Look at the equation. Which is the Brønsted-Lowry base?

short fur

Explanation:

According to Mendel's Law of Dominance, if short fur is the dominant trait, and long fur is recessive; a heterozygous genotype will definitely be phenotypically short fur.

[tex]\huge\mathfrak\colorbox{white}{}[/tex]

Because you'll definitely get it right.

The regression equation supports the hypothesis by showing associations between sets of scientific data (in this case, half life cycle and radioactivity).

The regression equation is a type of mathematical tool employed to determine the association between variables.

The regression equation can help to understand the relationships between independent and dependent variables.

In conclusion, the regression equation supports the hypothesis by showing associations between sets of scientific data.

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Answer:

Quite Strongly

Explanation:

Got it right 2022 edge

Molarity, M = (n x 1000) / vol (in ml)

M = 17.2 x 1000/ 2000

M = 8.6 mol/L

Answer: hydrogen bonding

Explanation:

When hydrogen atoms bond with oxygen atoms, there is hydrogen bonding.

Answer:

Hydrogen bonding

Explanation:

Answer:

2%

Explanation:

.2 g  / 10 g    * 100% = 2%

Answer:

[tex]c = 0.441mol{dm}^{ - 1} [/tex]

Explanation:

[tex]m = 25.22g \\ v = 2.2l = 2.2 {cm}^{3} \\ mm(lif ) = 7 + 19 \\ = 26g {mol}^{ - 1} \\ number \: of \: moles(n) = \frac{m}{mm} \\ = \frac{25.22g}{26g {mol}^{ - 1} } \\ = 0.97mol \\ concetration(c) = \frac{n}{v} \\ = \frac{0.97mol}{2.2 {cm}^{3} } \\ c = 0.441mol {dm}^{ - 3} [/tex]

Answer:

1. C. [tex]10.5 *10^{23[/tex] molecules

2. C. [tex]9.04*10^{21}[/tex] molecules

3. D. [tex]89.64*10^{-24[/tex] g

Explanation:

1. To find the molecules of manganese from moles use this equation:

[tex]moles (x)*\frac{6.022 *10^{23} molecules }{1 mole}[/tex]

Insert the amount of moles given (1.75) into the equation and solve:

[tex]1.75moles*\frac{6.022 *10^{23} molecules }{1 mole}[/tex] = [tex]1.05 *10^{24[/tex] molecules.

In the question they have the answer as [tex]10.5 *10^{23[/tex] which is the same as [tex]1.05 *10^{24[/tex]. So, [tex]10.5 *10^{23[/tex] is the answer.

2. To find molecules from grams per mole, use this equation:

[tex]x grams *\frac{1 mol}{mass(g)} *\frac{6.022*10^{23} molecules}{1 mol}[/tex]

The molar mass of AlCl3 is 133.34 g/mol, and we want to know how many molecules in 2 grams. Plug these into the equation.

[tex]2 g *\frac{1 mol}{133.34g} *\frac{6.022*10^{23} molecules}{1 mol}[/tex] = [tex]9.04*10^{21}[/tex] molecules

The answer will be C. [tex]9.04*10^{21}[/tex] molecules.

3. To find the mass of the hydrogen atoms, use this equation:

[tex]x u*\frac{1.66*10^{-24}g}{1u}[/tex]

We are given 54 u. Plug this into the equation and solve:

[tex]54 u*\frac{1.66*10^{-24}g}{1u} = 8.964*10^{-23[/tex] grams

Once again, the question gives us this answer in a different form of [tex]89.64*10^{-24[/tex] g, but they are the same. So, the final answer is D. [tex]89.64*10^{-24[/tex] g.

I hope this helps! If you have any questions about my work feel free to leave them in the comments!

