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HCO3-

Sodium bicarbonate (IUPAC name: sodium hydrogen carbonate), is commonly known as baking soda or bicarbonate of soda, is a chemical compound with the formula NaHCO3. It is a salt composed of a sodium cation (Na+) and a bicarbonate anion (HCO3−). Sodium bicarbonate is a white solid that is crystalline, but often appears as a fine powder.

Answer:

B. The limiting reactant determines the maximum amount of product that can be formed.

Answer:

convergent boundary

Explanation:

Mark brainlest if right

Units of the SI System

There are seven base units in the SI system:

the kilogram (kg), for mass

the second (s), for time

the kelvin (K), for temperature

the ampere (A), for electric current

the mole (mol), for the amount of a substance

the candela (cd), for luminous intensity

the meter (m), for distance

Answer: I believe it's C

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Answer:

The difference between saturated and unsaturated fat lies in the number of double bonds in the fatty acid chain. ... Saturated fats tend to be solid at room temperature and from animal sources, while unsaturated fats are usually liquid and from plant sources

Explanation:

Answer:

B

Explanation:

The statement "Some of the mass is converted into energy during this process" describes the total mass of the nucleus formed in the

fusion reaction.

So B is correct option.

The nuclear reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particle by releasing or absorbing energy.

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Answer:

The pistil and the stamen.

Explanation:

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The pistil and the stamen are the specialized  structures increase the probability of successful plant reproduction

Reproduction in Flowering Plants occur both asexually and sexually, flowering plants or angiosperms, use the sexual mode of reproduction.

Reproduction in Flowering Plants occurs in the flower as  both male and the female gametes are present in it, various parts of flower involve in the process of reproduction.

There are four important steps in the reproduction of flowering plants. such as Pollination, Gametogenesis, Fertilization

The flower is a specialized structure where reproductive part of the plant, containing the male and female reproductive organs which facilitate fertilization.

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Answer: lysosome

Explanation:

Answer:

the pasta will soften

Explanation:

the pasta will boil and will soften up as a result of it being regular pasta

Answer:

[tex]m_{AgNO_3}=577.6mg[/tex]

Explanation:

Hello there!

In this case, according to the given chemical reaction, it is first necessary to compute the moles of reacting LiOH given its molar mass:

[tex]n_{LiOH}=81.5mg*\frac{1g}{1000mg}*\frac{1mol}{23.95g} =0.0034molLiOH[/tex]

Thus, since there is a 1:1 mole ratio between lithium hydroxide and silver nitrate (169.87 g/mol) the resulting milligrams turn out to be:

[tex]m_{ AgNO_3}=0.0034molLiOH*\frac{1molAgNO_3}{1molLiOH} *\frac{169.87gAgNO_3}{1molAgNO_3} *\frac{1000gAgNO_3}{1gAgNO_3} \\\\m_{AgNO_3}=577.6mg[/tex]

Best regards!

Answer:

AgNO3+Li-->LiNO3+Ag

It is already balanced.

And turns out to be M AgNO3=577.6mg

Hope this helps!

Answer: A) H-H is least polar

Explanation:

Electronegativity is defined as the property of an element to attract a shared pair of electron towards itself. The more is the difference in electronegativity, the more polat the bond is.

1. H-H : Electronegativity difference = electronegativity of hydrogen - electronegativity of hydrogen =2.1 -2.1= 0

2.   H-Cl : Electronegativity difference = electronegativity of chlorine - electronegativity of hydrogen = 3-2.1 = 0.9

3. H-F : Electronegativity difference  = electronegativity of fluorine - electronegativity of hydrogen= 4-2.1= 1.9  

4.   H-I : Electronegativity difference = electronegativity of iodine - electronegativity of hydrogen= 2.5 -2.1= 0.4

Thus the least electronegativity difference between the bonded atoms is in H-H , this is least polar.

Answer:

The impact of dinosaurs caused Dwayne Johnson to beat paper in rock paper scissors as the weak strength of the plants on the moon are diabolical in the atmosphere.

