In Ionic compounds the charges of the cation and anion should cancel out.

True
False

Answer:

23millilitres.......

Answer:

8.822 × 10¹³ g Co

General Formulas and Concepts:

Chemistry - Atomic Structure

Explanation:

Step 1: Define

9.015 × 10³⁵ atoms Co

Step 2: Identify Conversions

Avogadro's Number

Molar Mass of Co - 58.93 g/mol

Step 3: Convert

\(9.015 \cdot 10^{35} \ atoms \ Co(\frac{1 \ mol \ Co}{6.022 \cdot 10^{23} \ atoms \ Co} )(\frac{58.93 \ g \ Co}{1 \ mol \ Co} )\) = 8.82189 × 10¹³ g Co

Step 4: Check

We are given 4 sig figs. Follow sig fig rules and round.

8.82189 × 10¹³ g Co ≈ 8.822 × 10¹³ g Co

The correct option is D) electronic vibrational and rotational transitions.

Electromagnetic radiation in the range from 200 to 800nm causes electronic vibrational and rotational transitions in molecules, which have important implications in various fields of science.

Electromagnetic radiation in the range from 200 to 800 nm, also known as the visible spectrum, can cause a variety of effects depending on its wavelength and intensity. This type of radiation is characterized by its oscillating electric and magnetic fields, which propagate through space at the speed of light.

One of the primary effects of electromagnetic radiation in this range is electronic, vibrational, and rotational transitions in molecules. This is because the energy of the radiation is sufficient to excite electrons in atoms and molecules, causing them to move to higher energy levels.

Additionally, electromagnetic radiation in this range can also cause vibrational and rotational excitation in molecules. Vibrational excitation occurs when the radiation causes the bonds in a molecule to vibrate, while rotational excitation occurs when the molecule itself rotates due to the interaction with the radiation.

These effects are important in many fields, such as chemistry, physics, and biology. For example, the absorption of electromagnetic radiation in the visible spectrum by pigments in the human eye is what allows us to see color. Similarly, the absorption of radiation by molecules in photosynthesis is what allows plants to convert sunlight into energy.

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Answer:

a. Ocean currents influence many marine climates.

c. The North Atlantic Drift gives Ireland a warm climate for its latitude.

a & c

brainliest pls

Answer:

The superscript after the letter

tells us the electrons are in the n=2 energy level.

Explanation:

After considering the given data we conclude and evaluating the given set of options we conclude that the from the following option all are acceptable units for density Except: g/ml  which is option A.

This is confirmed by the research materials , which provide a list of acceptable units for density, including:
Kilogram per cubic meter \((kg/m^3)\)
Gram per cubic centimeter \((g/cm^3)\)
Pound per cubic foot \((lb/ft^3)\)
Pound per cubic inch \((lb/in^3)\)
All of these units are acceptable for density, but g/ml is not included in the list. Therefore, from the following option all are acceptable units for density Except: g/ml which is option A.  
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The complete question is
All of the following are acceptable units for density Except:
a)g/ml
b)kg/l
c)g/cc
d)g/cm

Answer:

D

Explanation:

A single-replacement reaction occurs when one element replace another in a single compound.

\(single replacement = dual replacement = d - 1 replacement = e - d-e = single replacement or 1^2 x^{2} \lim_{n \to \infty} a_n x \left \{ {{d=2} \atop {e=2}} \right.\)

The law of conservation of energy has not been broken, provided energy is released from the fission process.

The law states that the total energy of a process is conserved. That is, the total energy or mass of a system before and after undergoing processing remains the same. However, some of the mass/energy can be converted to another form.

When a material undergoes fission, the sum total of the mass of the particles formed should be equal to the mass of the starting materials, provided that all other things remain the same.

However, if energy is released from the fission process, it means that some of the mass of the starting materials has been converted to energy and released to the environment.

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The rest energy of a proton is approximately 1.5033 x 10^-10 joules or 938.27 MeV.

The rest energy of a proton can be calculated using Einstein's famous equation, E=mc^2, where E is the energy, m is the mass, and c is the speed of light. The mass of a proton is approximately 1.0073 atomic mass units, which is equivalent to 1.6726 x 10^-27 kg.
Using this mass value, we can calculate the rest energy of a proton as follows:
E = (1.6726 x 10^-27 kg) x (299792458 m/s)^2
E = 1.5033 x 10^-10 joules
To convert this value to MeV, we need to use the conversion factor 1 MeV = 1.6022 x 10^-13 joules:
E = (1.5033 x 10^-10 joules) / (1.6022 x 10^-13 joules/MeV)
E = 938.27 MeV
Therefore, the rest energy of a proton is approximately 1.5033 x 10^-10 joules or 938.27 MeV.

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Answer:

B

P

K

Explanation:

K: 203pm

B: 84pm

P: 107pm

There isn't an E on the Periodic Table?!

distillation

filtration

distillation

sedimentation

using magnet

Hope this helps

Answer:

Changing in vloume

Explanation:

Decreasing the volume of a gas increases the pressure of the gas. ...More colinse mean more force, so the pressure will increase. When the volume decreases, the pressure increases. This shows that the pressure of a gas is inversely proportional to its volume.

Change in temperature

The temperature of the gas is proportional to the average kinetic energy of its molecules. Faster moving particles will collide with the container walls more frequently and with greater force. This causes the force on the walls of the container to increase and so the pressure increases.

