Chemistry High School

Comparison between availability of food & population in current scenario.
In UAE.
(10-marks)

100-200 words please

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Answer 1

Answer:

Answer is in the attachment

hope it's helpful

Comparison Between Availability Of Food & Population In Current Scenario.In UAE.(10-marks)100-200

Related Questions

please answer quick...................

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Answer:

3). C

Explanation:

When inter-nuclear distance [ atomic radius ] is smaller, the nuclear attraction has a greater magnitude.

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Aqueous lead (II) nitrate, Pb(NO3)2 undergoes a double displacement reaction with aqueous sodium chloride, NaCl, in which a precipitate forms. If the precipitate contains lead, write the balanced chemical equation for this reaction. Be sure to include the states of each of the reactants and products

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Answer:

[tex]{ \sf{Pb(NO_{3})_{2(aq)} + 2NaCl _{(aq)} → 2NaNO_{3(aq)} + PbCl _{2(s)} }} \\ [/tex]

why did scientists accepted dalton's atomic theory but not the idea of an atom proposed by the greek philosophers?

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Answer:

Because.in theory, it's impossible for philosophers (Greeks) don't have the proper equipment and also they don't have enough facts to back it up

Explanation:

Hope this helps

Why are intensive properties useful for identifying a substance?

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Intensive properties could be used to help identify a sample because certain characteristics do not depend on the amount of sample, but they also don’t change according to conditions

Write a word equation for the chemical reaction.

I’ll brainlist.

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Answer:

potassium hydroxide + sulfuric acid → potassium sulfate + water.

Explanation:

Hope it helps.. if yes, plz mark me as brainliest

A statement that describes what scientists expect to happen every time under a given set of conditions is call a scientific

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Answer:

law

Explanation:

it is called a scientific law

• 2. Using the following formula Force (N) = mass (kg) * acceleration (m/s").
What is the force of a ball with a mass of 5kg fallinly to the ground at
10m/s.

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Answer

50 N

Explanation

Someone plz help me giving brainliest m

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Answer:

C

Explanation:

it would be the best action because questions are important when looking at designs/creating them.

Pls help with these two questions~-~

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The answer is geometry and geography you add math subtract read and follow instructions

pls answer this question
9 qn is bio i think
pls

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Answer:

7. A. properties that differ from both iron and oxygen

8. D. cool the rod and heat the cylinder

9. B. sea level to a mountain top

briefly explain how to separate a mixture of water, kerosene, sawdust and nahso4? ​

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Answer:

Use filtration method lol.

Please help me with this chemistry

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Answer:

platinum is the correct answer

Answer:

it would be made of platinum

Explanation:

An element has an atomic number of 16. An ion of this element has a 2-charge. How was the ion formed?

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Answer: The answer is ‘a neutral atom gained 2 electrons’

Explanation: Because electrons are negatively charged and adding 2 extra would make the ion negatively charged by 2

Answer:

The answer to all the quiz questions are

Explanation:

1. Which statement describes the number of protons in each atom of an element?

*The number of protons is given by the atomic number, which increases by one moving from left to right across each row of the periodic table.*

2. An element has an atomic number of 16. An ion of this element has a 2– charge. How was the ion formed?

*A neutral atom gained 2 electrons.*

3. Rubidium has an atomic number of 37 and a mass number of 85. How many protons, neutrons, and electrons does an ion of rubidium with a 1+ charge have?

*37 protons, 48 neutrons, and 36 electrons*

4. There are three stable forms of neon: neon-20, neon-21, and neon-22. Which statement is true?

*Their atomic masses differ.*

5. Beryllium has an atomic number of 4. How many neutrons does the isotope beryllium-9 have?

*5*

What are some possible molecules that could have the empirical formula, XY2Z?

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Answer: a

Explanation:

i took the test

H2O, OH

H2O, HCN

CN, OH

CN–, H2O

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Answer:

The choose 2. H2O , HCN

I hope I helped you^_^

What would the car weigh on Earth with a gravitational pull of 9.8 N/kg?

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Answer:

Explanation:s the gravitational field strength on Earth's 9.8 N kg?

The gravitational field strength of the Earth is 10 N/kg (10 newtons per kilogram).

I need help with this question​

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Answer:

ok ok ok okbokvjhkeokkd

32.5 g to fluid ounces

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It’s 4160 fluid ounces

Someone plz help me :(

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Answer:

Descriptive investigations use careful observations and measurements to develop findings. Science journals, science logs, and field notebooks are some of the tools scientists use to gather information for descriptive investigations.

Explanation:

What is the difference between luminous objects and non luminous objects ​

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Answer:

Objects that can emit light energy by themselves are known as luminous objects. Objects that cannot emit light energy by themselves are known as non-luminous objects.

Explanation:

Explanation:

Luminous objects:- The objects that can emit light energy by themselves are known as luminous objects.