The concentration of KBr in the resultion solution is 0.34 M

From the question, we are to determine the concentration of KBr in the resulting solution

First, we will determine the number of mole of KBr present

Using the formula,

[tex]Number\ of\ moles = \frac{Mass}{molar\ mass}[/tex]

Mass of KBr = 20.1 g

Molar mass of KBr = 119.00 g/mol

∴ Number of moles of KBr present = [tex]\frac{20.1}{119.00}[/tex]
Number of moles of KBr present = 0.1689 mole

Now, for the concentration of the KBr

Using the formula,

[tex]Concentration = \frac{Number\ of\ moles}{Volume}[/tex]

Volume of solution = 500.0 mL = 0.50 L

∴ Concentration of KBr = [tex]\frac{0.1689}{0.50}[/tex]

Concentration of KBr = 0.3378 M

Concentration of KBr ≅ 0.34 M

Hence, the concentration of KBr in the resultion solution is 0.34 M

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Answer: Chlorine & Bromine

Explanation:

Based on the mole ratio of the reaction, the alkalinity of the exhibit is 0.02 mg/L of CaCO3.

Alkalinity is a measure of the hydroxide ion concentration of a solution.

From the equation of the reaction, the mole ratio is 1 :1.

1 mole of the sample reacts with 1 mole of acid.

Moles of titrant = 1.58 mL × 0.019 M = 0.003 mmoles

Moles of samples = 0.003 mmoles

The concentration of sample = 0.003 mmol/15 mL = 0.0002 M

mass concentration = 0.0002 M × 100.0869 g/mol

mass concentration = 0.02 g/mL

Converting to mg/L:

0.02 g/mL × 1000 mg/1000 L = 0.02 mg/L

Therefore, the alkalinity of the exhibit is 0.02 mg/L of CaCO3.

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Answer:

B

Explanation:

Phosphofructokinase-1

Answer:

c could someone try to do the page for me please i will really appreciate it I'll mark brainliest i need it by the end of my geometry class

Answer: The correct answer is (a)combination.

Explanation: Direct combination and synthesis are the same process in which two reactants form to make a product

Answer:

410

Explanation:

:)))))))))))))))))))))))))))))))

Explanation:

gold is found very low down in the reactivity series thus is relatively unreactive. Metals found above gold in the series are more reactive compared to gold and thus is able to undergo a single displacement reaction, replacing gold in solution, which is then precipitated as a solid.

Answer:

Not sure.

Explanation:

Give me some time.

Answer: Arsenic

Explanation:

Arsenic is in column 15 of the periodic table, which means that it has 5 valence electrons.

Answer:

0.9375

Explanation:

3.0x30x15 = 17 496 000 kg [tex]sx^{2}[/tex]

subtract or divde

then you take the 9 and 375 add 0.9000 and combine them and there you go.

                                                          [tex]+\frac{0.9000}{375} =0.9375[/tex]

The required pH of the solution is 4.2 which means solution is acidic in nature.

pH of the solution is define as the negative logarithm of the concentration of the hydronium ion, and it is represented as:

pH = -log[H⁺]

Given concentration of H₃O⁺ ion = 6.25×10⁻⁵ M

On putting this value on above equation, we get

pH = -log(6.25×10⁻⁵) = 4.2

Hence required pH of the solution is 4.2.

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Answer:

If 3.4 moles of carbon dioxide (CO2) form at the end of the reaction, 1.7 moles of oxygen gas

(02) and 3.4 moles of carbon monoxide (CO) entered the reaction

Explanation:

The rule of three or is a way of solving problems of proportionality between three known

values and an unknown value, establishing a relationship of proportionality between all of

them. That is, what is intended with it is to find the fourth term of a proportion knowing the

other three. Remember that proportionality is a constant relationship or ratio between different

magnitudes.

If the relationship between the magnitudes is direct, that is, when one magnitude increases, so

does the other (or when one magnitude decreases, so does the other), the direct rule of three

must be applied. To solve a direct rule of three, the following formula must be followed:

ab

cx

So

C*b

T =

a

In this case, it is possible to use the reaction stoichiometry of the reaction (that is, the

relationship between the amount of reagents and products in a chemical reaction) and the rule

of three to calculate the quantities of moles requested:

.