*proportional* - in math it is said as when 2 varying quantities come together

Answer:

1.

The energy lost by the water is given by:

where

m = 3.0 kg = 3000 g is the mass of water

Cs = 4.179 J/g•°C is the specific heat

is the change in temperature

Substituting,

2.

The energy added to the aluminium is given by:

where

m = 0.30 kg = 300 g is the mass of aluminium

Cs = 0.900 J/g•°C is the specific heat

is the change in temperature

Substituting,

4. 42.9 g

The mass of the water sample is given by

where

is the heat added

is the temperature change

Cs = 4.179 J/g•°C is the specific heat

5. 115.5 J

The heat used to heat the copper is given by:

where

m = 5.0 g is the mass of copper

Cs = 0.385 J/g•°C is the specific heat

is the change in temperature

6. 0.185 J/g•°C

The specific heat of iron is given by:

where

Q = -47 J is the heat released by the iron

m = 10.0 g is the mass of iron

is the change in temperature

Substituting,

Substituting,

Substituting,

Explanation:

The equilibrium constant, Kc is 5.6 * 10^-4.

When a chemical reaction reaches equilibrium, the equilibrium constant (usually denoted by the symbol K) provides information about the relationship between the reactants and the products. The equilibrium constant of concentration (denoted by Kc) of the a chemical reaction at equilibrium, for example, can be defined as the ratio of product concentration to reactant concentration, each raised to one‘s respective stoichiometric coefficients.

Given equation

      2NOCl ⇄ 2NO + Cl2

According to ICE table

                   2NOCl   ⇄    2NO  +  Cl2

I                      1.25             0            0

C                     -2x              2x          x

E                   1.25-2x         2x          x

Hence,

 1.25 - 2x = 1.10

              x = 0.075

concentration of NOCl = 1.10/2.5 = 0.44 M

[NO]   = 2x/2.5 = 0.06 M

[Cl2]   =  x/2.5 = 0.03 M

\(K_{c} = \frac{[NO]^{2} [Cl_{2} ]}{[NOCl]} \\ \\ = \frac{(0.06)^{2} (0.03)}{(0.44)^{2}} \\ \\ = 5.6 * 10^{-4}\)

Hence, the equilibrium constant is 5.6 * 10^-4.

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Theoretical yield =0.15 g

% yield = 15%

reaction

C6H12O6 → 2C2H5OH + 2CO2

from above reaction, we get to know that,

1 mole of glucose → 2 mole ethanol

for 4 mole of glucose → 8 mole of ethanol

\frac{55.2}{8(46)} = yield of ethanol

yield of ethanol = 0.15g

% yield = (experimental/theoretical )*100

% yield of ethanol = 0.15 x 100 =15%

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Answer:

15.8 m/s

Explanation:

v= u+at

v= 32+(-1.5×10.8)

v=32-16.2

v=15.8m/s

The fact that real yield is lower than theoretical yield is not due to the conservation of mass. According to the rule of conservation of mass, no new mass may be formed during a chemical process.

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the question is incomplete. the question you are looking for is

Which of the following is not a reason why actual yield is less than theoretical yield?

A. Impure reactants present

B. Loss of product during purification

C. Conservation of mass

D. Competing side reactions

Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

Force = 50 × 5

We have the final answer as

Hope this helps you

Answer:

All are reflective except for stone

i guess it is stone

Explanation:

Hope it helps!!!

\(\large\underline{\underline{\maltese{\orange{\pmb{\sf{\: Reasoning :-}}}}}}\)

Answer:

Amoeba has no special respiratory organs and no respiratory pigments but there is a free exchange of gases by diffusion through the general body surface which is permeable to the gases dissolved in water

Answer:

Element A and element D

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Answer:

People may seem and act normally during the fugue, or they may appear moderately bewildered and draw no notice. When the fugue is over, however, people are thrown into a new scenario with no recall of how they got there or what they were doing.

Explanation:

Answer: D). the likelihood of an atom to gain an electron from another atom during bonding​

Explanation: The tendency of an atom in a molecule to attract the shared pair of electrons towards itself is known as electronegativity.

Answer:

so the order is grass, which gets eaten by the grasshopper, which is eaten by the frog, which gets eaten by the snake. grass wpuld be at top, snake at bottom.

Explanation:

hope this helps

In an ecosystem, the first trophic level is for grass followed by , grasshopper,snake and  then frog.

An ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by  action of microbes nutrients are released back in to the soil.

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Answer:

Explanation:

Let final temperature be T .

vapor is at 102⁰C

loss of heat by vapor in turning into water at 100⁰C

= 2.6 x 2 x 1.996 + 2.6 x 2260 = 5886.37 J

loss of heat to lower temperature to T

2.6 x 4.186 x ( 100 - T )

1088.36 - 10.88 T

Total heat loss = 5886.37 + 1088.36 - 10.88 T

= 6974.73 - 10.88 T

heat gain by silver to gain temperature from 1⁰C to T⁰C

= 1250 x ( T - 1 ) x .235 = 293.75 T - 293.75

heat gain = heat loss

293.75 T - 293.75  = 6974.73 - 10.88 T

304.63 T = 7268.48

T = 23.86°C .

Answer:

Graphing data can help you to recognize changes in what your doing.

Explanation:

Answer:

Explanation:

To identify trends, make predictions, and recognize anomalous data. Helps you understand what your data means or a picture of your graph. A graph wich the points form a straight line.