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2 years ago

HELP PLEASE !!! Name the gas formed when Magnesium metal reacts with hydrochloric acid

Chemistry

1 answer:

Mrrafil [7]2 years ago

6 0

Answer:

<h2>hydrogen gas is produced .</h2>

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Changes in the environment that cause an organism to respond are called?

slega [8]

Answer:

Anything in the environment that causes a change is called a stimulus.

Explanation:

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3 years ago

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Imagine a small synthetic vesicle made from pure phospholipids enclosing an interior lumen containing 1 mM glucose and 1 mM sodi

Alexeev081 [22]

Answer:

C. H2O diffuses in.

Explanation:

The phospholipids-made synthetic vesicle in this case will act like a semi-permeable membrane while the solution in the interior lumen will be hypertonic to the surrounding pure water.

Hence, water molecules will diffuse into the lumen through the semi-permeable membrane because of the osmotic gradient that exist between the internal and the surrounding solution of the vesicle.

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3 years ago

What happens to isotopes that are unstable?

Lesechka [4]

Explanation:

Isotopes are defined as the chemical species of the same element which differs in the number of neutrons. The isotopes which are unstable are known as radioactive isotope. A radioactive (unstable )isotope can undergo 3 decay process:

1. Alpha Decay: In this decay process, a larger nuclei decays into smaller nuclei by releasing alpha particle. The particle released has a charge of +2 and a mass of 4 units.

$_Z^A\textrm{X}\rightarrow _{Z-2}^{A-4}Y+_2^4\alpha$

2. Beta-minus decay: In this decay process, a neutron gets converted into a proton and an electron. the particle released during this process is a beta-particle.

$_Z^A\textrm{X}\rightarrow _{Z+1}^A\textrm{Y}+_{-1}^0\beta$

3. Beta-plus decay: In this decay process, a protons gets converted into a neutron and electron-neutrino particle. The particle released during this process is a positron particle.

$_Z^A\textrm{X}\rightarrow _{Z-1}^A\textrm{Y}+_{+1}^0\beta$

Isotopes which are unstable in nature can undergo these 3 decay processes.

5 0

3 years ago

How many grams of aluminum in required to produce 17.5 g of hydrogen

azamat

Mass of Aluminum = 157.5 g

<h3>Further explanation</h3>

Given

17.5 g of Hydrogen

Required

Mass of Aluminum

Solution

Reaction

2Al + 3H₂SO₄ → Al₂(SO₄)₃ + 3H₂

mol Hydrogen :

= mass : molar mass

= 17.5 g : 2 g/mol

= 8.75

From the equation, mol Al :

= 2/3 x mol H₂

= 2/3 x 8.75

= 5.83

Mass Al :

= 5.83 x 27 g/mol

= 157.5 g

6 0

3 years ago

4. Why are plastic blocks good for modeling molecules?

krok68 [10]

I think it's B

lol sorry I'm not sure with my answer

7 0

2 years ago