How much total heat is required to bring 25.0g of ice at ~2.00 C to a liquid at 50.0 C? Please

Answer:

it may be +1 or -1 hope this help

An atom is a kind of stuff that cannot be further decomposed chemically. Therefore, the charge on a single proton is +1.

The building block of an element is an atom. An atom is a kind of stuff that cannot be further decomposed chemically. The three main components of an atom are protons, neutrons, plus electrons.

Some substances are either bigger or smaller than atoms. Instances of chemical species that aren't commonly regarded as atoms include protons, neutrons, and electrons, which are atom-related particles. Atoms make up molecules and compounds, however they are not actual atoms. Salt is an example of a molecule and a compound (NaCl). The charge on a single proton is +1.

Therefore, the charge on a single proton is +1.

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The answer is B) Group 8 .

Answer:

That leaves us with: 1s2 2s2 2p6 And that is the electron configuration for F- , the Fluoride ion.

Explanation:

plz give brainliest

Answer:

A boiling chip, boiling stone, porous bit or anti-bumping granule is a tiny, unevenly shaped piece of substance added to liquids to make them boil more calmly.

These help in making the liquid boil more easily

Answer:

umm i think it's called boiling chip

Answer:

18,75 litres

Explanation:

4 NH3 + 3 O2 ---> 2 N2 + 6 H2O

n (NH3) : n (O2) = 4 : 3

<=>

V (NH3) : V (O2) = 4 : 3

Hence, V(O2) = 3 × V (NH3) ÷ 4 litres

V(O2) = 3 × 25.0 ÷ 4 litres

V(O2) = 75 ÷ 4 litres

V(O2) = 18,75 litres

If you have any questions, feel free to ask :)

Answer:

particulates and gases

Explanation:

Answer:

20.0 sec

you can use ln (2)=k* t1/2 then ln N2/N1=-k(t2-t1)

or just divide 100 by 2 then 50 by 2 then 25 by 2 then 12.5 by 2 and that is 4 half lifes at 5 secs each

Explanation:

Answer:   Acid/base and precipitation reactions almost always are NOT redox reactions. For redox to have happened, the number of electrons that an element has must change (i.e. its oxidation state must change). ... But the hydrogen ion never "has" any electron throughout the process and remains in a +1 oxidation state.

Explanation:

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Acid-base reaction is not a redox reaction, since the oxidation number remains unchanged in acid-base reaction.  

An acid-base reaction is the chemical reaction that occur when acids and bases react together.

Redox reaction is a reaction that involves the transfer of electrons between the atoms, ions, or molecules.

Acid-base reactions involve the transfer of hydrogen ions between reactants. Redox reactions involve a change in oxidation number for one or more reactant elements.

Redox reactions involve a change in oxidation number for one or more reactant elements.

Acid-base reactions involve a transfer of a hydrogen ion instead of an electron and the transfer of an H+ ion leaves the oxidation numbers unaffected.

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Answer:

BaO

Al₂O₃

Mg₃P₂

Na₂O

CaCl₂

Answer:

if it cannot be made to fit the new findings

Answer:

As additional scientific evidence is gathered, a scientific theory may be modified and ultimately rejected if it cannot be made to fit the new findings; in such circumstances, a more accurate theory is then required.

Explanation:

please follow me

option D Balanced force

Answer:

S+ F2 ⇒ SF

S=1

F =2

So S +F2 ......... 2SF

2S + F2 ..........2SF this is a balance equation

S=2 F=2 in left side s=2 F = 2 in rightside

Explanation:⇆

⇒

Answer:

SO₄²-, -2, CuSO4

Explanation:

Dang that was long.

Answer:

D

Explanation:

Answer:

238 is the answer

Explanation:

238 - 146 + 3 = 95

Americium (95Am) is an element that has 95 protons and 146 neutrons in its nucleus of an atom.

Americium is an element that has 95 protons and 146 neutrons. Its symbol is Am. Its atomic mass is 241 amu which is get by addition of proton and neutron.

So we can conclude that Americium (95Am) is an element that has 95 protons and 146 neutrons in its nucleus of an atom.

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Answer:D

Explanation:

Answer: 3.00

Explanation: got the answer from my teachers notes

According to stoichiometry, if a sample of 4.50 moles of hydrogen gas was reacted with excess nitrogen, 3 moles of ammonia gas would be produced.

Stoichiometry is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.

Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.It is useful in balancing chemical reactions.In the given reaction 3 moles hydrogen gives 2 moles ammonia, thus, 4.5 moles of hydrogen will give, 4.5×2/3=3 moles.

Thus,  if a sample of 4.50 moles of hydrogen gas was reacted with excess nitrogen, 3 moles of ammonia gas would be produced.

