Name the process that releases carbon dioxide into the atmosphere.

(A) 14C undergoes beta decay since it has too many neutrons in its nucleus. In beta decay, a neutron is converted into a proton, and an electron and an antineutrino are emitted from the nucleus. In this case, 14C will decay into 14N with the emission of a beta particle.

(B) 120I undergoes positron emission since it has too many protons in its nucleus. In positron emission, a proton is converted into a neutron, and a positron and a neutrino are emitted from the nucleus. In this case, 120I will decay into 120Te with the emission of a positron.

(C) 102Ag undergoes beta decay since it has too many neutrons in its nucleus. In beta decay, a neutron is converted into a proton, and an electron and an antineutrino are emitted from the nucleus. In this case, 102Ag will decay into 102Cd with the emission of a beta particle.

(D) Sr-89 undergoes beta decay since it has too many neutrons in its nucleus. In beta decay, a neutron is converted into a proton, and an electron and an antineutrino are emitted from the nucleus. In this case, Sr-89 will decay into Y-89 with the emission of a beta particle.

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Kilocalorie is a unit of measuring the amount of energy of a reaction, but this is not the only unit, we can also have Joules as a unit, and the conversion is:

1 Kcal = 4184 Joules

Therefore if we have 3.25 Kcal, we will have:

3.25 * 4184 = 13600 Joules of energy, therefore letter D

Answer:d

Explanation:

The percentage yield of the given reaction was supposed to be

the formula for the calculation of the percentage yield was =actual yield/theoretical yield X 100

What is percentage yield ?

The percent yield equation is as follows:

(actual yield/theoretical yield) x 100% Equals percent yield

Where: actual yield is the quantity of product received from a chemical reaction theoretical yield is the amount of output obtained from the stoichiometric or balanced equation, utilizing the limiting reactant to calculate product (moles or grams).

The quantity of products generated from a chemical reaction is referred to as the real yield. The theoretical yield is the quantity of product calculated from the stoichiometric or balanced equation utilising the limiting reactant to determine product.

=(0.988/1.61) X 100

=61.36%

the percentage yield of the reaction was found to be 61.36%

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Answer:

The volume percent of methanol in the final solution is approximately 23.08%.

Explanation:

We must divide the volume of methanol by the entire volume of the solution, then multiply the result by 100 to determine the volume percent of methanol in the final solution.

The solution has a total volume of 75.0 mL + 250.0 mL = 325.0 mL, which is the sum of the quantities of methanol and water.

The volume percent of methanol can now be calculated as follows: (75.0 mL / 325.0 mL) 100 = 23.08%

Therefore, the final solution contains around 23.08% of methanol by volume. This indicates that the volume of the solution is roughly 23.08% made up of methanol, with the remainder being water.

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Answer: 0.83 m/s

Linear motion consists of 2: constant velocity motion with constant velocity and uniformly accelerated motion with constant acceleration

The valence states provided are general representations and may vary depending on specific conditions and coordination environments.

a. Uvarovite: The mineral formula for uvarovite is Ca3Cr2(SiO4)3. In this formula, the valence state of calcium (Ca) is +2, the valence state of chromium (Cr) is +3, and the valence state of silicon (Si) is +4. Oxygen (O) is usually assigned a valence state of -2.

b. Azurite: The mineral formula for azurite is Cu3(CO3)2(OH)2. In this formula, the valence state of copper (Cu) is +2, carbonate (CO3) has a valence state of -2, and hydroxide (OH) has a valence state of -1.

c. Cuprite: The mineral formula for cuprite is Cu2O. In this formula, the valence state of copper (Cu) is +1, and oxygen (O) is usually assigned a valence state of -2.

d. Gypsum: The mineral formula for gypsum is CaSO4·2H2O. In this formula, the valence state of calcium (Ca) is +2, sulfur (S) has a valence state of +6, and oxygen (O) is usually assigned a valence state of -2. The water molecules (H2O) do not have a net charge.

e. Galena: The mineral formula for galena is PbS. In this formula, the valence state of lead (Pb) is +2, and sulfur (S) has a valence state of -2.

It's important to note that the valence states provided are general representations and may vary depending on specific conditions and coordination environments.

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Answer:

b dissociate

Explanation:

Answer:

The atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of every atom of that element. The atomic number uniquely identifies a chemical element. ... The sum of the atomic number Z and the number of neutrons N gives the mass number A of an atom.

Answer:

Atoms of each element contain a characteristic number of protons. In fact, the number of protons determines what atom we are looking at (e.g., all atoms with six protons are carbon atoms); the number of protons in an atom is called the atomic number.

