CHEMISTRY HIGH SCHOOL

The place in the back of your eye that receives images is called the .retina,iris,cornea,pupil

Answers

Answer 1

Answer: retina receives the Images .

Answer 2

Answer:

Answer:

Its the retina

Explanation:

Related Questions

2 ways in which the carbon is stored for a long time
For each element in the table below, use the Gizmo to find the number of valence electrons and the list thevalence based on the Lewis diagram. Then find the sum of these numbers.IF SOMEONE COULD JUST HELP ME OR EXPLAIN HOW TO DO IT PLEASE! THANK YOU
Which combination is the best choice to prepare a buffer with a ph of 9.0? which combination is the best choice to prepare a buffer with a of 9.0? nh3; nh4cl (pkb for nh3 is 4.75) hcho2; nacho2 (pka for hcho2 is 3.74) c5h5n; c5h5nhcl (pkb for c5h5n is 8.76) hno2;nano2 (pka for hno2 is 3.33)?
Under which conditions of temperature and pressure would a 1-liter sample of a real gas behave most like an ideal gas?(1) 100 K and 0.1 atm (2) 100 K and 10 atm (3) 500 K and 0.1 atm (4) 500 K and 10 atm
When plastic deformation of a material occurs, the material _____.

What is the molarity of a solution of 14.0 g NH4Br in enough H2O to make 150 mL of solution?

Answers

Explanation:

Molarity is defined as the number of moles per liter of solution.

Mathematically, Molarity = $(no. of moles)/(volume of solution in liter)$

Since it is given that the molarity of a solution of 14.0 g and volume is 150 mL or 0.15 L.

Whereas number of moles = $(mass)/(molar mass)$

So, molar mass of $NH_(4)Br$ is 97.94 g/mol.

Thus, number of moles = $(14.0 g)/(97.94 g/mol)$

= 0.142 mol

Therefore, calculate the molarity as follows.

Molarity = $(no. of moles)/(volume of solution in liter)$

= $(0.142 mole)/(0.15 L)$

= 0.946 mol/L

Hence, we can conclude that molarity of the solution is 0.946 mol/L.

Final answer:

The molarity of the solution is approximately 0.952 M.

Explanation:

To calculate the molarity of the solution, we need to convert the given mass of NH4Br to moles. The molar mass of NH4Br is 97.94 g/mol. So, 14.0 g of NH4Br is equal to 0.143 mol. Next, we convert the given volume of the solution to liters, which is 0.150 L. Finally, we divide the number of moles by the volume in liters to find the molarity.

Molarity (M) = moles/volume (L)

Therefore, the molarity of the solution is approximately 0.952 M.

Learn more about molarity here:

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Since a element has a pH number of 7, meaning it is ______. That element can be classified as neither a ____ or a _____. Also, is this a balanced equation?

C4 + O2 -----> 4CO + O2

Answers

If a number has a pH of 7, it is neutral, therefore, one blank is neutral.

1. Neutral

Therefore, the element is not an acid or a base.

2. Acid, Base

That is NOT a balanced equation because:

c=4 o=2
c=4 o = 6

Not balanced, o has 6 and one side it has 4. It contradicts the Law of conversation of mass.

- - Since a element has a pH number of 7, meaning it is neutral. That element can be classified as neither a acid or a base.
- - No this is not balanced.
- - This is because its no balanced considering the o has 6 sides and 4 has one.
- - Because of this it is not true based on the com (conversion of mass) This law was made by Antoine Lavoisier and using his law I was able to know that it was not a balanced equation.

