♦ O people, evidence has come to you from your Lord, and we have sent down to you a clear light ﴾[An-Nisa: 174].

Answer:

The mass of sodium hydroxide will result in the same mass of sodium chloride.

The total mass of hydrochloric acid and sodium hydroxide will result in a lower total mass of sodium chloride and water

The mass of hydrochloric acid will result in the same mass of sodium chloride.

The total mass of hydrochloric acid and sodium hydroxide will result in the same total mass of sodium chloride and water

Explanation:

Answer:

The mass of sodium hydroxide will result in the same mass of sodium chloride.

The total mass of hydrochloric acid and sodium hydroxide will result in a lower total mass of sodium chloride and water

The mass of hydrochloric acid will result in the same mass of sodium chloride.

The total mass of hydrochloric acid and sodium hydroxide will result in the same total mass of sodium chloride and water

Explanation:

Answer: To determine the elements on other planets. The Mercury Surface, Space Environment, Geochemistry, and Ranging (MESSENGER) Gamma-Ray Spectrometer (GRS) can measure gamma rays emitted by the nuclei of atoms on planet Mercury's surface that are struck by cosmic rays.

Explanation:

Answer:

The heat required to evaporate 512 g of water initially at 0°C is 1,371,340.8 J

Explanation:

The given parameters are;

The mass of water given in the question = 512.0 g

The specific heat capacity of water = 4.184 J/(g·°C)

The heat of vaporization of water = 2,260 J/g

The heat, Q, required to raise the temperature of 512.0 g from 0°C to 100°C is given as follows;

Q = 512 × 100 × 4.184 = 214,220.8 J

The heat required to vaporize 512.0 g of water at 100°C = Mass × Heat of Vaporization

The heat required to vaporize 512.0 g of water at 100°C = 512 × 2260 = 1,157,120 Joules = 1,157.12 kJ

The heat required to evaporate 512 g of water initially at 0°C is therefore;

214,220.8 J + 1,157,120 J = 1,371,340.8 J.

Answer:

Gases have more kinetic energy than liquids

Explanation:

Gases have more kinetic energy than liquids. Liquids have more kinetic energy than solids. When a substance increases in temperature, heat is being added, and its particles are gaining kinetic energy. Because of their close proximity to one another, liquid and solid particles experience intermolecular forces.

hope this helps

Answer: A subscript or superscript is a character that is set slightly below or above the normal line of type, respectively. It is usually smaller than the rest of the text. Subscripts appear at or below the baseline, while superscripts are above.

a coefficient is a constant term related to the properties of a product. In the equation that measures friction, for example, the number that always stays the same is the coefficient.

Parentheses are used in mathematical expressions to denote modifications to normal order of operations (precedence rules). In an expression like , the part of the expression within the parentheses, , is evaluated first, and then this result is used in the rest of the expression.

Chemical symbols are abbreviations used in chemistry for chemical elements, functional groups and chemical compounds. Element symbols for chemical elements normally consist of one or two letters from the Latin alphabet and are written with the first letter capitalized.

That there are no numbers present in the chemical formula means that there is one atom of each element present in the molecule. The Periodic Table reveals that Na is the symbol for sodium, and Cl is the symbol for chlorine.

Explanation:

Is this Good enough?

Answer:

1. A subscript or superscript is a character that is set slightly below or above the normal line of type, respectively. It is usually smaller than the rest of the text. Subscripts appear at or below the baseline, while superscripts are above.

2. In mathematics, a coefficient is a multiplicative factor in some term of a polynomial, a series, or any expression; it is usually a number, but may be any expression. In the latter case, the variables appearing in the coefficients are often called parameters and must be clearly distinguished from the other variables.

3. In rhetoric, a parenthesis or parenthetical phrase is an explanatory or qualifying word, clause, or sentence inserted into a passage. The parenthesis could be left out and still form grammatically correct text. Parentheses are usually marked off by round or square brackets, dashes, or commas.

4. Chemical symbols are abbreviations used in chemistry for chemical elements, functional groups and chemical compounds. Element symbols for chemical elements normally consist of one or two letters from the Latin alphabet and are written with the first letter capitalised

5. The numero sign or numero symbol, №, is a typographic abbreviation of the word number indicating ordinal numeration, especially in names and titles. For example, using the numero sign, the written long-form of the address "Number 22 Acacia Avenue" is shortened to "№ 22 Acacia Avenue", yet both forms are spoken long

Explanation:

BTW i copied and pasted from the internet, i did not have time to write it all down cause im on an edge quiz, sorry.

Answer:

70.26 moles

Explanation:

1 mole of potassium will contain 6.02 x 10²³ atoms of potassium

6.02 x 10²³ atoms of potassium  = 1 mole

4.23 x 10²⁵ atoms of potassium = 4.23 x 10²⁵ / 6.02 x 10²³

= 70.26 moles .

Answer:

The nucleus of an atom is made up of a dense ball

of protons and neutrons surrounded by electrons.

Explanation:

We know that an atom consist of electrons, protons and neutrons. Neutrons and protons are present inside the nucleus while electrons are present out side the nucleus. Electron has a negative charge and is written as e⁻. The mass of electron is 9.10938356×10⁻³¹ Kg . While mass of proton and neutron is 1.672623×10⁻²⁷Kg and 1.674929×10⁻²⁷ Kg respectively.

