What is the mollusk tongue called?
B

Explanation:

It found a small but statistically significant association between reduced health care spending and increased death rates among children less than a year old, specifically that a10% reduction in health care spending led to an increase in infant mortality of 0.5% for boys and 0.4% for girls.

Answer:

the volume of the gas will decrease

Answer:

-2911 kJ

Explanation:

Step 1: Given data

Step 2: Calculate the change in the internal energy (ΔE)

We will use the following expression.

ΔE = Q + W

ΔE = 599.0 kJ + (-3510 kJ) = -2911 kJ

When investigative officers get to a crime scene, they do not need to collect water samples.

A crime scene is a place where an offence has been committed. It is usually cordoned off to enable investigation of the crime and the collection of samples.

When investigative officers get to a crime scene, they do not need to collect water samples.

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Answer:A

Explanation:.

Answer:

True if by rifting you mean continental rift. If not idk.

Answer:

0.93 M

Explanation:

Molarity = \(\frac{Moles}{Volume}\)

4.0M = \(\frac{x}{0.007 L}\)

4.0 M x 0.007 L = Moles = 0.028

Molarity = \(\frac{Moles}{Volume}\)

Molarity = \(\frac{0.028 moles}{0.03 L}\)

= 0.93 M

Natural gas power plants focus on using non-renewable energy resources.

Found in subterranean layers of rocks and sediments. Pressure and heat worked together to transform plant and animal debris into crude oil also known as petroleum coal, and natural gas. Our energy supply comes primarily from fossil fuels, with nuclear power and renewables rounding out the whole. These sources mainly come from our nearby star the Sun. Electricity falls into its own category because it is an energy medium and not a primary source.

Non-renewable energy resources are limited because they usually take time to replenish. The advantage of these non-renewable resources is that the power plants that use them can produce more electricity on demand. A non-renewable energy resource is a coal. Non-renewable energy is an energy source that will eventually run out. Most non-renewable energy sources are fossil fuels such as coal gas, and oil.

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Answer:natural gas powerplant

Explanation: because

Answer:

I am so sorry if I am wrong but my guess is no precipitate is formed.

Explanation:

If the following ions\(Mg^{+2}\),\(Cl^{-}\), \(Sr^{+2}\), \(OH^{-}\) are placed in a test tube, the precipitate formed is \(Mg(OH)_{2}\)

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Answer:

a and c

Explanation:

im probably wrong  though

Answer: It does not explain why the cranes fly south

It does not show when the cranes arrive at each location

Explanation:

It was on a quiz

Answer:

IUPAC Name:

N-ethyl-N-methylaniline

Common Name:

Benzenamine

The equation  in the question is: H+H → H + H Complete the equation by filling in the missing parts. missing part is  1 → H+H-2 → →3 → He.

The atomic number of hydrogen is 1, which means it has only one proton in the nucleus and one electron in its shell. Two hydrogen atoms react with each other to form helium. Helium has 2 protons and 2 neutrons in its nucleus and two electrons in its shell. Therefore, the equation is:

H + H → HeIt can be seen that:1. H + H (Reactants)

2. → (Yields or Reacts to form)

3. He (Product)Therefore, the tiles will be arranged as shown below: 1 → H+H-2 → →3 → He

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Answer:

Steam distillation is a separation technique that harnesses the low boiling point property of immiscible mixtures.

Steam distillation is a separation technique that harnesses the low boiling point property of immiscible mixtures.it is done by passing dry steam through the plant material whereby the steam volatile compounds are volatilized, condensed and collected in receivers.

Answer:

No

Explanation:

thats scientifically impossible

The complete equation for the precipitation reaction will be:

CuCl₂(aq)+Na₂CO₃(aq)  >  CuCO₃(s)   +  2NaCl(aq)

From the reaction,

CuCl₂(aq)+Na₂CO₃(aq)  are the reactants while CuCO₃(s)   +  NaCl(aq) are the products of the reaction.

In the reactants side there is 1Cu, 2Cl, 2Na and 1CO₃   while in the products side there is  1Cu, 1Cl, 1Na and 1CO₃

To balance both sides, we multiply NaCl by 2 to balance the Na and Cl atoms.

Therefore, the final balanced equation will be          

CuCl₂(aq)+Na₂CO₃(aq)  ----->  CuCO₃(s)   +  2NaCl(aq)

This reaction is balanced, and with the appropriate physical states of the reactants and products.

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If more than one stereoisomer forms, be sure to depict each one with the proper wedges and dashes; the result is cyclopent-1-en-1-ylbenzene.

We have a Wittig reaction in this situation. The "Ylide compound" is created by mixing and n-Buli. The iodide will first be replaced by triphenylphosphine in a Sn2 reaction.

After then, the base n-Buli will eliminate an atom of hydrogen to create a double bond (Ylide compound). The double bond will then undergo delocalization, resulting in a carbanion.

