Letter C shows that some of the heat rising from the earth's surface is trapped by gases in the atmosphere and reflected back to earth. This is known as what?





Question 3 options:

Coriolis Effect


Solar Flares


Green House Effect


Windshield Effect

Answer:

using one or more of your senses is Observing

Answer:

[tex]1m ^ {3}[/tex]

Explanation:

UwU

Answer:

First make sure the both weights have the same units.

Take your experimental yield and divide it by the theoretical yield.

Multiply this value by 100 to find the percent yield.

Explanation:

For the Average. Add up the two percent yields that you found and divide by 2.

Answer:

6

Explanation:

The age of the charcoal sample in the campfire in use is equal to the time taken for the decay of 0.22 of C-14 to 0.055 Bq. Hence its age is 11552.45 years.

Unstable radioactive isotopes of atoms undergo nuclear decay by the emission of charged particles such alpha or beta particles. Radioactive decay is a first order reaction. Thus, the decay constant is written as:

k = 1/t ln (W0 / Wt)

where W0 be the initial weight and Wt be the weight after time t.

The decay constant is related to the half life time of the sample by the expression:

k = 0.693 / t1/2.

Given that t1/2 of C-14 = 5730 years.

Thus, k = 0.693 /5730 = 0.00012 yr⁻¹.

Now, we can calculate the time t using the first order equation.

t = 1/k ln ln (W0 / Wt)

= [ ln (0.22 Bq/  0.055 Bq) ] / 0.00012 yr⁻¹

= 11552.4 years.

Therefore, the age of the sample of charcoal is 11552.4 years.

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Two limitations of the student's models are that the models do not explain why the phenomenon occurs and the models only record the phenomenon in a limited way

Understanding a specific phenomenon requires gathering and analyzing data thoroughly because the researcher needs to collect data that is directly related to the phenomenon and this data needs to be complete and accurate to have reliable conclusions.

In this situation, the student created some models of the routes of the sandhill crane's migration. This data has two main limitations:

Based on this, two limitations of the models are that they do not explain the phenomenon and the data is not complete.

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Answer:

A. A bond that forms when electrons are transferred from one atom to another

[tex].[/tex]

Answer:

A. A bond that forms when electrons are transferred from one atom to another

Answer:

5 significant figures.

Explanation:

The decimal place makes the zeros significant.

Answer:

Limiting reactant= SO₂, Theoretical yield = 9.6g SO₃

Explanation:

The first step is is to find the limiting reactant; you do this using stoichiometry.

The reactant that produces the smallest amount of sulfur trioxide SO₃, is the limiting reactant.

In this problem, SO₂ is the limiting reactant.

Now to find the theoretical yield we will use the smallest value of SO₃.

I have uploaded a picture to better illustrate the problem and hope it helps.

Answer:

homogenous

Explanation:

its a pure element, so it is a pure substance

Answer:

c

Explanation:

because your separating the atoms in the water

The appropriate model for nuclear fission is disturbing a drop of water such that it breaks into smaller droplets.

Nuclear fission refers to the disintegration of a large nucleus when it is bombarded with a small particle.

Usually, the protons in the nucleus repel each other strongly. Hence, as the atomic number of atoms continues to increase, this repulsion exceeds the nuclear attractive force causing the atom to disintegrate into smaller fragments called daughter nuclei when disturbed just as a drop of water such that it breaks into smaller droplets  when disturbed.

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Answer:

A: Train I had the fastest average speed

C: Trains II and V had the same average speed

E: Trains III and IV had the same average speed

Explanation:

Answer:

that element is likely to be a non metaland a gas

Answer:

Cesium atomic number 55

The half life time period of decaying 96 atom sample to 3 atoms of Fermium-253 if it has a half-life of 0.334 seconds is 1.67 s.

Half life time period is defined as the time interval which is required to decay the substance into half of its concentration. It is denoted by t(1/2).

As, atom decay in first half life time = 48 atoms.

Atom decay in second half life time = 24 atoms.

Atom decay in third half life time = 12 atoms.

Atom decay in fourth half life time = 6 atoms.

Atom decay in fifth half life time = 3 atoms.

So, we can see that in 5 half life time 96 atoms decay into 3 atoms.

So, time interval require to decay 96 atoms into 3 atoms is 5 × 0.334 = 1.67 s.

Thus, we concluded that the half life time period of decaying 96 atom sample to 3 atoms of Fermium-253 if it has a half-life of 0.334 seconds is 1.67 s.

