DNA forms two strands. One of the strands of a piece of a DNA molecule has the bases ATA.

Which bases does the other strand have?
Select one:

A: CAC.

B: TAT.

C: GTG.

D: ATA.

Answer:

cannot be measure

Hope this helps :) !!!

The final concentration of the reactant of a first order reaction can be determined from the rate constant equation. The concentration of ammonium carbonate after 39 s will be 0.003 M.

Rate constant of a reaction is the rate of reaction when one molar concentration of the reactant is involved in the reaction. The expression for the rate constant k for first order reaction is :

k = 1/t ln (C0/Ct)

Where C0 be the initial concentration and Ct be the concentration after t seconds.

Given that C0 of ammonium nitrate = 0.957 M

rate constant = 0.196 /s

t = 39 s.

The concentration after 39 seconds is calculated as follows:

0.196 /s = 1/39s ln (0.957 M / Ct)

Ct = 0.957 / (ln⁻¹ (0.196 × 39))

    = 0.003 M.

Therefore, the concentration of ammonium carbonate after 39 seconds will be 0.003 M.

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Answer:

no, and next time take it right

Explanation:

The specific heat capacity of a substance, also known as the massic heat capacity or massic heat capacity in thermodynamics, is the heat capacity of a sample of the substance divided by the mass of the sample. So, the energy gain by sample will be 506J

We know that, the heat energy gained will be calculated by the formula,

Q=mcΔT

where,

Q= Heat energy gained

m=mass

c= specific heat capacity

ΔT= Change in temperature

So, Given,

m= 5.00g ,

ΔT= 419K -306K= 113K

c= 0,897J/gK

Q=mcΔT

Q= 5.0×0.897×113

Q= 506J

So, the energy gained by sample of Aluminum will be 506 J when it is warmed from 306 K to 319K , in which temperature difference is 113K

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Answer: The value of the equilibrium constant Kc for this reaction is 0.088

Explanation:

\(Molarity=\frac{x}{M\times V_s}\)

where,

x = given mass

M = molar mass

\(V_s\) = volume of solution in L

Equilibrium concentration of \(CaCO_3\) = \(\frac{25.3}{100\times 9.0}=0.028M\)

Equilibrium concentration of \(CaO\) = \(\frac{14.9}{56\times 9.0}=0.029M\)

Equilibrium concentration of \(CO_2\) = \(\frac{33.7}{44\times 9.0}=0.085M\)

The given balanced equilibrium reaction is,

\(CaCO_3(s)\rightleftharpoons CaO(s)+CO_2(g)\)

The expression for equilibrium constant for this reaction will be,

\(K_c=\frac{[CaO]\times [CO_2]}{[CaCO_3]}\)  

Now put all the given values in this expression, we get :

\(K_c=\frac{0.029\times 0.085}{0.028}=0.088\)

Water, ice, acids, salts, plants, animals, and temperature fluctuations are all mechanical weathering agents. Erosion is the process by which the broken pieces of rock and mineral are moved away after a rock has been cracked.

Rocks that have holes or are porous (have holes) experience freeze-thaw weathering (allows water to pass through). In this case, mechanical weathering is evident. Different fissures in the rock allow water to enter (from rain, melting snow, or ice).

Weathering that releases pressure. Definition. expansion associated with the release of confining pressure when deeply buried rock is unroofed, leading to the development of fractures near the surface of solid rock. Typically, fractures spread along surfaces parallel to and near the surface.

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Dichotomous keys for the above can be:

A dichotomous key is a tool used to identify species of plants, animals, or other objects based on a series of choices between pairs of contrasting characters.

To create a dichotomous key, follow these steps:

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Answer:

Example 1

palladium(II) nitrate,

Example 2

Metal catalysts such as Fe, Ni, Mo, and Co are routinely used in the manufacture of CNMs.

Explanation

The three metals used in catalytic converters — rhodium, platinum and palladium — are part of a category known as platinum group metals, or PGMs, which are known for their catalytic properties.