The carbonyl group's carbon will be attacked by this carbanion, creating a negative charge in the oxygen. The phosphorus atom will then be attacked by the negative charge, creating a cyclic structure. In order to create the alkene, the cyclic structure is finally disrupted (cyclopent-1-en-1-ylbenzene).

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Answer:

i dont see it

Explanation:

Answer:

A fractionating column or fractional column is an essential item used in the distillation of liquid mixtures to separate the mixture into its component parts, or fractions, based on the differences in volatilities.

Explanation:

Types of luminous flames:

1. Yellow Luminous Flame

2. Smoky Luminous Flame

3. Orange Luminous Flame

4. Blue Luminous Flame

Luminous flames are characterized by their visible glow, which is caused by the incomplete combustion of fuel. The presence of soot particles in the flame causes the emission of light. There are different types of luminous flames, which can be classified based on their fuel composition and burning conditions. Here are some common types of luminous flames:

1. Yellow Luminous Flame: This is the most common type of luminous flame, often seen in open fires, candles, and gas stoves. It appears yellow due to the presence of soot particles in the flame. Yellow flames indicate incomplete combustion of hydrocarbon fuels, such as methane, propane, or natural gas. The high carbon content in these fuels leads to the formation of soot, which emits visible light.

2. Smoky Luminous Flame: This type of flame is characterized by a significant amount of black smoke and soot production. It is commonly observed in poorly adjusted or malfunctioning burners or engines. The excessive presence of unburned fuel in the flame results in incomplete combustion and the emission of dark smoke particles.

3. Orange Luminous Flame: An orange flame indicates a higher combustion temperature compared to a yellow flame. It is often seen in more efficient burners or when burning fuels with a higher carbon content, such as oil or diesel. The higher temperature helps in burning more of the carbon particles, reducing the amount of soot and making the flame appear less yellow.

4. Blue Luminous Flame: A blue flame is typically associated with complete combustion. It indicates efficient burning of fuel, resulting in minimal soot formation. Blue flames are commonly observed in gas burners or Bunsen burners. The blue color is a result of the combustion of gases, such as methane, in the presence of sufficient oxygen.

It's important to note that the luminosity of a flame can vary depending on factors such as fuel-air mixture, combustion temperature, and the presence of impurities. Achieving complete combustion and minimizing the production of soot is desirable for efficient and cleaner burning processes.

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Answer:

Q = 10.10059 KJ

Explanation:

Given data:

Amount of water = 13.0 g

Initial temperature = 52.5°C

Final temperature = 238.2°C

Heat required to convert it into steam = ?

Solution:

Specific heat capacity of water is 4.184 J/g.°C

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 238.2°C - 52.5°C

ΔT = 185.7 °C

by putting values,

Q = 13.0 g × 4.184 J/g.°C × 185.7 °C

Q = 10100.59 J

Jolue to Kj:

10100.59j × 1 KJ/1000 J

Q = 10.10059 KJ

Answer:

78

Explanation:

You have 100%, you take 22% and get 78%

The mass of silver chloride produced when 2 mole of silver nitrate is reacted with 2 moles of nickel (II) chloride is 286.64g.

Stoichiometry is the study and calculation of quantitative (measurable) relationships of the reactants and products in chemical reactions (chemical equations).

According to this question, 2 moles of silver nitrate is reacted with 2 moles of nickel (II) chloride to produce silver chloride and nickel nitrate.

Based on the balanced equation, 2 moles of silver nitrate produces 2 moles of silver chloride.

Molar mass of silver chloride = 143.32g/mol

mass = 143.32 × 2 = 286.64g

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Answer: 9084355.951 L  if need in correct sig figs answer is

9.08 X 10^6 L

Explanation:

Ideal gas law  PV=nRT  = V=nrt/P

R= 62.44

n=0.511

T= 513

P= 555

V= 0.511 X 62.44 X 513 / 555

Answer:

B

Explanation:

I did the test

Answer:

A

Explanation:

The actual result of the calculation is 101.920. Therefore, none of the options provided in the question matches the correct answer.

To calculate the given expression: (43 × 2.310) + (7 × 0.370), we perform the multiplication first and then add the results.

Multiplying the counted numbers:

43 × 2.310 = 99.330

Multiplying the measured numbers:

7 × 0.370 = 2.590

Now, we add the results:

99.330 + 2.590 = 101.920

The correct answer is not provided in the given options: a) 38.35, b) 38.4, c) 38, or d) 40.

The actual result of the calculation is 101.920. Therefore, none of the options provided in the question matches the correct answer.

It's important to note that when performing calculations, it is crucial to accurately follow the order of operations (multiplication before addition) and ensure precision when dealing with decimal numbers.

In this case, the correct answer is not among the options provided, and the accurate result is 101.920.

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Answer:

\(\boxed {\boxed {\sf 0.757 \ atm}}\)

Explanation:

We are asked to find the pressure of a gas given a change in volume. Since the temperature remains constant, we are only concerned with volume and pressure. We will use Boyle's Law, which states the volume is inversely proportional to the pressure. The formula for this law is:

\(P_1V_1= P_2V_2\)

Initially, the oxygen gas occupies a volume of 18.7 liters at a pressure of 1.19 atmospheres.

