Scientists test a hypothesis by?

Answers

Answer 1

Answer: They test the hypothesis by experimentation.

Related Questions

A solution of copper sulfate (CuSO4) produced by bioleaching has a concentration of 0.319 g/dm3 Relative atomic masses (Ar): Cu = 63.5 O = 16 S = 32 Calculate the number of moles of copper that can be produced from 1 dm3 of this solution.
The lewis structure of n2h2 shows __________.a.a nitrogen-nitrogen triple bondb.a nitrogen-nitrogen single bondc.each nitrogen has one nonbinding electron paird.each nitrogen has two nonbinding electron pairse.each hydrogen has one nonbonding electron pair
How many grams of water are produced when 2.50 mol oxygen reacts with hydrogen?
What is a chemical bond?a. a representation of chemical propertiesb. a substance that's composed of atomsc. the force that holds together the elements in a compoundd. the attraction of two atoms that holds the atoms togethe?
According to the periodic table, which statement correctly describes the change from a neutral atom of an element to its ion?

A chemistry teacher adds 50.0 mL of 1.50 M H2SO4 solution to 200 mL of water. What is the concentration of the final solution? A)0.300 M B)0.375 M. C)6.00 M. D)7.50 M.

Answers

this is a dilution equation where 50.0 mL of 1.50 M H₂SO₄ is taken and added to 200 mL of water.

c1v1 = c2v2

where c1 is concentration and v1 is volume of the concentrated solution

and c2 is concentration and v2 is volume of the diluted solution to be prepared

50.0 mL of 1.50 M H₂SO₄ is added to 200 mL of water so the final solution volume is - 200 + 50.0 = 250 mL

substituting these values in the formula

1.50 M x 50.0 mL = C x 250 mL

C = 0.300 M

concentration of the final solution is A) 0.300 M

Answer: 0.300M

Explanation:

1) Data:

a) Initial solution

M = 1.50M

V = 50.0 ml = 0.050 l

b) Solvent added = 200 ml = 0.200 l

2) Formula:

Molarity: M = moles of solute / volume of solution is liters

3) Solution:

a) initial solution:

Clearing moles from the molarity formula: moles = M × V

moles of H₂SO₄ = M × V = 1.5M × 0.050 l = 0.075 mol

b) final solution:

i) Volumen of solution = 0.050 l + 0.200l = 0.250l

ii) M = 0.075 mol / 0.250 l = 0.300M ← answeer

Would precipitation occur when 500 mL of a 0.02M solution of AgNO3 is mixed with 500 mL of a 0.001M solution of NaCl? Show your work.

Answers

We know,
AgNO3 + NaCl ⇒ NaNO3 + AgCl(s)
The moles of Na+ present:
0.5 L * 0.001 mol/L
= 5 x 10⁻⁴ mol
Moles of Ag+ present:
0.5 * 0.02
= 0.01 mol
The limiting reactant is Na
Therefore, the moles of Ag reacted:
5 x 10⁻⁴
AgCl is insoluble in water; therefore, the AgCl formed will precipitate

How do you think the law of conservation of mass affects chemical equations?

Answers

Answer:

,dgeh

Explanation:

Speed of sound is greater in aluminum or steel quora . True or False

Answers

Answer:

False.

Explanation:

False. The speed of sound is greater in aluminum than in steel.

A plant fertilizer contains 13 % by mass nitrogen ( n ). in a container of soluble plant food, there are 10.0 oz of fertilizer. how many grams of nitrogen are in the container?

Answers

There are 36.955 grams of nitrogen in the container.

Why it is that evaporation causes cooling,but boiling causes heating?

Answers

in evaporation due to internal heat, kinetic energy of molecules increases and they come to the top and take out that heat with them when they evaporate thus causes cooling
in boiling as heat is given to the molecules so their kinetic energy increases and they start vibrating with great energy and thus causes heating

During evaporation, particles which have a high kinetic energy come out of the body by gaining heat due to which there is a cooling effect on the particle of the body itself. that is why, evaporation causes cooling. For example: sweating

Other Questions

Which of the following elements is an alkali metal? potassium (K) calcium (Ca) chromium (Cr) germanium (Ge)

Which is the best example of water regulating an organism’s body temperature?

chlorine and element x have similar chemical properties an atom of element x could have an electron configuration of

Which sequence describes the result of increasing the number of gas particles in a container? A.) fewer collisions --> lower collision force --> lower pressure B.)more collisions --> lower collision force --> lower pressure. C.) fewer collisions --> greater collision force -->higher pressure. D.)more collisions --> greater collision force --> higher pressure