Explanation:

Answer:

its 210

Explanation:

Just add all atomic mass used in the formula together: 2*(14+16*3)+88= 2*62+88=124+88=210

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The relative formula mass of strontium nitrate Sr(NO₃)₂ is 210

The relative atomic masses of N, O and Sr are 14,16 and 88 respectively.

In calculating the relative atomic mass of an element with isotopes, the relative mass and proportion of each is taken into account. Adding the atomic masses together gives the relative formula mass of a compound

So, relative atomic mass of Sr(NO₃)₂ is calculated as

88+ 2(14+16×3) = 210

The atomic mass constant (symbol: mu) is defined as being 1/12 th of the mass of a carbon-12 atom. Since both quantities in the ratio are masses, the resulting value is dimensionless; hence the value is said to be relative atomic mass.

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If two pieces of the same metal have been cold worked to different degrees, their recrystallization temperatures can differ.

The temperature at which 50% recrystallization occurs in one hour is known as the recrystallization temperature. It is primarily determined by the melting point and impurities present in the metals.

The recrystallization temperature is the temperature at which 50% recrystallization occurs in one hour. It is primarily determined by the melting point and the presence of impurities in the metals.

This is not a constant temperature and is affected by a number of variables, including the following: As annealing time increases, the temperature of recrystallization decreases. s to ococococ have higher recrystallization temperatures than pure metals. As the amount of cold work increases, the temperature of recrystallization decreases.

The metal must be heated above its recrystallization temperature for these changes to occur. The recrystallization temperature of a metal is determined by its composition.

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In scientific investigations, the effect of fertilizer on plant growth can be studied by examining various variables. Two key variables in this context are the presence or absence of fertilizer (independent variable) and the size or growth of the plant (dependent variable).

When investigating the effect of fertilizer on plant growth, the independent variable is the presence or absence of fertilizer. This variable is controlled by having two groups of plants: one group receiving fertilizer (experimental group) and another group without fertilizer (control group). By comparing the growth of these two groups, we can determine the impact of fertilizer on plant size.

The dependent variable, on the other hand, is the size or growth of the plant. This variable is measured or observed as the outcome of interest. In this case, it would be the height, weight, or overall size of the plants.

By systematically changing the independent variable (presence or absence of fertilizer), we can observe how it affects the dependent variable (plant growth). The experimental group receiving fertilizer is expected to show greater plant growth compared to the control group without fertilizer. This allows us to draw conclusions about the effect of fertilizer on plant growth.

However, it is important to note that the specific outcome may vary depending on other factors such as plant species, soil conditions, and environmental factors. Conducting a controlled experiment while considering these factors helps in obtaining more reliable results.

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Answer:

a. "-ic"

Explanation:

The correct answer is a. "-ic".

For example:

Following the same logic, the name for HBr is Hydrobromic acid; and the name for HI is Hydroiodic acid.

The test on a urine chemical strip that should be held for 2 minutes before reading the results is the leukocyte esterase test.

The leukocyte esterase test is used to detect the presence of white blood cells in the urine, which can indicate a urinary tract infection. The test strip should be held in the urine sample for 2 minutes before reading the results to ensure accurate results.

It is important to follow the instructions for each individual test on the urine chemical strip, as different tests may have different recommended wait times before reading the results. Always be sure to read the instructions carefully and follow them for the most accurate results.

In summary, the leukocyte esterase test on a urine chemical strip should be held for 2 minutes before reading the results.

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Answer:

a)Carbon (iv) oxide; CO₂

b)It is used in fire extinguishers

c) i. It is denser than air

ii. It dissolves in water to form an acidic solution

Explanation:

a) Since the compound P is composed of one atom of carbon and two atoms of oxygen, the formula of the compound is CO₂. The name of the compound is carbon(iv) oxide.

b) Carbon (iv) oxide is a gas that is of great importance to living organisms. Plants require it for photosynthesis while human produce it during the process of respiration.

Industrially, it is used in carbonated drinks. It is also used in fire extinguishers

c) The properties of Carbon (iv) oxide include the following:

i) it is an odourless colorless gas

ii) it is denser than air

iii) it dissolves in water to form a weak acidic solution, etc.

The negatively charged electron in the plum pudding model, however, is smaller than an atom and is negatively charged.

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The endoplasmic reticulum (ER) is the structure responsible for the synthesis of fatty acids and steroids, as well as the detoxification and inactivation of drugs and potentially harmful substances.

