Iron (II) chloride
Covalent or ionic

Answer:

yes

Explanation:

because I think it is correct fo u

According to law of conservation of mass.

In a chemical reaction Mass is neither created nor destroyed.

#1

Mass of water

[tex]\\ \sf\longmapsto 30+120=150g[/tex]

#2

Mass of sulphur:-

[tex]\\ \sf\longmapsto 136.9-111.6=25.3g[/tex]

Answer:

Fertilization

Explanation:

Fertilization occurs when the nucleus of both a sperm and an egg fuse to form a diploid cell, known as zygote. The successful fusion of gametes forms a new organism.

Answer:

relative proportions of the elements in a chemical reaction

A molecule or a compound can easily be represented by their formula.Subscripts in chemical formulas are used to indicate the relative proportions of the elements in a compound.

A chemical formula represent the identity and number of elements in a molecule or compound. Each element in periodic table has their own symbols. For example, hydrogen is H, oxygen having O, N for nitrogen, Na for sodium etc.

These chemical symbols are came from the first one or two letters of the Latin names of the elements. The number of these elements in a compound is given as subscripts of their symbols.

For example, there are two hydrogens and one oxygen in  water and the formula is H₂O. Similarly the formula of carbon dioxide is CO₂ where one carbon and two oxygens are present. In this way the compounds can be easily identified and distuinguished using their chemical formulas.

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Answer:

White-Blue-Red-Yellow-Orange

Explanation:

The sun emits all colors of the rainbow more or less evenly.

⚠️ I'm not 100% sure but for sure there is White ⚠️

Answer: write the solubility equilibrium and the solubility-product constant expression for the slightly soluble salt CaF2 CaF2 (s) <---> Ca2+ (aq) + 2F- (aq) Ksp=[Ca2+][F-]2.

Explanation:

Drop it into water. Measure the time required for tablet to fully dissolve. Be prepared to start and stop on time. The reaction will take less than 15 seconds.Answer:

Explanation:

Answer:

[tex]N2[/tex]

Explanation:

Because  

Molecular nitrogen (N2) is a very common chemical compound in which two nitrogen atoms are tightly bound together.

Answer:

The answer is B. False

Explanation:

Answer: its a compound

Answer:

to obtain a full outer shell

Explanation:

The atoms of some elements share electrons because this gives them a full valence shell. ... If atoms can't achieve a full outer shell by transferring electrons, they resort to sharing. In this way, each atom can count the shared electrons as part of its own valence shell. This sharing of electrons is covalent bonding.

Atoms generally exchange or share electrons during bonding because they want to obtain a full outer electron shell. Thus, the correct option for this question is A.

Chemical bonding may be defined as a type of interaction that is significantly accomplished through the association of atoms into molecules, ions, crystals, and other stable species that make up familiar substances.

According to the context of this question, the atoms of some elements typically transfer their electrons to the other elements in order to achieve a fully filled outermost shell.

If they do not have a tendency of transferring, they follow a different mechanism of sharing their electrons. The sharing of electrons gives rise to the formation of covalent bonding.

Therefore, atoms generally exchange or share electrons during bonding because they want to obtain a full outer electron shell. Thus, the correct option for this question is A.

To learn more about Sharing and transferring electrons, refer to the link:

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Answer:

Earnest Rutherford

Explanation:

From what I beleive, Rutherford had created the nuclear model

Answer:

o232

Explanation:

Answer:

Beryllium-8 (8Be, Be-8) is a radionuclide with 4 neutrons and 4 protons. It is an unbound resonance and nominally an isotope of beryllium. It decays into two alpha particles with a half-life on the order of 10−16 seconds; this has important ramifications in stellar nucleosynthesis as it creates a bottleneck in the creation of heavier chemical elements. The properties of 8Be have also led to speculation on the fine tuning of the Universe, and theoretical investigations on cosmological evolution had 8Be been stable.