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Answer:

electrons

The nucleus contains two types of subatomic particles, protons and neutrons. The protons have a positive electrical charge and the neutrons have no electrical charge. A third type of subatomic particle, electrons, move around the nucleus. The electrons have a negative electrical charge

Explanation:

HOPE ITS HELPFUL FOR U IF YES PLZ MARK ME AS BRILLIANT

Answer:

23

Explanation:

Answer:

0.118m

Explanation:

Answer:

I'm not totally sure but I think that it is C-carbon

Explanation:

because its in the area of +1+2+3 4 -3 -2 -1

sorry the pic is blocked

Answer:

REACTION 2

Explanation:

BEACUSE IT SYA IN THE QUESTION

Answer:

Reaction 1: Mg(s) + 2HCl(aq)  -> MgCl2(aq) + H2(g)

Reaction 2: MgO(s) + 2HCl(aq) -> MgCl2(aq) + H2O(l)

Reaction 3: H2(g) + ½ O2(g) -> H2O(l)

Explanation:

Answer:

D.CaCl2

Explanation:

Answer:

Answer:

Copper sulphate is an acidic salt: It is the product of the reaction between a weak copper base and a strong acid , H2SO4

Litmus has a red colour in acidic solutions:

Conclusion: Acidic copper sulphate solution turns blue litmus to red

Baking soda is a basic salt : It is the reaction product of a weak acid , CO2 and a strong base , NaOH

Litmus has a blue colour in basic solutions:

Conclusion: basic baking soda solution turns red litmus to blue

Solubility means the ability of a solute to dissolve in solvent to form a solution.

Solubility is defined as the maximum amount of a substance that will dissolve in a given amount of solvent at a particular temperature.

The solute can be a solid, liquid or a gas.

The solubility of a solid or a liquid solute in a solvent is affected by the temperature, while the solubility of a gaseous solute is affected by both the temperature and the pressure of the gas.

Therefore, Solubility means the ability of a solute to dissolve in solvent to form a solution.

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Answer:

1.73 Molar

Explanation:

The formula is Molarity=moles of solute/liters of solution, which can be written in whatever way you prefer, and examples include: M=N/V or M=mol/L.

M=N/V

M= [tex]\frac{5.63}{3.25}[/tex]

Divide 5.63 by 3.25. When you calculate this, you get 1.73, therefore your answer is 1.73 molar.

A 130 kg object weighs approximately, 1274 Newtons on Earth.

The weight of an object on Earth can be calculated using the formula:
Weight = mass × acceleration due to gravity
Weight is calculated by multiplying the mass of an object by the acceleration due to gravity. On Earth, the acceleration due to gravity is approximately 9.8 meters per second squared (9.8 m/s²).

In this case, we have a 130 kg object. To find its weight on Earth, we can use the formula:

Weight = mass × acceleration due to gravity

Weight = 130 kg × 9.8 m/s²

Weight = 1274 Newtons (N)

So, the weight of a 130 kg object on Earth is approximately 1274 Newtons.

Therefore, a 130 kg object weighs approximately, 1274 Newtons on Earth.

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Answer:

español

Un elemento del grupo 3 es un elemento situado dentro de la tabla periódica en el grupo 3. Los átomos de estos elementos tienen gran tendencia a oxidarse y son muy reactivos, predominando el estado de oxidación +3. Presentan propiedades muy similares al aluminio. Dan lugar a iones incoloros.

ingles

An element of group 3 is an element located within the periodic table in group 3. The atoms of these elements have a great tendency to oxidize and are very reactive, with the +3 oxidation state predominant. They have properties very similar to aluminum. They give rise to colorless ions.

Explanation:

ingles

Group -> 3

Group -> 3Period

Group -> 3Period4 21

Group -> 3Period4 21Sc

Group -> 3Period4 21Sc5 39

Group -> 3Period4 21Sc5 39Y

Group -> 3Period4 21Sc5 39Y6 57

Group -> 3Period4 21Sc5 39Y6 57The

Group -> 3Period4 21Sc5 39Y6 57The7 89

Group -> 3Period4 21Sc5 39Y6 57The7 89Ac

español

Grupo -> 3

Grupo -> 3Periodo

Grupo -> 3Periodo4 21

Grupo -> 3Periodo4 21Sc

Grupo -> 3Periodo4 21Sc5 39

Grupo -> 3Periodo4 21Sc5 39Y

Grupo -> 3Periodo4 21Sc5 39Y6 57

Grupo -> 3Periodo4 21Sc5 39Y6 57La

Grupo -> 3Periodo4 21Sc5 39Y6 57La7 89

Grupo -> 3Periodo4 21Sc5 39Y6 57La7 89Ac

Answer:

Aquatic plants have aur filled tissues to make them easy to float.....

Explanation:

It provides buoyancy