Objects like the sun that give out or emit light of their own are luminous objects.

Other examples of luminous bodies are Electric bulb, torch etc.

Non-luminous objects:- the objects that can not emit light energy by themselves are known as Non- luminous objects.

Objects like the moon that do not give out or emit light of their own are Non- luminous objects.

Moon is an example of a non-luminous object as we can see the moon because it reflects light from the sun.

Other examples of Non luminous bodies are pen, pencil, chair, wood etc.

Luminosity – It is defined as the luminous intensity in a particular direction; or we can say it is the apparent brightness of an image.

The brightness of a star is defined as the total energy radiated in unit time. It is related to the surface area (A) and the effective temperature (TT) ( the temperature of a black body having the same radius as the star and radiating the same amount of energy per unit area in one second ) by a form of Stefan’s law, here is given by

⇒L=AσT4⇒L=AσT4

where 

σ is the Stefan’s constant and L is the luminosity.

Note:

The laptop screen, mobile screen you are looking at right now is luminous but the page of your book is a non-luminous object, which is why you need a light on to read it.

can someone answer this

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Answer:

[tex]{ \underline{ \sf{solubility}}}[/tex]

What common group name is carbon in on the periodic table?

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Answer: it's group 14

Explanation:

The common group name for carbon is Group 14 (IVa) on the periodic table.

Nitrogen is inactive gas, why?​

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because it doesn't react easily with other elements it requires high heat and other things

Solid solid soluton example​

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Explanation:

rice and rice coatssalt and sugarsand and mudwheat flour and corn flour

where did they start water conservation in tamil nadu . short answer

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Explanation:

The 2019 water crisis in Chennai has made us realize the importance of saving water more than ever. Water, as we all know, is a finite resource without which our planet would be a barren wasteland. Today with our increasing population it would be logical to say that our water consumption has also increased. And with increasing demand and lesser supply, water scarcity arises. Our ancestors who had foreseen the potential dangers of water scarcity had developed methods to conserve water that was suited for the varied terrain of the Tamil-speaking kingdoms.

Traditional Rainwater Conservation methods of Tamil Nadu

Eri

There are no perennial rivers in Tamil Nadu except the Thamirabharani River which flows through Thirunelveli district. And so, several hundred years ago a simple system was devised to utilize the rainwater to the fullest. An Eri or tank system is one of the oldest forms of water conservation systems in India. Many Eris are still in use in Tamil Nadu and play an active role in irrigation. They act as water reservoirs and flood control systems. They prevent soil erosion, recharge groundwater, and prevent wastage of runoff water during heavy rainfall.

Kudimaramathu

Kudimaramathu is one of the old traditional practice of stakeholders participating in the maintenance and management of irrigation systems. During earlier days, citizens of a village used to actively participate in maintaining the water bodies of their village by deepening and widening the lakes and ponds and restoring the water bodies back to their original form. The silt, rich in nutrients, collected in the process would be used by the farmers themselves in their field. A sense of collective ownership ensured the continued survival of the water bodies.

what amount (in moles) is present in 2.0g of sodium hydroxide,NaOH

Answers

Answer:  0.050 moles of NaOH

Explanation:  The molar mass of NaOH is 40.0g/mole

2.0g/40.0g/mole  =  0.050 moles (2 sig fig)

Starches and sugars being broken down during energy production

a
Chemical Change
b
Physical Change

Answers

Answer:

A. Chemical Change

Explanation:

When starches and sugars are being broken down during energy production it represents chemical change.

[tex]\tt{ \green{P} \orange{s} \red{y} \blue{x} \pink{c} \purple{h} \green{i} e}[/tex]

In your conversion from Milli- to Centi- units, would you move the decimal point to the left or the right?

Answers

Answer:

one unit to the left

Explanation:

cm are 10 times mm, so to convert you have to divide by ten

Examples

100 mm = 10,0 cm

0.50 mm = 0.05 cm

What is the equation to determine the volume of a solid cube?
O V = (7/4)*R^2 *h
O V=|| wh
O V = (4/3)*7*R^3
O V = m*d^2

Answers

Answer:

volume = l x h x w

this is just like your cylinder question. none of the answers represent the equation. sorry

Density and Years: What do you know?Objectives: determine and compare density of pennies to assess composition. Procedure:1. Read the directions and create a data table accordingly.2. Place 15-20 pennies in order of consecutive dates. Find the mass of each penny and record.3. Find the volume of all 5 pennies by water displacement and record in your data table. Record the volume adding 5 more pennies at a time until you have measured them all (15-20).a. Find the average volume of 1 penny.4. Calculate the density of each penny and graph according to the year.5. If the density of copper is 8.96 g/cm3 what would the mass of a pure copper penny be?6. Draw a conclusion.7. How might this relate to a real world example?

Answers

Answer:I dunno

Explanation:it is the best thing I ever said in this app

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