What are the two parts of an atom?the nucleus and the proton cloud
the neutron and the electron cloud
O the neutron and the proton cloud
O the nucleus and the electron cloud

Answers

Answer 1
Answer:

Answer:

the nucleus and electron cloud is the correct option


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When molten material hardens and cools, what type of rock is formed?
Help PLEASE :DElaborate on the changes in molecular motion of particles as they change from solid to liquid to gas.Question 16 options:This is the answer >>>>>>>>As the phase changes occur, the freedom of motion of the particles increases.As the phase changes occur, the freedom of motion of the particles decreases.As the phase changes occur, the freedom of motion of the particles compresses.As the phase changes occur, the freedom of motion of the particles is constant.
The main energy products currently being obtained from the ocean floor are oil and _____.

Although incineration can break down harmful chemicals, the byproduct is hazardous.a. True
b. False

Answers

Answer:  The given statement is true.

Explanation:

Incineration: It is a technique in which organic substance present in waste material is burned down to break them into its components.

For: Example : Burning of powder of wooden chips gives carbon dioxide gas ,nitrogen-dioxide in small amounts and heat energy.

Although incineration can break down harmful chemicals but the by-product formed are hazardous because:

  • Oxides of nitrogen and sulfurs are also released which pollutes the air and becomes the main cause for acid rains.
  • Green house gases are produced which disturbs the balance of atmosphere and climate.
  • Increases air pollution by which it becomes unfit to breathe in.
  • Also pollutes soil.

Hence, the given statement is true.

A, true is the answer and cluke u help me please

Determine the mass of oxygen in a 5.8 g sample of sodium bicarbonate (NaHCO3).

Answers

Answer is: the mass of oxygen is 3.31 grams.

m(NaHCO₃) = 5.8; mass of sodium bicarbonate.

n(NaHCO₃) = m(NaHCO₃) ÷ M(NaHCO₃).

n(NaHCO₃) = 5.8 g ÷ 84 g/mol.

n(NaHCO₃) = 0.07 mol; amount of sodium bicarbonate.

In one molecule of sodium bicarbonate there are three oxygen atoms:

n(NaHCO₃) : n(O) = 1 : 3.

n(O) = 3 · 0.07 mol.

n(O) = 0.21 mol.

m(O) = 0.21 mol · 16 g/mol.

m(O) = 3.31 g.

The crystal lattice structure of ionic compounds is responsible for which set of characteristic properties?

Answers

Answer:

The characteristic properties are hard and brittle solids having high melting and boiling point

Explanation:

Ionic compounds are the type of chemical compounds that are formed by ionic bonding. An ionic compound is composed of two oppositely charged ions that are held together by electrostatic forces of attraction.

They are solids at room temperature and usually have a crystalline structure and have high melting and boiling point. Ionic compounds are hard but also brittle.

If your using Plato the answer is E.

Which is true about models in science?A-Models are accurate enough for the phenomena they represent.
B-Models only present macroscopic versions of the submicroscopic.
C-Models help explain phenomena but are not good for predicting events.
D-Models are used throughout science although they are not always accurate.

Answers

D-Models are used throughout science although they are not always accurate.
I think c is the answer but I could be wrong..

What sequence of enzymes allows for the synthesis of glycogen from glucose-6-phosphate?a. UDP-glucose pyrophosphorylase, phosphoglucomutase, glycogen synthase, amylo-(1,4α1,6)-transglycosylase

b. phosphoglucomutase, UDP-glucose pyrophosphorylase, amylo-(1,4α1,6)-transglycosylase, glycogen phosphorylase

c. phosphoglucomutase, amylo-(1,4α1,6)-transglycosylase, UDP-glucose pyrophosphorylase, glycogen synthase

d. UDP-glucose pyrophosphorylase, phosphoglucomutase, amylo-(1,4α1,6)-transglycosylase, glycogen synthase

e. phosphoglucomutase, UDP-glucose pyrophosphorylase, glycogen synthase, amylo-(1,4α1,6)-transglycosylase

Answers

Answer:

The answer is (e) : phosphoglucomutase, UDP-glucose pyrophosphorylase, glycogen synthase then amylo-(1,4-1,6)-transglycosylase.

Explanation:

Phosphoglucomutase: Convert glucose-6-phosphate to glucose-1-phosphate.

UDP-glucose pyrophosphorylase:  Form UDP-glucose from glucose-1-phosphate.

Glycogen synthase: Add the new glucose from UDP-glucose to the growing glycogen chain.

Amylo-(1,4-1,6)-transglycosylase: This is a branching enzyme, it initiates formation of branches evolving from the main chain.

Which statement correctly describes a scientific theory?

Answers

a explaination of some aspect of the natural world obtained by the scientific method