Answer:

Explanation:

From the given information:

The energy of photons can be determined by using the formula:

\(E = \dfrac{hc}{\lambda}\)

where;

planck's constant (h) = \(6.63 \times 10^ {-34}\)

speed oflight (c) = \(3.0 \times 10^8 \ m/s\)

wavelength λ = 58.4 nm

\(E = \dfrac{6.63 \times 10^{-34} \ J.s \times 3.0 \times 10^8 \ m/s}{58.4 \times 10^{-9 } \ m}\)

\(E =0.34 \times 10^{-17} \ J\)

\(E = 3.40 \times 10^{-18 } \ J\)

To convert the energy of photon to (eV), we have:

\(1 eV = 1.602 \times 10^{-19} \ J\)

Hence

\(3.40 \times 10^{-18 } \ J = \dfrac{1 eV}{1.602 \times 10^{-19 } \ J }\times 3.40 \times 10^{-18 } \ J\)

\(E = 2.12 \times 10 \ eV\)

E = 21.2 eV

b)

The equation that illustrates the process relating to the first ionization is:

\(Hg_{(g)} \to Hg^+ _{(g)} + e^-\)

c)

The 1st ionization energy (I.E) of Hg can be calculated as follows:

Recall that:

I.E  = Initial energy - Kinetic Energy

I₁ (eV) = 21.2 eV - 10.75 eV

I₁ (eV) = 10.45 eV

Since ;

\(1 eV = 1.602 \times 10^{-19} \ J\)

∴

\(10.45 \ eV = \dfrac{1.602 \times 10^{-19 } \ J }{ 1 \ eV}\times 10.45 \ eV\)

Hence; the 1st ionization energy of Hg atom = \(1.67 \times 10^{-18} \ J\)

\(1.67 \times 10^{-21} \ kJ\)

Finally;

\(I_1 \ of \ the \ Hg (kJ/mol) = \dfrac{1.67 \times 10^{-21 \ kJ} \times 6.02 \times 10^{23} \ Hg \ atom }{1 \ Kg \ atom }\)

\(\mathbf{= 1.005 \times 10^3 \ kJ/mol}\)

Answer:

\(Y=34.3\%\)

Explanation:

Hello there!

In this case, according to the balanced chemical reaction:

\(2Al + Cr_2O_3 \rightarrow Al_2O_3 + 2Cr\)

We notice there is a 1:1 mole ratio between Al2O3 and Cr2O3; thus, the following stoichiometric setup is used to compute the theoretical yield first:

\(m_{Al_2O_3 }=23.3gCr_2O_3*\frac{1molCr_2O_3}{151.99gCr_2O_3} *\frac{1molAl_2O_3}{1molCr_2O_3} *\frac{101.96gAl_2O_3}{1molAl_2O_3} \\\\m_{Al_2O_3}=15.6gAl_2O_3\)

Thus, the percent yield turns out:

\(Y=\frac{5.35g}{15.6g} *100\%\\\\Y=34.3\%\)

Best regards!

Answer:

Answer: ... When iron is exposed to the environmental condition it terribly reacts with water and air and ends up with iron rusting. Iron articles are therefore painted off so that iron can not react with water and air.

I hope this will help you...

The net force of the runner, given the data from the question is 280 N

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

The net force of the runner can be obtained as illustrated below:

Net force = Exerting force - resistance force

Net force = 325 - 45

Net force = 280 N

From the calculation made above, we can conclude that the runner's net force is 280 N

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The net force of the runner would be 280 N.

Hope this helps! Also, if you need help with the other questions regarding this assignment, feel free to check out the study set I made on Quizlet. Thanks and good luck!

Quizlet - "Unit 6: Lesson 2 Newton's First Law QC"

h t t p s : / / q u i z l e t. c o m / 7 3 7 7 5 9 5 5 5 / u n i t - 6 - l e s s o n - 2 - n e w t o n s - f i r s t - l a w - f l a s h - c a r d s / ? n e w

2 H2(g) + O2(g) → 2 H2O(g) (1)

Don't forget to balance your reaction.

First, we need to determine which is the limiting reactant, H2 or O2.

Before we are doing this, we must assume STP conditions: temperature of 273 K (0° Celsius or 32° Fahrenheit) and the standard pressure of 1 atm.