Explanation:

Answer:

The prediction of the student about the amount of reactant and product is incorrect.

No, I do not agree with the student’s prediction because the amount of reactant is always equals to the amount of product. According to the Law of Conservation of Mass, mass cannot be created nor destroyed. Therefore in any chemical reaction the mass of the products must equal or same to the mass of the reactants so according to this law, the prediction of the student is incorrect.

Explanation:Give brailiest please

Answer:

The chemical reaction that occurs when vinegar and baking soda (sodium bicarbonate) are combined, creates a gas that is known as carbon dioxide (or CO2). I would agree with the student's prediction because the atoms rearrange themselves to create the product.

Explanation:

Hope this helps! Pls give brainliest!

Answer: Physical properties of matter include color, hardness, malleability, solubility, electrical conductivity, density, melting point, and boiling point. For the elements, color does not vary much from one element to the next

Answer:

Physical properties of matter include;

[tex].[/tex]

Answer:

1. Hypnosis can help people stop smoking.(Yes)

To what extent does hypnosis work in regards to these behaviors?

A study by McNeilly and colleagues found that hypnosis may help quitters to focus on their own resources to curb cigarette cravings. Other researchers have suggested that success rates are caused by the relaxation effects of hypnosis. These might allow people to cope with nicotine addiction and nicotine withdrawal.

Would you recommend them? Why or why not?

I wouldn't recommend it because, The evidence for hypnosis as a successful smoking cessation method is a mixed bag. Some studies have seen high success rates, whilst others are more modest. A review of 59 different trials found that hypnosis is often better than no support at all.( so its a risk)

Explanation:

Answer:

1. Mixtures

2. Different

3. Manipulations

4. Magnet

5. Filtration

6. Liquid

7. Evaporation

Answer:

help me mark me as a brinliest

Explanation:

microfilaments are composed of repeating actin subunits in a thin double-helix arrangement.

Answer:

Alloys are often stronger and less active than pure metals. Alloys have higher melting point than pure metals.

Answer:

heterogeneous

Explanation:

have you ever started to eat veg soup and begin with a spoon full of broth, no veggies,

Then when you get to the end, there are veggies. no broth.

In a homogeneous  mixture, every sample is the same

in a heterogeneous mixture, the composition changes from sample to sample

Answer:

2. A. solution

3. C The mass is different, but the melting behavior is the same

No not at all because of its size and the amount of speed from the car. then the impact will be bad

Answer:

Wave is a disturbance or energy that propagate through medium from one point to other point

So basically it is a flowing energy that flows into the medium and hence medium particles start oscillating about their mean position to and fro.

This motion of medium particles or this to and fro motion is about their mean position and this will always be cyclic or periodic motion

This means the disturbance or energy continuously flow through the medium such that it will change the position of medium particle and this will be cyclic in order

For an example

y(x,t) = Asin(kx - ωt + φ)

So here above equation of wave is a travelling wave in which displacement of medium particle from its mean position is given by "y"

Now we can see that this disturbance depends upon the sine function and it will repeat its same position after every 2 pi time interval as it is cyclic function for this value

Due to this phenomenon of repetition of its same position we can say that it is disturbance of wave is cyclic.

Explanation:

Answer:

The melting point of a solid is the same as the freezing point of the liquid. At that temperature, the solid and liquid states of the substance are in equilibrium.

Pure gold: 1063

Pure silver: 961

Answer:

Hiii

Explanation:

Your answer is Atmosphere

The atmosphere protects life on Earth by absorbing ultraviolet solar radiation and warming the surface through heat retention (the greenhouse effect). The atmosphere is further classified into multiple layers by temperature, which include the thermosphere, the mesosphere, the stratosphere, and the troposphere.

Hope it helps:)

Answer:

1st one is the answer water cannot be purified by nature pls add me in brainliest

Answer:

Energy

Explanation:

C6H12O6 is glucose and the primary function of glucose is to provide energy.