Explanation:

Thats why me and Selena Gomez share the same light bulb.

Answer:

Electrostatic smoke precipitators work by forcing dirty flue gas (the gas escaping from a smokestack) past two electrodes (electrical terminals), which take the form of metal wires, bars, or plates inside a pipe or smokestack

Explanation:

Answer:

hello

Bromate is a bromine oxoanion and a monovalent inorganic anion. It is a conjugate base of a bromic acid.

Explanation:

thanks

Answer:

[tex]\boxed {\boxed {\sf 0.055 \ mol \ CO_2}}[/tex]

Explanation:

To convert form grams to moles, the molar mass must be used. This is the mass (in grams) in 1 mole of a substance.

We can use the values on the Periodic Table. First, find the molar masses of the individual elements: carbon and oxygen.

Check for subscripts. The subscript of 2 after O means there are 2 oxygen atoms, so we have to multiply oxygen's molar mass by 2 before adding.

Use the molar mass as a ratio.

[tex]\frac {44.009 \ g\ CO_2}{ 1 \ mol \ CO_2}[/tex]

Multiply by the given number of grams.

[tex]2.4 \ g \ CO_2 *\frac {44.009 \ g\ CO_2}{ 1 \ mol \ CO_2}[/tex]

Flip the fraction so the grams of carbon dioxide cancel.

[tex]2.4 \ g \ CO_2 *\frac { 1 \ mol \ CO_2}{44.009 \ g\ CO_2}[/tex]

[tex]2.4 *\frac { 1 \ mol \ CO_2}{44.009}[/tex]

[tex]\frac { 2.4 \ mol \ CO_2}{44.009}= 0.0545342998 \ mol \ CO_2[/tex]

The original measurement of grams has 2 significant figures, so our answer must have the same. For the number we calculated, that is the thousandth place.

The ten thousandth place has a 5, so we round the 4 to a 5.

[tex]0.055 \ mol \ CO_2[/tex]

2.4 grams of carbon dioxide is about 0.055 moles.

Answer: [tex]BaCl_2[/tex] is the limiting reagent and [tex]Al_2(SO_4)_3[/tex] is the excess reagent.

Explanation:

To calculate the moles :

[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]    

[tex]\text{Moles of aluminium sulphate}=\frac{150g}{342.15g/mol}=0.438moles[/tex]

[tex]\text{Moles of barium chloride}=\frac{200g}{208.23g/mol}=0.960moles[/tex]

The balanced chemical reaction is:

[tex]Al_2(SO_4)_3+3BaCl_2\rightarrow 2AlCl_3+3BaSO_4[/tex]  

According to stoichiometry :

3 moles of [tex]BaCl_2[/tex] require = 1 mole of [tex]Al_2(SO_4)_3[/tex]

Thus 0.960 moles of [tex]BaCl_2[/tex] will require=[tex]\frac{1}{3}\times 0.960=0.320moles[/tex]  of [tex]Al_2(SO_4)_3[/tex]

Thus [tex]BaCl_2[/tex] is the limiting reagent as it limits the formation of product and [tex]Al_2(SO_4)_3[/tex] is the excess reagent as it is left.

A scientist that carelessly pours cultures of living microbes down the drain represents a type of bacterial pollution.

Bacterial pollution refers to the uncontrolled proliferation of bacteria in the surrounding environment and ecosystems.

In conclusion, a scientist that carelessly pours cultures of living microbes down the drain represents a type of bacterial pollution.

