2.97 </em>

<em>b) 3.10 </em>

<em>c) 3.19 </em>

<em>d) 3.22 </em>

<em>e) 3.32</em>

The correct option is b.

4 0
3 years ago
Physical properties of reactants: Physical properties of products: 12.
dolphi86 [110]

Answer: The reactants are baking soda and vinegar. Baking soda is a white powder, and vinegar is a clear liquid. The products of this reaction are carbon dioxide, water, and sodium acetate. Carbon dioxide is a colorless gas, water is a colorless liquid, and sodium acetate is a white crystalline powder.

A chemical change can be seen in how the molecular formulas of the products are different from the reactants, since the reactants have chemically changed into completely different molecules.

Hope this helps

6 0
3 years ago
PLS HELP Identify the 4 ways minerals form and provide a brief description.
SpyIntel [72]

Answer:

hmmmmm very good question . igneous, or magmatic, in which minerals crystallize from a melt

sedimentary, in which minerals are the result of sedimentation

Heat and pressure

As hot water within Earth’s crust moves through

rocks, it can dissolve minerals. W

Explanation:

4 0
2 years ago
Other questions:
  • How many significant figures are there in the measurement 0.003kg
    8·1 answer
  • A scientist is tracking an object orbiting the sun that is found between mars and Jupiter. Which additional feature can be used
    10·1 answer
  • What’a the structure of 4-ethyl-2,2-dimethylheptane?
    6·1 answer
  • What is a bowl-shaped crater thought to<br> be caused by the collapse of an empty<br> magma chamber?
    15·1 answer
  • The solubility of CaF2 is 0.00021 mole per liter. What is the solubility product constant for CaF2? A) 7.3 x 10-12 B) 3.7 x 10-1
    11·1 answer
  • Sheet may help you to answer
    6·1 answer
  • Melting can be best described as a process in which molecules?
    11·2 answers
  • As current flows through a system, what happens to the voltage available at each load?
    9·1 answer
  • If there is 3% freshwater available on earth, approximately what percentage of it is in ice?
    6·2 answers
  • What type of system is best used to observe conservation of matter because all of the mass stays in one place?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!