Under these conditions, one mole of a gas occupies 22.4 L.

The Limiting Reactant:

Use stoichiometry and (1)

Remember: STP => 1 mol of gas = 22.4 L

2 x 22.4 L of H2 ----------- 22.4 L of O2

40 L of H2 ----------- x

From this we say the limiting reactant is O2, we have exactly 20 L of this gas, and stoichiometry says that we need 20L.

The volume of water:

We use O2 to determine the volume of water,

22.4 L of O2 --------- 2 x 22.4 L of water

20 L of O2 --------- y

y = 40 L

Answer: 40L of water

The climate of a region is influenced by large bodies of water like oceans, seas, and major lakes. As a result, coastal regions will have different summer and winter temperatures.

The weather in Tahoe is dry and moderate. There is relatively little humidity even in the summer, and snowstorms in the winter are when most precipitation occurs. The lake lies 1,890 meters above sea level at an elevation of 6,200 feet, although the nearby mountain peaks are between 9,000 and 10,000 feet higher (2,743 to 3,048 meters.)

In Nevada, Lake Tahoe is used as a reservoir for municipal and irrigation water storage. About 75% of the water supply for the quickly expanding Reno-Sparks region comes from Lake Tahoe and a few smaller publicly and privately owned reservoirs in the Truckee River system.

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We must first find the limiting reactant in order to calculate how many sulphur trioxide molecules were generated. The amount of product that can be created depends on the amount of reactant that is entirely consumed during the reaction.

Calculating the number of mols involves dividing the given mass by the molar mass. Hence, 78.00 grams of sulphur trioxide contain 5.8711023 molecules.

A chemical substance with the chemical formula SO3 is known as sulphur trioxide. Sulfur trioxide can be found in a variety of forms with various chemical species and crystal structures. It emits fumes into the air at ambient circumstances and is colourless in liquid form.

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Answer:

name four agricultural inputs are subsidized by the government

0.297 kJ of heat is needed to raise the temperature of 10g of aluminum from 22 degrees Celsius to 55 degrees Celsius.

The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius.

It is a measure of how much energy it takes to raise the temperature of a substance. It is the amount of heat necessary to raise one mass unit of that substance by one temperature unit.

It is given by the formula -

                                                  Q = mcΔT

where, Q = amount of heat

m = mass

c = specific heat

ΔT = Change in temperature

Given,

mass = 10g

c = 0.901J/g⁰C

Initial temperature (T₁) = 22⁰C

Final Temperature (T₂) = 55⁰C

Q = mcΔT

= 10 × 0.901 × (55 -22)

= 297.33 J = 0.297 kJ

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The observation that compound A releases H2 gas while compound B does not when treated with Na metal can be explained by considering the structural differences between the two compounds and their ability to undergo specific reactions.

Compound A and compound B both have the molecular formula C₂H₆O, which indicates that they both contain two carbon atoms, six hydrogen atoms, and one oxygen atom. However, the difference lies in the arrangement of these atoms within the molecules. One possible explanation for the observed difference is that compound A is an alcohol, specifically ethanol (CH₃CH₂OH), while compound B is an ether, such as dimethyl ether (CH₃OCH₃). The presence of the hydroxyl group (-OH) in ethanol enables it to undergo a reaction with sodium metal, known as the metal-acid reaction. In this reaction, the metal displaces the hydrogen from the hydroxyl group, forming sodium ethoxide (CH₃CH₂ONa) and releasing hydrogen gas (H₂). On the other hand, ethers like dimethyl ether lack the hydroxyl group and therefore cannot undergo the metal-acid reaction. Consequently, when compound B is treated with sodium metal, no hydrogen gas is released. The ability of compound A to release hydrogen gas while compound B does not when treated with sodium metal can be attributed to the presence of a hydroxyl group in compound A (ethanol), enabling it to undergo a metal-acid reaction, whereas compound B (dimethyl ether) lacks the necessary functional group and thus does not undergo this reaction.

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Answer:

BUDDY YO

Explanation:

Answer:

false

Explanation:

It is an amine, and it has less polar nitrogen-hydrogen and oxygen-hydrogen bonds.