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Answer:

3.45E24

Explanation:

calculator I'm not that great at math but I'm good at science but that isn't really science but it's aix between it tho

Answer: 10.  39.7 g [tex]CH_3OH[/tex]

11. 650 g of [tex]HgO[/tex]

Explanation:

To calculate the moles, we use the equation:

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}[/tex]

a) moles of [tex]H_2[/tex]

[tex]\text{Number of moles}=\frac{5.0g}{2.0g/mol}=2.5moles[/tex]

[tex]CO(g)+2H_2(g)\rightarrow CH_3OH(l)[/tex]

According to stoichiometry :

2 moles of [tex]H_2[/tex] produce = 1 mole of [tex]CH_3OH[/tex]

Thus 2.5 moles of  [tex]H_2[/tex] produce=[tex]\frac{1}{2}\times 2.5=1.25moles[/tex]  of [tex]CH_3OH[/tex]

Mass of [tex]CH_3OH=moles\times {\text {Molar mass}}=1.25moles\times 32g/mol=39.7g[/tex]

Thus 39.7 g of [tex]CH_3OH[/tex] will be produced from 5.0 g of hydrogen.

11. [tex]2HgO(s)\rightarrow 2Hg(l)+O_2(g)[/tex]

According to stoichiometry :

1 mole of [tex]O_2[/tex] is produced by = 2 moles of [tex]HgO[/tex]

Thus 1.50 moles of  [tex]O_2[/tex] are produced by =[tex]\frac{2}{1}\times 1.50=3moles[/tex]  of [tex]HgO[/tex]

Mass of [tex]HgO=moles\times {\text {Molar mass}}=3moles\times 216g/mol=650g[/tex]

Thus 650 g of [tex]HgO[/tex] woukd be decomposed to produce 1.5 mol of oxygen

Answer:

A Brønsted-Lowry acid is any species that can donate a proton (H +) to another molecule. A Brønsted-Lowry base is any species that can accept a proton from another molecule. In short, a Brønsted-Lowry acid is a proton donor (PD), while a Brønsted-Lowry base is a proton acceptor (PA).

Answer:

Option B.

Explanation:

First we convert 9.90 g of Pb(NO₃)₂ into moles, using its molar mass:

Then we convert moles of Pb(NO₃)₂ into moles of PbO, using the stoichiometric coefficients:

Now we convert 0.0299 mol PbO into grams, using its molar mass:

So 6.67 g is the theoretical yield. With that in mind we calculate the percent yield:

So the correct answer is option B.

Answer:

f. Sn^4+

c. second

e. Al^3+

d. third

Explanation:

This question comes from a quantitative analysis showing the flowchart of a common scheme for identifying cations.

Now, from the separation scheme, Let's assume that Sn⁴⁺ & Al³⁺ were given; Then, Yes, the separation will work.

However, there will be occurrence of precipitation after the 1st step1.

So,  the Sn⁴⁺ cation will precipitate after the second step. Then the Al³⁺ cation will precipitate after the third step.

[tex]\huge\underline\mathbb\pink{ANSWER\::}\\\\[/tex]

_BaS + _PtF2 → _BaF2 + _Pts

Barium Sulfide + Platinum(II) Fluoride = Barium Fluoride + Platinum(II) Sulfide.

=> 1 BaS + 1 PtF2 → 1 BaF2 + 1 PtS

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Answer:

[tex]2Fe +3Cl_{2} -> 2FeCl_{3}[/tex]

Explanation:

In order to have a balanced chemical reaction, you need coefficients of 2, 3 and 2 before each substance in this equation. Chlorine is diatomic so it occurs as a molecular pair when a gas.

Answer:

Br>Ge>Kr

Explanation:

Electron affinity is the energy change that results from adding an electron to a gaseous atom(Khan Academy). It is also defined as "the amount of energy released when an electron is attached to a neutral atom or molecule in the gaseous state to form a negative ion" (Wikipedia).

Electron affinity increases from left to right in the periodic table. However, the noble gases possess a complete outermost electron shell.

Hence, electron affinity can be raked from the most negative to the least negative for the three atoms as follows; Br>Ge>Kr

Answer:

2.04 seconds.

Explanation:

We use an equation of motion of a body acting under gravity:

v = u + gt    where u = initial velocity, g = acceleration due to gravity (9.81 m /s^-2) , v = final velocity and t = the time in seconds.

At the top of the upward journey v = 0 so we have:

0 = 20 - 9.81t     (the  g is negative because the gravity acts downwards).

9.81t = 20

t = 20/9.81

= 2.04 seconds.