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Mashcka [7]
3 years ago
15

What is the molarity of 0.540g Mg N,0. in 250 mL of solution?​

Chemistry
1 answer:
Sati [7]3 years ago
3 0

Answer:

2.16x10^-03

molarity=mass÷volume

0.540÷250

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2. Heliox is a mixture of gases and is used in medicine to help
yaroslaw [1]

Answer:

people with breathing problems such as severe asthma.

Explanation:

Heliox is a medical treatment for patients with difficulty breathing. The mixture generates less resistance than atmospheric air when passing through the airways of the lungs, and thus requires less effort by a patient to breathe in and out of the lungs.

4 0
3 years ago
How do plants and animals differ in how they get food?​
Vilka [71]
Animals get their food by preying on other species or scrounging for scraps they can find. Some eat other animals and some eat plants.
Plants get their food by absorbing minerals and water from the ground and absorbing carbon dioxide from the air through their leaves. They then also absorb sunlight and all of those components are made into food for the plant. Simple answer is through photosynthesis.
3 0
2 years ago
What subatomic particle has a negative charge and maintains an orbital cloud around the nucleus of the atom?
Anastaziya [24]

Answer:

Electron

Explanation:

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

Symbol= e⁻

Mass= 9.10938356×10⁻³¹ Kg

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

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=1.672623×10⁻²⁷Kg

Mass of neutron=1.674929×10⁻²⁷Kg

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.

7 0
3 years ago
What is the cation and anion of NaOH
Wewaii [24]

Answer:

naoh is called sodium hydroxide,

Explanation:

hope this helps

6 0
3 years ago
Read 2 more answers
Choose the products that complete the reaction NaHCO3+HC2H3O2
Novosadov [1.4K]

Answer:

The products will be;

CO₂ + H₂O + NaC₂H₃O₂

Explanation:

We are given;

Two reactants NaHCO₃ and HC₂H₃O₂

We are supposed to determine the products;

  • We need to know that hydrogen carbonates reacts with acids to give water, carbon dioxide and a salt as the products.

Therefore;

  • In this case, sodium hydrogen carbonates (baking soda) reacts with acetic acid to form water, carbon dioxide and sodium acetate.
  • The equation for the reaction is;

      NaHCO₃ + HC₂H₃O₂ → CO₂ + H₂O + NaC₂H₃O₂

  • Therefore, the products of the complete reaction between sodium hydrogen carbonate and acetic acid are CO₂ + H₂O + NaC₂H₃O₂
3 0
3 years ago
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