A compound's boiling point is a physical characteristic. These intramolecular linkages between the molecules that make up a chemical affect these physical characteristics.

Alcohols and amino acids have the same kind of intermolecular linkages. The hydrogen bond is the name of this kind of bond.

The electrical attraction between a hydrogen atom from one molecule and an electronegative atom from a nearby molecule is known as a hydrogen bond.

The strength of the bond is in the following order: H.....F > H.....O > H......N

The H....N hydrogen bonds exist in amines, whereas the H....O hydrogen bonds exist in alcohols.

Consequently, the alcohol's hydrogen bonds are stronger and it will impart a higher boiling point on the compound.

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Answer:uses world like

Explanation:

To graph the function g(x) = f(-x), you can start with the graph of f(x) and then reflect it about the y-axis.

To find the graph of the function g(x) = f(-x), we can start with the graph of the function f(x) and then reflect it about the y-axis.

If the graph of f(x) is symmetric with respect to the y-axis, meaning it is unchanged when reflected, then g(x) = f(-x) will have the same graph as f(x).

However, if the graph of f(x) is not symmetric with respect to the y-axis, then g(x) = f(-x) will be a reflection of f(x) about the y-axis.

In either case, the resulting graph of g(x) = f(-x) will be symmetric with respect to the y-axis.

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Answer:Lymphatic malformations (LM), also known as lymphangiomas, are characterized by the overgrowth of lymphatic vessels during pre- and postnatal development.

Answer: 75° C for mercury, 40.59° C for iron

Explanation:

the equation used to solve this problem is q=mcΔT ( where q is heat in joules, m is mass in grams, c is the specific heat capacity, and ΔT is the change in temperature in degrees celsius)

For mercury:

q = mcΔT

1050J = (150g)(0.140J/g°C)(final T - 25°C)

\(\frac{1050}{(150)(0.140)}\) = final T - 25

Final T = \(\frac{1050}{(150)(0.140)}\) - 25

Final T = 75°C

For iron:

q = mcΔT

1050J = (150g)(0.449J/g°C)(final T - 25°C)

\(\frac{1050}{(150)(0.449)}\) = final T - 25°C

final T = \(\frac{1050}{(150)(0.449)}\) + 25

Final T = 40.59°C

\(\boxed{\sf Density=\dfrac{Mass}{Volume}}\)

\(\\ \sf{:}\!\!\implies Density=\dfrac{195}{25}\)

\(\\ \sf{:}\!\!\implies Density=7.8g/mL\)

Numbers are placed before the elements and molecules in a chemical equation so as to balance the equation so that it has the same number of atoms of each element on each side and s denoted as option B.

This is referred to as a symbolic representation of a chemical reaction and it contains the reactants and products in it thereby providing more information.

It has numbers in front of them so as to make the equation balance as the number of atoms of elements on the reactant side must be equal to that on the product side.

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The dissociation of cadmium chloride is as follows: CdCl₂(s) → Cd⁺²(aq) + 2Cl⁻(aq)

Dissociation is the process by which a compound body breaks up into simpler constituents; said particularly of the action of heat on gaseous or volatile substances.

It is a chemical reaction in which a compound breaks apart into two or more components. The general formula for a dissociation reaction follows the form:

AB → A + B

According to this question, cadmium chloride undergoes dissociation into cadmium and chlorine ions as follows:

CdCl₂(s) → Cd⁺²(aq) + 2Cl⁻(aq)

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Answer:

24.088 * 10^23 atoms

Explanation:

The number of atoms in 4 moles of any atom is a constant since 1 mole has 6.022 * 10^23 atoms which is not affected by any property of any atom

So, 4 moles of Na will have 4 * 6.022 * 10*23 atoms

24.088 *10^23 atoms are present in 4 moles of any element

Answer:

310K

Explanation:

Rearrange PV=nRT to get T=PV/nR

T=(2.0L)(0.75atm)/(0.5mol)(0.08206)

=36.5 or 37

add 273 for K to get

310

Answer: Iron

Explanation: There are little minnerals that make it magnetic.