Symbol of proton= P⁺  

Symbol of neutron= n⁰  

The number of electron or number of protons are called atomic number while mass number of an atom is sum of protons and neutrons. The umber of protons and electrons are always equal to make the atom electrically neutral and when an atom loses its valance electron the number of protons increases and thus positive charge increased and atom form cation.

Answer:

D is the right answer cell wall and chloroplasts

Answer:D

Explanation: Because you know what each cell looks like

Answer:

radio waves

Explanation:

Answer:

about 2 years I think, you might have to ask your dentist

Explanation:

Answer:

it really depens of ur treatment i had braces and it took a year and now i got them again and they say its gonna take a year so it depends on ur treatment

Explanation:

Answer:

d = 0.84 g/cm³

Explanation:

Given data:

Mass of wood = 2.85 g

Volume of water = 20.0 mL

Volume of water + wood = 23.4 mL

Density of wood = ?

Solution:

Volume of wood = (Volume of water + wood ) - Volume of water

Volume of wood = 23.4 mL - 20.0 mL

Volume of wood = 3.4 mL

1 mL = 1 cm³

Density of wood:

d = m/v

d =  2.85 g / 3.4cm³

d = 0.84 g/cm³

Answer:

Relative dating is used to determine a fossils approximate age by comparing it to similar rocks and fossils of known ages. Absolute dating is used to determine a precise age of a fossil by using radiometric dating to measure the decay of isotopes, either within the fossil or more often the rocks associated with it.

Explanation:

Answer:

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Explanation:

Answer:

B

............. M

Explanation:

Emergence

Answer:

The law of conservation of mass indicates the same amount of carbon will be found in the reactants as in the products.

Explanation:

The mass of the reactants and products are equal and are not dependent on the physical state of the substances.

Law of conservation of mass and and law of conservation of energy describes this reaction very well.

Learn more about photosynthesis here

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Answer:

B.) Atomic Properties

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Answer:

1.66 moles of oxygen

Explanation:

Given data:

Mass of CO₂ = 36.55 g

Number of moles of O = ?

Solution:

Number of moles of CO₂ = mass/molar mass

Molar mass of CO₂ is 44 g/mol

Number of moles = 36.55 g/ 44 g/mol

Number of moles = 0.83 mol

1 mole of CO₂ contain 2 moles of oxygen.

0.83 × 2 = 1.66 moles of oxygen

Answer:

Answer:15.9994 g/mol

Explanation:

Answer:

Explanation:

NaCl sodium Chloride as ordinary salt

Naf sodium fluoride is used in toothpaste which we use every day

Answer:

Explanation:

The number of atoms of zinc can be found by using the formula

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

N = 0.48 × 6.02 × 10²³

We have the final answer as

Hope this helps you

Answer:

2.89× 10²³ atom

Explanation:

Given data:

Number of atoms of Zn = ?

Number of moles of Zn = 0.48 mol

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.  The number 6.022 × 10²³ is called Avogadro number.

For example,

1 mole = 6.022 × 10²³ atom

0.48 mol ×  6.022 × 10²³ atom / 1mol

2.89× 10²³ atom

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Answer:

The alkaline earth metals are six chemical elements in group 2 of the periodic table. They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).

Explanation:

hope that helps

Answer:

20790 J

Explanation:

From the question given above, the following data were obtained:

Mass (M) = 165 g.

Initial temperature (T1) 10 °C.

Final temperature (T2) = 40 °C.

Specific heat capacity (C) = 4.2 J/g °C.

Heat (Q) required =?

Next, we shall determine the change in temperature of water. This can be obtained as illustrated below:

Initial temperature (T1) 10 °C.

Final temperature (T2) = 40 °C.

Change in temperature (ΔT) =?

ΔT = T2 – T1

ΔT = 40 – 10

ΔT = 30 °C

Finally, we shall determine the heat energy required to raise the temperature of the water as follow:

Mass (M) = 165 g.

Specific heat capacity (C) = 4.2 J/g °C.

Change in temperature (ΔT) = 30 °C

Heat (Q) required =?

Q = MCΔT

Q = 165 × 4.2 × 30

Q = 20790 J

Thus, the heat energy required to raise the temperature of the water is 20790 J

Answer:

here's the answers

Explanation:

Answer:

1. 2.02

2. 2.15

3. 0.13

Explanation:

doing it now of EDG :)

Answer:

She mainly needs the Peanut Butter because it has a lot of protein and her cells worked together to help her run.

Answer:

mostly PB for proteins

Explanation:

Answer:

1,3,4

Explanation:

Because you have to know what each one is

frequency.

quantity.

thickness.

body.

closeness.

concretion.

heaviness.

solidity.

Answer:

1ohm

Explanation:

The presence of which Fe²⁺ ion usually produces a colored solution. Therefore, option C is correct.

An ion can be described as a chemical specie that exhibited a positive or negative charge. The term ‘ion’ can be referred to atoms or molecules with non-zero charges on them. Therefore, all atoms have more electrons than protons or more protons than electrons.

If the number of protons in atomic structure is greater than electrons are termed to hold a net positive charge and are referred to as cations. The ions that contain a greater number of electrons than protons in atomic structure hold a net negative charge are anions.

The electronic configuration of the iron is [Ar]3d⁶4s². As the iron atom losses 2 electrons in its valence shell, it becomes a cation  Fe²⁺ ion. As it has four unpaired electrons produces a colored solution.

Learn more about an ion, here:

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