The endoplasmic reticulum (ER) is an organelle found in eukaryotic cells, consisting of a network of membranous tubules and sacs. It plays a vital role in various cellular functions, including the synthesis of lipids such as fatty acids and steroids. The ER contains enzymes involved in the biosynthesis of these molecules, which are essential for cell membrane formation and hormone production.

Additionally, the ER is responsible for the detoxification and inactivation of drugs and potentially harmful substances. It contains enzymes, such as cytochrome P450 enzymes, that participate in the metabolism of various drugs and toxins. These enzymes modify the chemical structure of these substances, making them less toxic or more easily excreted from the body.

Overall, the endoplasmic reticulum is a crucial organelle involved in lipid synthesis, steroid production, and the detoxification and inactivation of drugs and harmful substances. Its diverse functions contribute to maintaining cellular homeostasis and protecting the organism from potential toxicities.

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Answer:

53676 J

Explanation:

m = 355 g

c = 2.4 J/gºC

ΔT = 63°C

q = mcΔT

  = (355)(2.4)(63)

  = 53676 J

The amount of heat is 53676J to raise the temperature of 355 g of ethanol.

Temperature is a measurement of the amount of energy of the atoms in a system or a physical quantity that expresses hot and cold.

Heat is energy that is transmitted through one body to some other due to a temperature differential. When two bodies of different temperatures come together, energy can be transferred (heat flows) from the hotter to the colder.

It can be determined by the formula:

q =mCΔT.

where, q is heat, m is mass , C is and T is temperature.

Calculation of heat is shown below:

It is given that, mass of ethanol = 355 g, c = \(2.4 J/g^{0}\) C, ΔT. = \(63^{0} C\)

Now, put the values of given data in heat formula:

q =mCΔT

= 355×2.4×63

=53676J.

Therefore, the amount of heat will be 53676J to raise the temperature of 355 g of ethanol

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A mass of 9.1 1031 kilograms (Kg). A wavelength of 1010m, or around the size of an atom, can be calculated from the de Broglie relation. Due to this, we may directly examine the atomic structure of a crystal using electron microscopes.

Using the de Broglie relation between the momentum p and the wavelength of an electron (=h/p, where h is Planck constant), the wavelength of an electron is computed for a given energy (accelerating voltage). When the wavelength is expressed in meters, 1/ stands for the number of waves in a wave train that can fit within a length of one meter, or, if the wavelength is expressed in centimeters, the number of waves that can fit within a length of one centimeter.

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Answer:

S Atomic mass:  32.06 AMU

Al Atomic mass:  26.98 AMU

S Molar mass:    32.06 g/mole

Al Molar mass:​    26.98 g/mole

Explanation:

The Periodic Table has the unique property that the atomic masses are numerically the same as the molar masses. Thus, g/mole may be subastituted for AMU:  they are equivalent.  Just change AMU to g/mole.

Answer:

The correct answer is 582.8.

Explanation:

To solve this problem, we must remember the rules for significant figures for addition.  Recall that the answer should have the same number of decimal places as the term with the least number of decimal places that we are adding.  In this case, we can see that out of our three terms, 98.3 has the least number of decimal places.  This lets us know that our answer should be rounded to the tenths place.

With this in mind, we can compute the addition.

246.24 + 238.278 + 98.3

= 582.818 (unrounded value)

However, we stated that our answer should be rounded to the tenths place.

Therefore, our answer is 582.8.

Hope this helps!

Answer:

Hope this helps u pls mark me brainlist

Explanation:

roentgenium (Rg), artificially produced transuranium element of atomic number 111.The element would have similar characteristics as the one next to it.

Unsaturated solution: a solution in which more solute can be dissolved.

Explanation:

Salt dissolved in water or even sugar dissolved in water is an unsaturated solution if the quantity of dissolved salt/sugar is below the saturation point.

unsaturated solution: a solution in which more solute can be dissolved.

Explanation:

A solution in which the maximum amount of solvent has been dissolved. Any more solute added will sit as crystals on the bottom of the container.

Answer:

It is endothermic because more energy is needed to break up the reactants versus the amount given off by the products

Explanation:

I took the test

I think its A. Low pressure indicates rising air, Which allows clouds to from.

Answer:

C=5

O=12

H=12

Explanation:

That the answer for your question

Answer:

C=5

O=12

H=12

Explanation:

Hope this helps

so dfhhdjdjjfjfjjdjdjdj

The equation,P(solution) = X(solvent * P(solvent), can be used to determine vapor pressure lowering. 300 grams of water is 300g x 1 mole/18.0g = 16.67 moles water. Thus, X = 16.67 moles water/17.07 moles total = 0.977 and the new pressure = 0.977 x 740 mm Hg = 723 mm Hg.