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
natulia [17]
3 years ago
7

If a color change occurs when two solutions are mixed is it true that a chemical react has probably taken place?

Chemistry
2 answers:
nika2105 [10]3 years ago
8 0

Answer:

Yes it is true

Explanation:

It is most likely a change has occurred with the PH of the solutions and it is a common indicator of a chemical reaction.

Phoenix [80]3 years ago
3 0

Answer: yes

Explanation: When you mix an acid an a base the color it showing a chemical change.

You might be interested in
in rutherford's gold foil experiment a very small number of alpha particles were deflected. what about the structure of the atom
zvonat [6]

Answer:The atom being mostly empty space. A small number of alpha particles were deflected by large angles (> 4°) as they passed through the foil. There is a concentration of positive charge in the atom. Like charges repel, so the positive alpha particles were being repelled by positive charge

8 0
3 years ago
3. In an experiment it was found that 40.0cm of 0.2M sodium hydroxide solution just neutralized 0.2g
hjlf

The relative molecular mass of acid A : 50 g/mol

<h3>Further explanation</h3>

Given

40.0 cm³(40 ml) of 0.2M sodium hydroxide

0.2g  of a dibasic acid

Required

the relative molecular mass of acid A

Solution

Titration formula

M₁V₁n₁=M₂V₂n₂

n=acid/base valence(number of H⁺/OH⁻)

NaOH ⇒ n = 1

Dibasic acid =  diprotic acid (such as H₂SO₄)⇒ n = 2

mol = M x V

Input the value in the formula :(1 = NaOH, 2=dibasic acid)

0.2 x 40 x 1 = M₂ x V₂ x 2

M₂ x V₂ = 4 mlmol = 4.10⁻³ mol ⇒ mol of Acid A

The relative molecular mass of acid A (M) :

\tt M_A=\dfrac{mass }{mol}=\dfrac{0.2~g}{4.10^{-3}}=50~g/mol

5 0
3 years ago
An element that has 2 core electrons and 3 valence electrons
gavmur [86]

Answer:

Boron

Explanation:

You can find this by looking at the number of protons in Boron, 5.

Then calculate how many electrons you are given, in this case the 2 core plus the 3 valence equal 5 total electrons

Neutral elements have the same number of protons and electrons, so your answer would be the element with 5 electrons, Boron.

You can also know this by using electron configuration. Since you kow there are 5 electrons then you can use EC to find out where your element is. In this case it is: 1s2 2s2 2p1

6 0
2 years ago
How many neutrons in an atom of 30p? O a. 17 O b. 30.974 O c. 15 O d. 14 O e. 16
jeyben [28]

Answer:

The correct option is: c. 15

Explanation:

Phosphorous is a chemical element which belongs to the group 15 of the periodic table and has atomic number 15. It is a highly reactive non-metal of the p-group.  

Since, atomic number of an atom is the number of electrons and number of protons for neutral atoms.

So, the number of protons = number of electrons = 15

The atomic mass is obtained by adding the number of neutrons and the protons.

So, number of neutrons + number of protons = 30

So, number of neutrons + 15 = 30

Therefore, the number of neutrons in ³⁰P = 15

6 0
3 years ago
What keeps molecules together in a liquid and stops them from becoming a gas?
zysi [14]

Answer:

intermolecular interactions

Explanation:

hope this helps

7 0
2 years ago
Other questions:
  • How many atoms are in 4 Al2(SO3)3
    15·1 answer
  • Particles very far apart a solid liquid or gas
    10·2 answers
  • How much energy is absorbed when 15g of water at 100C boiled away?
    13·1 answer
  • Hurry!!!!! Will Give Brainlist!!!!
    8·2 answers
  • What animals are in the Arctic Tundra?
    10·2 answers
  • The galvanic cell illustrated above generates a potential of +1.10V. For the construction of a second galvanic cell (not shown),
    6·1 answer
  • If you place a weighing boat (0.229 g) on the balance, hit the tare/zero button, weigh 0.678 g of NaCl, then remove everything f
    15·2 answers
  • how many grams of silver medal could be recovered from a reaction of 50 g silver nitrate and copper metal
    14·1 answer
  • A bicycle is traveling at 14 miles per hour. How many feet will it cover in 55 seconds? Round your answer to the nearest tenth o
    7·1 answer
  • Match each interaction type to the correct amount of potential energy.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!