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
9966 [12]
3 years ago
6

HELP 20 Points? thank u guysssss

Chemistry
2 answers:
Leokris [45]3 years ago
7 0

Answer:

Chemical i think i tried googling to figure it out

Explanation:

Fudgin [204]3 years ago
3 0

Answer:

The answer is A. Chemical

Explanation:

Have a nice day

You might be interested in
12. In the modern periodic table, which of the following describes the elements with similar
V125BC [204]
B. same group I believe
8 0
3 years ago
Read 2 more answers
Complete and balance the following symbol equation, and add state symbols
erastovalidia [21]

Answer:

2NaOH + H2So4 》Na2So4+ 2H2O

Explanation:

SODIUM HYDROXIDE, 2NaOH IS (aq)

FULFURIC ACID, H2So4 IS (aq)

SODIUM SULFATE, Na2So4 IS (aq)

WATER,2H20 IS (l)

5 0
3 years ago
Help me please!!!!!!!!!!!!!!!
Alex787 [66]

Answer:

2KBr + MgF₂ –> 2KF + MgBr₂

The coefficients are: 2, 1, 2, 1

Explanation:

KBr + MgF₂ –> KF + MgBr₂

The above equation can be balance as illustrated below:

KBr + MgF₂ –> KF + MgBr₂

There are 2 atoms of F on the left side and 1 atom on the right. It can be balance by writing 2 before KF as shown below:

KBr + MgF₂ –> 2KF + MgBr₂

There 2 atoms of K on the right side and 1 atom on the left side. It can be balance by writing 2 before KBr as shown below:

2KBr + MgF₂ –> 2KF + MgBr₂

Now, the equation is balanced.

The coefficients are: 2, 1, 2, 1

8 0
2 years ago
2. Which of the following accurately pairs
My name is Ann [436]

Answer:

C. Electron-negative charge

Explanation:

The electron is subatomic particle that revolve around outside the nucleus and has negligible mass. It has a negative charge.

Symbol= e⁻

Mass= 9.10938356×10³¹Kg

It was discovered by j. j. Thomson in 1897 during the study of cathode ray properties.

He constructed the glass tube and create vacuum in it. He applied electric current between electrodes. He noticed that a ray of particles coming from cathode to wards positively charged anode. This ray was cathode ray.

Properties of cathode ray:

The ray is travel in straight line.

The cathode ray is independent of composition of cathode.

When electric field is applied cathode ray is deflected towards the positively charged plate.

Hence it was consist of negatively charged particles.

While neutron and proton are present inside the nucleus. Proton has positive charge while neutron is electrically neutral. Proton is discovered by Rutherford while neutron is discovered by James Chadwick in 1932.

Symbol of proton= P⁺

Symbol of neutron= n⁰

Mass of proton = 1.672623×10⁻²⁷ Kg

Mass of neutron = 1.674929×10⁻²⁷ Kg

An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.

All these three subatomic particles construct an atom.

8 0
3 years ago
What is the percentage of sodium presents in sodium hydrogen carbonate NaHCO3
STatiana [176]

Answer:-

27.38%

Explanation:-

Molecular weight of sodium hydrogen carbonate NaHCO3

= 23 x 1 + 1 x 1 + 12 x 1 + 16 x 3

= 84 gram

Total sodium Na present in NaHCO3 = 23 x 1 = 23 gram

Percentage of sodium present=

Total sodium x 100/ (Total molecular weight)

= 23 x 100 / 84

= 27.38 %

3 0
3 years ago
Other questions:
  • Heat required to raise 1 g of a substance 1°C
    8·1 answer
  • Part 1: What is a black dwarf? Part 2: What is the fate of Sol?
    14·1 answer
  • Evidence that best supports the theory of biological evolution was obtained from the
    5·1 answer
  • Explică rolul chimiei în protejarea mediului înconjurător?
    13·1 answer
  • You may remember that fresh water is the only type of water humans and animals can drink. For this reason, it is essential to li
    9·1 answer
  • A substance has a mass of 23.7g and a volume of 7.9ml. The density of the object is
    8·1 answer
  • N2(g) + 3H2(g) => 2NH3(g) Write the reaction again as a balanced reaction
    8·1 answer
  • Please help me I will give you 10 points​
    7·1 answer
  • An isotope of an element whose number of protons and neutrons place it on the edge of the Island of Stability is most likely
    7·1 answer
  • (Hurry ASAP!!!) There are 1.5 moles of methane (CH4) in a tank. It has a pressure of 4.4 atm at 173°C. Find the volume occupied
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!