which of the following statements is true of iodine deficiency? group of answer choices it often is accompanied by zinc deficiency. it mainly affects the very elderly. it can cause mental impairment and brain damage. worldwide, the incidence is rare, thanks in large part to iodized salt. treatment often includes increased consumption of vegetables high in goitrogens.

The limiting reactant is the one with the least mole ratio.

It is limiting to use the reactant with the smallest mole ratio. Magnesium is the limiting reactant, with a predicted stoichiometric mole ratio of 4.12.

By dividing the number of moles of each reactant by its stoichiometric coefficient in the balanced chemical equation, you may determine which reactant is the limiting one. Calculate the maximum number of moles of product that can be produced from the limiting reactant using mole ratios.

4AsCl3+6H2O——> As406+12HCl

As4O6 + 12HCl --> 4AsCl3 + 6H2O

Balance: As4O6 + Hal --> AsCl3 + H2O

AsCl3 + H2O -->As4O6 + Hal

To learn more about limiting reactant  refer to:

https://brainly.com/question/26905271

#SPJ1

Answer:

I think chemical reaction

Explanation:

Answer:

Explanation:

X-ray

Answer:

C

Explanation:

Cyanide's formula can be found either on google on on a reference table at the "polyatomic ions" table. Hydrogen, H, has a charge of 1+ when bonded, and cyanide has a charge of 1- overall, so they will be in a one to one ratio while bonded. As such, the equation is HCN.

Answer:

d = 2.8 g/mL

Explanation:

Given data:

Mass of sample = 67.9 g

Volume of water = 28.0 mL

Volume of water + sample = 52.0 mL

Density of sample = ?

Solution;

Density is equal to the mass of substance over volume of substance.

Formula:

d = m/v

d = density

m = mass

v= volume

Now we will calculate the volume of sample.

Volume of sample = (volume of water+ sample) - volume of water

Volume of sample = 52.0 mL - 28.0 mL

Volume of sample = 24.0 mL

Now we will calculate the density.

d =67.9 g /24.0 mL

d = 2.8 g/mL

Answer:

A) a plant

Explanation:

Answer:

3.75 L

Explanation:

We can solve this problem by using Charles' law, which states:

Where subscript 1 stands for initial volume and temperature and subscript 2 for final volume and temperature, meaning that in this case:

We input the data:

And solve for V₂:

The radiation produced by the appliance would not be visible to the human eye.

To determine whether the wavelength of the kitchen appliance's radiation belongs to the visible region of the electromagnetic spectrum, we need to compare its wavelength to the typical range of wavelengths for visible light.

The visible region of the electromagnetic spectrum spans approximately 400 to 700 nanometers (nm) in wavelength. To convert the given frequency of 2450 MHz to wavelength, we can use the formula:

Wavelength = Speed of Light / Frequency

The speed of light is approximately 3.00 x 10^8 meters per second (m/s). Converting the frequency from megahertz (MHz) to hertz (Hz):

2450 MHz = 2450 x 10^6 Hz

Wavelength = (3.00 x 10^8 m/s) / (2450 x 10^6 Hz)

Calculating the wavelength gives us:

Wavelength = 0.122 meters or 122 millimeters (mm)

Since the wavelength of the kitchen appliance's radiation is larger than the range for visible light (400-700 nm), it falls outside the visible region of the electromagnetic spectrum.

To know more about radiation refer her

https://brainly.com/question/31106159#

#SPJ11

Answer:

Explanation:

Answer:

Water is a remarkable substance, and its unique properties are largely due to the presence of polar covalent bonds and hydrogen bonds in its structure. These characteristics play a crucial role in the physical and chemical properties of water, making it essential for life as we know it.

Explanation:

The polar covalent bonds in water arise from the unequal sharing of electrons between oxygen and hydrogen atoms. This results in the oxygen atom having a partial negative charge (δ-) and the hydrogen atoms having partial positive charges (δ+). These charges create polarity within the water molecule, leading to the formation of hydrogen bonds.