\(1.19 \ atm * 18.7 \ L = P_2V_2\)

The gas expands to a volume of 29.4 liters, but the pressure is unknown.

\(1.19 \ atm * 18.7 \ L = P_2 * 29.4 \ L\)

We are solving for the new pressure, so we must isolate the variable \(P_2\). It is being multiplied by 29.4 liters. The inverse operation of multiplication is division. Divide both sides of the equation by 29.4 L.

\(\frac {1.19 \ atm * 18.7 \ L}{29.4 \ L} =\frac{ P_2 * 29.4 \ L}{29.4 \ L}\)

\(\frac {1.19 \ atm * 18.7 \ L}{29.4 \ L} =P_2\)

The units of liters cancel.

\(\frac {1.19 \ atm * 18.7 }{29.4 } =P_2\)

\(\frac {22.253}{29.4 } \ atm = P_2\)

\(0.7569047619 \ atm =P_2\)

The original measurements all have 3 significant figures, so our answer must have the same. For the number we calculated, that is the thousandth place. The 9 in the ten-thousandth place to the right of this place tells us to round the 6 up to a 7.

\(0.757 \ atm \approx P_2\)

The pressure of the gas sample is approximately 0.757 atmospheres.

According to Boyle's law, for a given mass of ideal gas, pressure of gas is inversely proportional to the volume of gas, Provided the Temprature remains constant.

\(\implies \sf P_1 V_1 = P_2 V_2 \\ \)

\(\implies \sf 1.19 \times 18. 7= P_2 \times 29.4 \\\)

\(\implies \sf 22.253= P_2 \times 29.4 \\\)

\(\implies \sf P_2 = \dfrac{22.253}{29.4} \\\)

\(\implies \underline{ \red{\boxed{ \bf P_2 \approx0.756 \: atm }}} \\\)

The oxidation state of nitrogen (N) in NaNO3 is +5. option B

To determine the oxidation state of nitrogen (N) in sodium nitrate (NaNO3), we need to assign oxidation numbers to each element in the compound.

In NaNO3, we know that the sodium ion (Na+) has a +1 oxidation state because it is an alkali metal. Oxygen (O) typically has an oxidation state of -2 in compounds, and there are three oxygen atoms in NaNO3. Since the compound is neutral, the sum of the oxidation states must be zero.

Let's assume that the oxidation state of nitrogen is x. Therefore, we can set up the equation:

(+1) + x + (-2) * 3 = 0

Simplifying the equation:

+1 + x - 6 = 0

x - 5 = 0

x = +5

Therefore, the oxidation state of nitrogen (N) in NaNO3 is +5.

The oxidation state of an element indicates the number of electrons it has gained or lost in a compound. In this case, the nitrogen atom in NaNO3 has gained five electrons to achieve a stable oxidation state of +5.

It is important to note that oxidation states are formal charges and do not necessarily represent the actual distribution of electrons in a compound. They are assigned based on a set of rules and can be useful in understanding the reactivity and behavior of elements in chemical reactions.

Option B

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Answer:

Nuclear Waste

Explanation:

Unwanted radioactive products formed during nuclear reactions are called nuclear waste. Nuclear waste is a byproduct of nuclear power generation, medical procedures, and other activities that involve the use of radioactive materials. It can include spent nuclear fuel, radioactive liquids, and other radioactive materials that are generated during nuclear reactions.

Nuclear waste is highly radioactive and can pose a risk to human health and the environment if it is not properly managed. It must be stored, transported, and disposed of in a way that minimizes the potential for exposure to radiation and contamination.

Fossil fuels, nuclear fuels, and nuclear reactors are not related to the production of nuclear waste. Fossil fuels are non-renewable energy sources such as coal, oil, and natural gas that are formed from the remains of ancient plants and animals. Nuclear fuels are materials such as uranium and plutonium that are used as fuel in nuclear reactions. Nuclear reactors are facilities that use nuclear fuel to produce electricity through nuclear reactions.

Answer:

Both substances undergo substitution reactions.

Explanation:

Let us go back to the idea of aromaticity. Aromatic substances are said to possess (4n + 2) π electrons according to Huckel rule.

Aromatic substances are unusually stable and the aromatic ring can not be destroyed by addition reactions.

Since both benzene and cyclooctatetraene are both aromatic, they do not undergo addition reactions whereby the aromatic ring is destroyed. They both undergo substitution reaction in which the aromatic ring is maintained.

Based on dilution methods, the dilution given is a serial dilution with dilution factor of 1/10.

A serial dilution is the stepwise dilution of a substance in solution usually using a constant dilution factor at each step of dilution.

The above dilution step is a serial dilution.

Therefire, the dilution factor of the dilution above is:

initial volume = 10 mL

final volume = 100 mL

Dilution factor = 10/100

Dilution factor = 1/10

Therefore, the dilution given is a serial dilution with dilution factor of 1/10.

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