In chemistry class, Allen determined the effectiveness of various metals in releasing hydrogen gas from hydrochloric acid. Several weeks later, Allen read that a utilities company was burying lead next to iron pipes to prevent rusting. Allen hypothesized that less rusting would occur with the more active metals. He placed the following into 4 separate beakers of water: (a) 1 iron nail, (b) 1 iron nail wrapped with an aluminum strip, (c) 1 iron nail wrapped with a magnesium strip, and (d) 1 iron nail wrapped with a lead strip. He used the same amount of water, equal amounts (mass) of the metals, and the same type of iron nails. At the end of 5 days, he rated the amount of rusting as small, moderate, or large. He also recorded the color of the water. What is the independent variable?a) the amount of water
b) the metals strips
c) amount of rust
d) hydrochloric acid

Answers

Answer:

b) the metals strips

Explanation:

In an experimental design, an independent variable is a variable that is changed or manipulated in a series of experiments. An independent variable is not dependent on any other variable in the experiment. The hypothesis for this experiment is stated to be: "If the chemical activity of the metallic wrapper is increased, then less rusting of iron will occur. The independent variable relates to the type of metal wrapping strip, and the dependent variables are the amount of rusting and color of the water.

We can also use the equation for enthalpy change for physical phase changes. Consider the phase change H2O(l) → H2O(g). Calculate ΔHrxn.Use ΔHf values from the table above.

ΔHrxn = _____

Answers

Answer: The value of enthalpy of the given reaction is 44.000 kJ/mol , that is energy is supplied to water to change into water vapors

Explanation:

$H_2O(l)\rightarrow H_2O(g),\Delta H_(rxn)=?$

Enthalpy of formation of water in liquid state, $\Delta H_(f,H_2O(l))=-285.820 kJ/mol$

Enthalpy of formation of water in gaseous state, $\Delta H_(f,H_2O(g))=-241.820 kJ/mol$

$\Delta H_(rxn)=\sum \Delta H_f \text{of products}-\sum \Delta H_f \text{of reactants}$

$\Delta H_(rxn)=(-241.820 kJ/mol)-(-285.820 kJ/mol)=44.000 kJ/mol$

The value of enthalpy of the given reaction is 44.000 kJ/mol, that is energy is supplied to water to change into water vapors.

Standard molar enthalpy:
H2O ( liquid water ) : - 285.8 KJ/mole
H2O ( water vapor ) : - 241.8 KJ / mole.
ΔHrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0
Answer: B ) 44.0 KJ

Which is an example of pseudoscience? A. use of X-rays to observe the bones of the arm B. use of DNA analysis to determine paternity C. use of vaccines to prevent the occurrence of disease D. use of astrology to predict the personality of a child

Answers

Answer is D. use of astrology to predict the personality of a child

Astrology is not a science, astronomy is a science.
Astrology is more related to myths, legend and human interpretation of the sky, universe, planets.

Which is an example of pseudoscience?
Answer:
D. use of astrology to predict the personality of a child

Write the net ionic equation for the following reaction:

AgC2H3O2(aq) + CaCl2(aq) →

Answers

Answer:

2Ag^+(aq) + 2Cl^-(aq) --------> 2AgCl(s)

Explanation:

The net ionic equation reflects the main reaction that occurred in the system. It tells you the most important reaction that took place.

If we first put down the balanced molecular equation for the reaction, we have;

CaCl2(aq) + 2 AgC2H3O2(aq) ---------> 2 AgCl(s) + Ca(C2H3O2)2 (aq)

The net ionic equation is;

2Ag^+(aq) + 2Cl^-(aq) --------> 2AgCl(s)

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A 182 pound male body was found decomposing in a dense wooded area 1.43 kilometers away from the nearest road. How many meters would a suspect have to drag the body into the woods if the victim was already deceased and transferred to this secondary location from the vehicle

The blue color of the sky results from the scattering of sunlight by molecules in the air. The blue light has a frequency of about 7.03 × 1014 Hz. Calculate the wavelength (in nm) associated with this radiation, and calculate the energy (in joules) of a single photon associated with this frequency. Enter your answers in scientific notation.

How many mL of a stock solution of 2.00 M KNO3 are needed to prepare 100.0 mL of 0.15M KNO3? with work plz

What is the law of conservation of mass? How it is related to balancing chemical equations