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Answer:

C: Carbon monoxide - Acidic nature

Explanation:

A) Beryllium is not soluble in water but yet it reacts with an acid and a base. Therefore, since it exhibits both basic and acidic nature, we say it is Amphoteric in nature. Thus it is correct

B)potassium super oxide has the formula KO2. It reacts with acid to form salt called potassium chloride. Thus, it is basic in nature.

C) Carbon monoxide does not react with acids or bases. Thus, it doesn't show either an acidic or basic property and we say it is a neutral oxide. This option is incorrect

D) Bismuth oxide is a basic oxide because it displays properties of a base. This options is correct

Answer:

255mL

Explanation:

(250.0 + 5.00)mL = 255.00mL

255mL

Answer:

0.015382279644614 mole.

Answer:

yes this is the answer for that quaz

Answer:

A) actual yield

Explanation:

 Actual yield is the amount of product that is actually produced in a chemical reaction.

Theoretical yield is the amount of product expected based on stoichiometry.

Per cent yield is the actual yield over the theoretical yield.

Explanation:

I. husking

ii. use magnet

III. husking

iv. floatation

v. Fractional distillation

Answer:

During separation of substances with different boiling points, fractional distillation is used.

During separation of substances in an eutectic mixture or azeotropic mixture, steam distillation is used.

Answer:

I think it will be the answer

2.5 x 10-2 mol

I hope it help you

Answer: Outward

Explanation: :The direction of electric field is radially outward for a positive charge and radially inward for a negative charge. Thus, for the electric field points toward south at a position directly south of a positive charge.

Explanation:

from the equation 1 mole of O2 will give 2 moles of H2O then 6.0 moles of O2 will give x

6.0*2 moles/ 1 mole

= 12 moles

this implies that, 6.0 moles of O2 will give = 12 moles of water

Answer:

Empirical formula: CO₂

Explanation:

The empirical formula is defined as the simplest ratio of atoms present in a molecule. We must convert the mass of carbon and oxygen to moles as follows:

Carbon -Molar mass: 12.01g/mol-

3.0g * (1mol / 12.01g) = 0.250 moles C

Oxygen -Molar mass: 16g/mol-

8.0g * (1mol / 16g) = 0.50 moles O

The ratio of O:C is:

0.50mol / 0.250mol = 2

That means the empirical formula is:

Answer:

False because pH value below 7 are considered acidic.

Answer:

Any solution that has a pH of less than 7 is considered acidic, and anything above a pH of 7 is basic .

Explanation:

Answer:

Zinc

Zinc blende

(ZnS)

-----------------

Lead

Galena

(PbS)

-----------------

Mercury

Cinnabar

(HgS)

----------------

Copper

Copper glance

(Cu2S)

-------------------

Explanation:

Had to learn this for a test

Also, I plead the 5th

Answer:

because it will control the birth of a child which can happen alot being overpopulated in the country or world. It also can mange their life and create a small and happy and healthy family.Also the child can get more love and support from their parents if they have less children and it wont be a taruma for the couple as well.  because growing a child can be expensive time costly and really hard.  

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Explanation:

and btw i think the subject should be biology not chemestry

Answer: Van't Hoff factor, i is less than expected from the formula of the compound and this decreases the effective concentration of particles.

Explanation:

Strong electrolytes are defined as the solutions which completely dissociate into their ions.

But, most of the strong electrolytes do not dissociate completely (act ideally) but remain partially undissociated into the ions. Thus, giving a lesser number of ions in the solution than expected.

This means that the Van't Hoff factor, i which denotes the number of ions is less than expected.

As fewer ions are released in the solution, the concentration of the solution is expected to decrease.

Hence, van't Hoff factor, i is less than expected from the formula of the compound and this decreases the effective concentration of particles.

Answer:

Explanation:

The kinetic energy of an object can be found by using the formula

[tex]k = \frac{1}{2} m {v}^{2} \\ [/tex]

m is the mass

v is the velocity

From the question we have

[tex]k = \frac{1}{2} \times 1500 \times {40}^{2} \\ = 750 \times 400 \\ = 300000 \\ \\ \\ \\ = 3.0 \times {10}^{6} \: \: joules[/tex]

Hope this helps you

Answer:

For sugar: Studies have shown that (when someone stops eating sugar) there are similar effects as when people get off drugs," she said. "You may experience exhaustion, headaches, brain fog and irritability. Some people even have gastrointestinal distress.

For water: Any deficit in normal body water through dehydration, sickness, exercise or heat stress can make us feel rotten. First we feel thirsty and fatigued, and may develop a mild headache. This eventually gives way to grumpiness, and mental and physical decline

I'm not sure if this is the answer you're looking for ✌

Explanation:

Answer:

0.111

Explanation:

Step 1: Calculate the moles corresponding to 23.2 g of ethanol

The molar mass of C₂H₅OH is 46 g/mol.

23.2 g × 1 mol/46 g = 0.504 mol

Step 2: Calculate the moles corresponding to 73.1 g of water

The molar mass of H₂O is 18 g/mol.

73.1 g × 1 mol/18 g = 4.06 mol

Step 3: Calculate the total number of moles

n = nC₂H₅OH + nH₂O = 0.504 mol + 4.06 mol = 4.56 mol

Step 4: Calculate the mole fraction of ethanol

We will use the following expression.

Χ(C₂H₅OH) = nC₂H₅OH / n

Χ(C₂H₅OH) = 0.504 mol / 4.56 mol = 0.111

Answer:

In a chemical change, the atoms in the reactants rearrange themselves and bond together differently to form one or more new products with different characteristics than the reactants. When a new substance is formed, the change is called a chemical change.

Explanation:

Answer:

the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.

Explanation:

Hope it helps

[tex]\bf{\underline{\underline{PHOTOSYNTHESIS }} }[/tex]

Answer:

Atoms and molecules can be deflected by magnetic fields - provided the atom or molecule is first turned into an ion. Electrically charged particles are affected by a magnetic field although electrically neutral ones aren't. The atom or molecule is ionised by knocking one or more electrons off to give a positive ion.

Explanation:

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The atom must first be ionized.

The mass spectrometer is an important analytical tool in chemistry. It is used to identify atoms and molecules.

However, the atom or molecule to be analysed must first be converted into an ion.

This happens when the instrument imparts an electrical charge to the molecule or atom  then the electrically charged ions are read as electrical current.  The ion is accelerated towards a detector which analyses the deflected ions.

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Answer:

300 0.24

600 0.46

900 0.70

1200 0.95

1500 1.20

Explanation: correct on behavior gasses tutorial

Answer:

solid is the substance which is hard

liquid is the substance which we get in liquid form for example water milk etc

gases are those substance which we cannot touch and see

Answer:

c. 0.035 M

Explanation:

I'm correct if I'm rwong

Answer:

See explanation

Explanation:

Period 3 elements include; Na, Mg, Al, Si, P,S,Cl and Ar

Across the period, the chlorides of the elements change from solid to gas. The chlorides of metals are solid while the chlorides of non metals are gaseous.

Also, the chlorides become more volatile across the period. The formulas of the chlorides change from MCl to MCl2 to MCl3 to MCl4, MCl5 and MCl6 respectively across the period where M is a period 3 element.

The pH of the solutions of chlorides of period 3 elements change from neutral to acidic across the period. The pH of the chlorides of metals are neutral while the chlorides of the nonmetals usually yield acid solutions.

N2 should be the gas to effuse more slowly

Explanation:

Lithium

Sodium

group one elements are highly reactive