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
Paladinen [302]
3 years ago
15

Find the effective resistance of the circuit

Chemistry
1 answer:
frozen [14]3 years ago
3 0
300 ohms as you can add the individual resistances together
You might be interested in
553.5 mL ?:cm^3<br> how do i get my answer? and what is the answer?
dmitriy555 [2]

Answer:

553.5 cm3

Reason:

1 mL = 1 cm3

6 0
3 years ago
Which substance is used to remove rust from metal
wel
<span>Chemically speaking, rust is a base and any acid will remove it. The choice of acid is going to be the thing to consider, since acid + base = salt and water. Phosphoric acid left a residue because the salt Iron phosphate is insoluble in water. Iron's soluble salts include the chloride, the sulfate and the nitrate. Industrially speaking, you need to "pickle" your iron. Pickling is a process in which dilute sulfuric acid is used to remove any surface corrosion prior to either painting or plating an iron surface. Sulfuric acid is ordinary battery acid and the salt Iron sulfate is not toxic. Sulfuric acid is one of the most common acids used (besides hydrochloric acid). The dilute kind is not terribly corrosive but concentrated sulfuric acid is a thick, syrupy liquid which can cause some nasty chemical burns if allowed to remain on the skin. It also heats up quite a lot when water is added, so this is an "Acid to water not water to acid" situation. The other choice is Hydrochloric acid, known as muriatic acid. The 20% concentrate is available in nearly any hardware store. It isn't as corrosive as concentrated sulfuric acid, but it has a burning, acrid stench, so never use the concentrate without adequate ventilation. It is ordinarily used to remove hard water deposits (boiler scale) but does a good on on rust as well. Concentrated Iron chloride isn't entirely inert but lots of rinsing will turn it back into harmless rust/sludge, especially if the rince water is naturally hard. Nitric acid will remove corrosion from anything, but it is extremely corrosive, smells worse then Hydrochloric acid and isn't easy to get, since it can be used to create some powerful explosives</span>
3 0
3 years ago
Read 2 more answers
11111111111111111111
Lady bird [3.3K]

Answer:

2222222222

Explanation:

mark me branliest of

5 0
3 years ago
Which incorrect aspect of Rutherford’s model was fixed by Bohr’s model?
dolphi86 [110]

Answer:

Some things that were wrong with Rutherford's model were that the orbiting electrons should give off energy and eventually spiral down into the nucleus, making the atom collapse. Bohr proposed his quantized shell model of the atom to explain how electrons can have stable orbits around the nucleus. To remedy the stability problem, Bohr modified the Rutherford model by requiring that the electrons move in orbits of fixed size and energy.

Explanation:

7 0
3 years ago
a sample of an unknown gas has a mass of 0.582g. it's volume is 21.3 mL a a temp of 100 degrees Celsius and a pressure of 754 mm
Zielflug [23.3K]

Answer:

Molar mass = 0.09 × 10⁴ g/mol

Explanation:

Given data:

Mass = 0.582 g

Volume = 21.3 mL

Temperature = 100°C

Pressure = 754 mmHg

Molar mass = ?

Solution:

(21.3 /1000 = 0.0213 L)

(100+273= 373 K)

(754/760 = 0.99 atm)

PV = nRT

n = PV/RT

n = 0.99 atm × 0.0213 L / 0.0821 atm. L. mol⁻¹. k⁻¹ × 373 K

n =0.02 mol/ 30.6

n = 6.5 × 10⁻⁴ mol

Molar mass = Mass/ number of moles

Molar mass = 0.582 g / 6.5 × 10⁻⁴ mol

Molar mass = 0.09 × 10⁴ g/mol

6 0
3 years ago
Other questions:
  • Which solution has the lowest freezing point?
    5·1 answer
  • In the chemical formula 2so2, how many total atoms of sulfur (s) are there? 1 2 4
    5·1 answer
  • Please help fast
    13·1 answer
  • On a planet where the temperature is so high, the ground state of an electron in the hydrogen atom is n = 4. What is the ratio o
    13·1 answer
  • 9.27 mol of oxygen is equal to______molecules of oxygen <br> Please help I need it
    10·1 answer
  • a child runs 60m race with an average speed of 4 m/s.how long did the child take to complete the race? give the correct unit for
    8·1 answer
  • A gas with a volume of 250 mL at a temperature of 293K is heated to 324K. What is the new volume of the gas?
    10·1 answer
  • 1.Which element would most likely lose electrons to form positive ions when bonding with other elements?
    9·1 answer
  • Amol has divided some substances into two groups as shown in the table below. He wants to further separate all the substances in
    12·2 answers
  • A protein has the amino acid sequence dsrlsktmysieapakldweqnmal how many peptide fragments would result from cleaving the sequen
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!