Hydrogen bonds occur when the partially positive hydrogen atom of one water molecule is attracted to the partially negative oxygen atom of another water molecule. These hydrogen bonds are relatively weak individually, but when present in large numbers, they contribute to the cohesion, surface tension, and high boiling point of water.

The importance of these bonds is manifold. The cohesion between water molecules due to hydrogen bonding enables water to form droplets, have a high surface tension, and flow freely, facilitating transport within organisms and in the environment. Additionally, hydrogen bonding leads to the high specific heat capacity and heat of vaporization of water, making it an effective regulator of temperature in living organisms and ensuring stable environmental conditions.

Furthermore, hydrogen bonds play a crucial role in the unique properties of water as a solvent. The polar nature of water allows it to dissolve a wide range of substances, including ionic compounds and polar molecules, facilitating various biological processes such as nutrient transport and chemical reactions in cells.

Answer:

Answer :

5

⠀

Step-by-step explanation:

Given,

⠀

{ \longrightarrow \qquad{ { \sf{ \dfrac{1}{x} + \dfrac{1}{y} + \dfrac{1}{z} = 0}}}}⟶x1+y1+z1=0

⠀

{ \longrightarrow \qquad{ { \sf{ {x}^{2} + {y}^{2} + {z}^{2} = 25 }}}}⟶x2+y2+z2=25

⠀

To Find :

{ \longrightarrow \qquad{ { \sf{ x + y + z }}}}⟶x+y+z

⠀

Solution :

Answer:

Explanation:90% of people marry there 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on nine comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love u this is irrelevent but idrc lol

Answer:

XY bond is the least polar

Explanation:

Given

\(W = 1.0\)

\(X = 2.0\)

\(Y = 2.5\)

\(Z = 3.5\)

Required

The least polar bond

First, we calculate the difference in the electronegativities

\(WX = X - W\)

\(WX = 2.0 - 1.0\)

\(WX = 1.0\)

\(WY = Y - W\)

\(WY =2.5 - 1.0\)

\(WY =1.5\)

\(WZ =Z-W\)

\(WZ =3.5 - 1.0\)

\(WZ =2.5\)

\(XY = Y -X\)

\(XY = 2.5 -2.0\)

\(XY = 0.5\)

\(XZ = Z -X\)

\(XZ = 3.5 -2.0\)

\(XZ = 1.5\)

\(YZ = Z - Y\)

\(YZ = 3.5 - 2.5\)

\(YZ = 1.0\)

The least of the above calculations will be the least polar.

Hence, XY is the least polar

The physical and chemical properties of a substance are determined by its atomic structure and composition.

Physical properties of a substance are those properties that can be observed or measured without changing the substance's chemical identity. For example, density, melting point, boiling point, color, odor, hardness, and conductivity are all physical properties.

Chemical properties, on the other hand, are properties that describe how a substance reacts with other substances to form new compounds. These properties are determined by the substance's chemical composition, or the types and numbers of atoms that make up the substance's molecules.

Know more about  physical and chemical properties:

https://brainly.com/question/1728902

#SPJ11

Answer:

Well, by definition,

molarity = moles of solute

               volume of solution

Explanation:

Now the moles of solute are a constant. The volume of solution MAY change substantially with increasing or decreasing temperature. In some calculations molality is used in preference, which is defined by the quotien

Hope this helps!

Se2+ and I- are isoelectronic because they both have 54 electrons and the same electron configuration, which is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6. The correct answer is C.

For more such question on isoelectronic

https://brainly.com/question/14511468

#SPJ11

Answer:

Explanation:

Isotope notation is of the form

A

Z

X

where  

Z

is the atomic number (number of protons),  

A

is the mass number (sum of protons and neutrons), and   X   is the element.

In Carbon- 14 ,   14  is the mass number (sum of protons and neutrons). This is our  A .

Carbon has the atomic symbol   C , and it has  6 protons. This is the atomic number, or  A . Thus, the isotope notation for Carbon- 14  is  14  6  C

Hope this helps!

Explanation:

Note that the point at which oxygen changes from liquid to gas is 90k. See the attached graph.

To plot the data, we can use a line graph with temperature (T) on the x-axis and density (d) on the y-axis. Here is a plot of the data:

From the plot, we can see that the density of oxygen decreases as the temperature increases. At around 90 K, there is a significant drop in density, indicating a change in state from liquid to gas. We can circle this temperature as the point at which oxygen changes from liquid to gas.

Therefore, we can circle the temperature 90 K as the point at which oxygen changes from liquid to gas.

Learn more about oxygen at:

https://brainly.com/question/13370320

#SPJ1

Answer:

70%

Explanation:

Just substract 100 % - 30%

Answer:

one generation to the next via DNA,

Explanation:

Heritable traits are known to be passed from one generation to the next via DNA, a molecule that encodes genetic information. ... Organisms inherit genetic material from their parents in the form of homologous chromosomes, containing a unique combination of DNA sequences that code for genes.

Answer:

Cell lol

Explanation:

answer B

Answer:

that is the structure

Explanation:

that is the structure

The chemical structure of 2-(2-Bromophenyl)butane can be written as follows:

\(CH_3(CH_2)_3CH(PhBr)CH_3\)

The arrangement of atoms and chemical bonds of a molecule or compound is called its chemical structure. They provide a visual representation of a molecule's three-dimensional form, which is important for understanding its characteristics and behavior in chemical processes.

For example, the chemical structure of 2-(2-Bromophenyl)butane can be written as follows:

\(CH_3(CH_2)_3CH(PhBr)CH_3\)

Where,

Therefore, the chemical structure of 2-(2-Bromophenyl)butane can be written as follows:

\(CH_3(CH_2)_3CH(PhBr)CH_3\)

Learn more about Chemical structure, here:

https://brainly.com/question/14481803

#SPJ2

Option D is correct.

In this scenario, work is positive and is done by the system. This is because the expansion of the gas results in an increase in its internal energy, which is equivalent to the work done by the system.

The increase in internal energy can be thought of as the transfer of energy from the system to its surroundings. When the gas expands, its volume increases, which results in a decrease in the pressure of the gas and an increase in its internal energy.

Work refers to the transfer of energy that occurs when a force acts on an object, causing it to move. In this scenario, we will examine work in a system of gases that is sealed in a cylinder and allowed to expand under constant pressure.

We can learn more about internal energy here:

https://brainly.com/question/11278589#
#SPJ11

Answer:

siks creo que creo que siks

Answer:

1730 cm

0.00256 km

5130 mm

The standard enthalpy change for reaction (3) is 117.1 kJ.

The standard enthalpy change for reaction (3) can be calculated by using the enthalpy changes of reactions (1) and (2) and applying Hess's Law.

To do this, we need to manipulate the given equations so that the desired reaction (3) can be obtained.

First, we reverse reaction (1) to get the formation of C2H4(g) from C2H6(g):

C2H4(g)C2H6(g) ΔH° = -52.3 kJ

Next, we multiply reaction (2) by 2 and reverse it to obtain 2 moles of C2H6(g) reacting to form 3 moles of H2(g):

2C2H6(g)2C(s) + 3H2(g) ΔH° = 169.4 kJ

Now, we add the two modified equations together:

C2H4(g)C2H6(g) ΔH° = -52.3 kJ
2C2H6(g)2C(s) + 3H2(g) ΔH° = 169.4 kJ

When adding these equations, the C2H6(g) on the left side cancels out with the C2H6(g) on the right side, leaving us with the desired reaction (3):

C2H4(g) + H2(g)C2H6(g) ΔH° = -52.3 kJ + 169.4 kJ = 117.1 kJ

Learn more about standard enthalpy here :-

https://brainly.com/question/28303513

#SPJ11

Answer:

Encourage readers to vary the design

Explanation:

Answer:

A. krypton

Explanation:

give me brainly