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Answer:

N2 + O2 ------------->2NO(Balanced Reaction)

A balanced chemical equation for the standard formation reaction of gaseous nitrogen monoxide (NO) -

1/2 [tex]N_{2}[/tex] (g)   + 1/2 [tex]O_2[/tex] (g)   -----------------> NO (g)

Synthesis or formation reactions involve the combination of two or more substances that will react. There is only one product of a synthesis reaction.

1/2 [tex]N_{2}[/tex] (g)   + 1/2 [tex]O_2[/tex] (g)   -----------------> NO (g)

Thus, A balanced chemical equation for the standard formation reaction of gaseous nitrogen monoxide (NO) -

1/2 [tex]N_{2}[/tex] (g)   + 1/2 [tex]O_2[/tex] (g)   -----------------> NO (g)

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Answer:

a because it help in protecting disease

Answer:

c

Explanation:

because u need the energy to be able to work

Given the flow rate and the amount of nitroglycerine contained in the IV bag, the patient should receive 63 milliliters per hours.

Rate of prescribed dose by IV: [tex]2.10*10^2 ug/min = 210ug/min[/tex]

Available: [tex]50mg nitroglycerine = 50000ug[/tex]

Available Volume: [tex]150mL[/tex]

Hence, [tex]50000ug = 250ml[/tex]

and volume for [tex]210ug = x[/tex]

We cross multiply to find x

[tex]x = \frac{210ug * 250mL}{50000ug} \\\\x = 1.05mL[/tex]

Meaning that in a single minute, 1.05mL is been infused into the patient

Now, for an hour, ( 60 minutes ) the volume infused will be;

[tex]1min = 1.05mL[/tex]

[tex]60min = x[/tex]

We cross multiply to find x

[tex]x = \frac{1.05mL*60min}{1min}\\\\x = 63mL[/tex]

Therefore, given the flow rate and the amount of nitroglycerine contained in the IV bag, the patient should receive 63 milliliters per hours.

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The amount of table salt (in grams) contains this quantity of sodium is 5.844 g.

Table salt is made up of sodium and chloride. The chemical formula of table salt is NaCl. This is a common salt used daily in the kitchen. This gives us a taste of food. And it is also necessary for the body.

The RDI for sodium for adults is given that is 2300 mg. The quantity of sodium is given = 2300 mg = 2.30 g (since the answer is asked in grams)

As we know, table salt is NaCl.

The molar mass of table salt (NaCl) is 58.44 g/mol

The molar mass of sodium (Na) is 23.00 g/mol

So, for 23.00 g sodium, we need 58.44 g NaCl.

And, for 2.30 g sodium we require (58.44 g x 2.3 g) / 23 g = 5.844 g = 6 g (to one significant figure).

Therefore, the amount of sodium is present in 5.844 grams of table salt.

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Answer:3.4 - 5.6

Explanation:

Answer:

im sorry the answer if i did i would

Explanation:

To identify the gas produced in a chemical reaction without observing the atoms and molecules directly through the characteristics of the gas.

Chemical reaction is defined as the process by which substances (known as reactants) combine together with the formation of bonds to form products.

There are some signs that shows that chemical reaction has occurred. They include:

Therefore, the production of gas from a chemical reaction shows that a reaction has occurred.

These gases can be identified without observing the molecules through that characteristics of the gas. This include:

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Answer:The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another. This means that a system always has the same amount of energy, unless it's added from the outside. ... The only way to use energy is to transform energy from one form to another.

Answer:

law of conservation of energy is energy cannot be created or destroyed but can be transformed from one form to another

it is true as potential energy can be converted into kinetic energy

Answer:

if you subtract 88 from 226 you get 138

so uour answer would be C.

Answer:

138

the conversion of an atom of one element into a different element through nuclear changes

A nuclear equation is balanced according to mass number. A chemical equation is balanced according to the total mass before and after the change

82

Some of the matter is converted to energy

Explanation:

I've used this website enough I think its time for me to give back.

Answer:

111Cd 12.80% stable

Explanation:

Maybe?

Answer:

5: tomato and vinegar

6: air

The Earth can be divided into one of two ways – mechanically or chemically. Mechanically – or rheological, meaning the study of liquid states – it can be divided into the lithosphere, asthenosphere, mesospheric mantle, outer core, and the inner core.

Explanation: