One glass of water is 85 degrees F and another is 40 degrees F. When an Alka Seltzer tablet is dropped into each glass, at the same time, which of the following describes the expected results? The 85 degree F glass will have an accelerated chemical reaction, because the water was warmer.

The 85 degree F glass will have an accelerated chemical reaction, because the water is cooler.

The 40 degree F glass will have an accelerated chemical reaction, because the water is cooler.

The 40 degree F glass will have an accelerated chemical reaction, because the water was warmer.

Answer:

2Na2O2 + 2H2O → 4NaOH + O2 is the balanced ver of Na2O2 + H2O - NaOH + O2

Explanation:

Answer: Carbon dioxide is added to the atmosphere naturally when organisms respire or decompose (decay), carbonate rocks are weathered, forest fires occur, and volcanoes erupt. Carbon dioxide is also added to the atmosphere through human activities, such as the burning of fossil fuels and forests and the production of cement.

Explanation: Hope this helps :)

Answer: Hey! You need 48 Strawberries to make 12 smoothies.

Explanation: I knew this before but needed to make sure if it's true. So I tested it by myself and got it!

You are very welcome!

You need 84 strawberries to make 12 smoothies.

Multiplication is a mathematical arithmetic operation. It is also a process of adding the same types of expression for some number of times.

Example - 2 × 3 means 2 is added three times, or 3 is added 2 times.

Given:

Martha needs 28 strawberries to make 4 smoothies.

To make one smoothie,

Martha needs = 28/4 = 7 strawberries.

To make 12 smoothies,

Martha needs = 12 x 7

= 84 strawberries.

Therefore, you need 84 strawberries.

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The complete question:

Martha needs 28 strawberries to make 4 smoothies.

How many strawberries would Martha need to make 12 smoothies?

Answer:

single displacement reaction

Explanation:

it is because an atom(Pb) dispalces another atom(H) in H3PI4

The given chemical reaction is single displacement reaction.

When one element in a molecule gets replaced by another, is therefore called a single displacement reaction.

The given reaction is Pb + 2 H3PO4 → 3 H2 + Pb3(PO4)2

It can be seen that when lead is treated with H3PO4 then it will give Pb3(PO4)2 and hydrogen reaction. It is a kind of single displacement reaction.

Therefore, the given reaction is single displacement reaction.

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Answer:

O my OMG

Explanation:

Remember Nicki vs. Cardi

Answer:

D.R2NH

Explanation:

The general formula of a secondary amine is given as:

                    R2NH

Amines are organic compounds that show an appreciable basicity. They are regarded as the derivatives of ammonia where one or two of the three hydrogen atoms has/have been replaced by the alkyl or aryl groups.

 In a secondary amine, two hydrogen atoms of ammonia have been replaced by alkyl and or aryl groups.

Answer:

d. R2NH

Explanation:

edge 2021

Tennessine (Ts)

Element #117

Discovered: April 5, 2010

Answer:

Answer:

It contains chemical potential energy.

Explanation:

Answer:

82.35%.

Explanation:

Mass of 1 molecule of ammonia

NH₃ = 14+3(1)

= 17

Calculating percentage by mass of N.

[tex]\%=\dfrac{\text{Mass of Nitrogen atom}}{\text{Mass of ammonia molecule}}\times 100[/tex]

[tex]\%=\dfrac{14}{17}\times 100\\\\=82.35\%[/tex]

So, the required percentage is 82.35%.

Answer:

Its 1500 meters, which is equal to 0.9320568 miles. Hope this helps!

Explanation:

Answer:

Explanation:

Na     +     Cl    =      NaCl

23 g        35.5 g  

23 g sodium reacts with 35.5 g of chlorine

29 g of sodium reacts with 35.5 x 29 / 23 g of chlorine

= 44.76 g

So 44.76 g of chlorine reacts and 49 - 44.76 = 4.24 g of chlorine is left over .

All the sodium is used up in the reaction .

Answer: the water molecules become more organized and heat is released into the atmosphere as a result.

Explanation:

Answer:i think it is c, it explodes in water because that’s a chemical reaction

Explanation:

Answer:

1.)Elements

2.)Compound

3.)Subscript

4.)Formulas

Explanation:

Answer:

this is my other account btw and i just wanna thank you so much i don't want to fell this semester and now ima mark you brainliest thank you so so so much

Explanation:

Answer:

the answer is is C 465 grams

Answer:

The molar mass and molecular weight of Sn(CO3)2 is 238.728.

Explanation:

Molar mass of any molecule can be calculated by adding mass of all individual atoms  that comprises the compound. The Molar mass of [tex]Sn(CO_{3})_{2}[/tex] is 238.72g/mol.

Molar mass is defined as mass of one mole of a molecule or compound. It's SI unit is g/mole. The other term that is used for molar mass is molecular weight, formula unit mass. Molar mass is extensive property as it depends on the mass of individual atoms that constitutes the molecule.

Mass of tin= 118.71 g.mol

Mass of Carbon=12g/mol

mass of Oxygen= 16g/mole

Molar mass of [tex]Sn(CO_{3})_{2}[/tex] = 1×mass of tin+2×mass of carbon+6×mass of oxygen

substituting all the values we get

Molar mass of [tex]Sn(CO_{3})_{2}[/tex] = 1×118.71+2×12g/mol+6× 16g/mole

Molar mass of [tex]Sn(CO_{3})_{2}[/tex] =118.71 +24+66

Molar mass of [tex]Sn(CO_{3})_{2}[/tex]=238.72g/mol

Therefore the Molar mass of [tex]Sn(CO_{3})_{2}[/tex] is 238.72g/mol

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Answer: two unpaired

Explanation: In general, electrons are removed from the valence-shell s-orbitals before they are removed from valence d-orbitals when transition metals are ionized. And thus, V3+ is paramagnetic, because it has two unpaired 3d-electrons.

Answer:

True

Explanation:

A physical property is a property that can be measured without changing the chemical composition of the substance.

The chemical composition of iron does not change when it conducts electricity so conductivity is a physical property.

Hope that helps.

Atoms of different element can not have same atomic number because only same type of atoms combine to form element. Atoms belonging to different element can have different atomic number. Therefore, the given statement is true.

Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same. Two or more than two atoms with different physical or chemical properties can not combine together to form an element.

A physical property is a property that can be measured without changing the chemical composition of the substance. So,  ability of iron to conduct electricity is a physical property of iron

Therefore, the given statement is true.

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Answer:

Its Vog

Explanation:

Answer:

Helium

Explanation:

Helium has the smallest atomic radius. This is due to trends in the periodic table, and the effective nuclear charge that holds the valence electrons close to the nucleus.

Answer:

The correct answer is D)high specific heat

Explanation:

The specific heat indicates the amount of heat required to raise the temperature of a substance in 1 unit of temperature. The specific heat of water is around 4.18 J/g.°C. That means that 1 gram of water is able to retain a high amount of heat (4.18 J) when the temperature is raised to 1°C. Compared with other substances, this specific heat capacity is higher. Thus, water is a good choice for use in a heat exchanger.