,

If by stoichiometry 2 moles of CO2 are formed by 1 mol of O2, if 3.4 moles of CO2 are

formed, how many moles of O2 are needed?

molesofo2 = 3.42

=

moles of O2=1.7 moles

• If by stoichiometry 2 moles of CO2 are formed by 2 moles of CO, if 3.4 moles of CO2 are

formed, how many moles of CO are needed?

molesof CO =

=

3.4*2

2

moles of CO=3.4

Answer:

About 300 million years ago, 

Explanation:

Col. Edwin Drake

Answer:

Oil was formed from the animals and plants that lived millions of years ago and the creator is John D Rockefeller and others in 1870

Answer:  How much heat is required to convert 29 g of ice at -4.0 ˚C to water vapor at 105 ˚C (report your answer to three significant figures)? Answer all five parts, showing your detailed calculations: i) Heat to warm ice from -4.0 to 0 oC: ii) Heat to convert ice to liquid: iii) Heat to warm liquid to boiling: iv) Heat to convert liquid to gas

Explanation:

e

Answer:

B) Solvent

Explanation:

The substance being dissolved is called the solute and the liquid doing the dissolving is called the solvent. In order for a substance to dissolve, the molecules of the solute need to interact with the molecules of the solvent.

The student, begins emphasis, most, ends emphasis, likely trying to answer How does temperature affect the physical state of water.

A usually reversible change in the physical properties of a substance, like size or shape: Freezing a liquid is a physical change.

The temperature has a direct effect on whether a substance exists as a solid, liquid or gas. Generally, increasing the temperature turns solids into liquids and liquids into gases; reducing it turns gases into liquids and liquids into solids.

Hence, option D is correct.

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Answer:

This will be really short but pi2 is the condense amount that (425h209) will equal 4.98288493

Explanation:

[tex]27 ~\text{cal} = \dfrac{27}{1000} ~ \text{kcal} = 0.027~ \text{kcal.}[/tex]

Periodic table is important because it provides information, make easier to study and know about relationship between elements.

The periodic table is very important because it provides a huge amount of information about elements and their relationship to one another. The table can be used to know about the properties of elements.

So we can conclude that periodic table is important because it provides information, make easier to study and know about relationship between elements.

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The answer is the half life of phosphorus-32 is of 14 days .

The half-life of a radioactive isotope is the amount of time it takes for one-half of the radioactive isotope to decay.

The half-life of a specific radioactive isotope is constant; it is unaffected by conditions and is independent of the initial amount of that isotope.

Mass of atoms initially,

N₀ =2.0 g

Mass after 42 days,

N =0.25 g

mass left undecayed we have,

[tex]\rm\dfrac{N}{N_{0}} = \dfrac{1}{2^{n}}[/tex]

where  n  is number of half lives occured (the number of times it disintegrated into half of original)

[tex]\rm\dfrac{0.25}{2} = \dfrac{1}{2^{n}}[/tex]

[tex]\rm\dfrac{1}{8} = \dfrac{1}{2^{n}}[/tex]

[tex]\rm\dfrac{1}{2^{3}} = \dfrac{1}{2^{n}}[/tex]

n= 3

number of half lives occured in 42 days is 3

if half life is  [tex]\rm t_{\frac{1}{2} }[/tex]

then

3* (  [tex]\rm t_{\frac{1}{2} }[/tex]  )  = 42

[tex]\rm t_{\frac{1}{2} }[/tex] = 14 days

Therfore the half life of phosphorus-32 is of 14 days .

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Answer:

Calcium hydroxide is a white precipitate, too, and it won't dissolve if more sodium hydroxide is added to the solution. No significant precipitate will be formed between calcium ions and ammonia.