Answer:
strength is the correct answer
. What is global warming? What can people do to reduce global warming?
Answer:
definition- the long-term heating of Earth's climate system observed since the pre-industrial period (between 1850 and 1900) due to human activities, primarily fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth's atmosphere.
Power your home with renewable energy, Invest in energy-efficient appliances, and Reduce water waste etc.
Answer:
Global warming is an effect on Earth, caused when too much carbon dioxide is present in the air. Carbon dioxide is a green house gas and partially restricts radiation from going back to into space, preventing the Earth from becoming too cold.
However, too much carbon dioxide has the effect of warming the Earth more than normal as it traps more heat on Earth. Thus, the greenhouse effect is enhanced- in short, global warming means that the Earth is much more warmer than normal.
The temperature on Earth has increased by 0.5 °C in the last 100 years. Although this doesn't seem like much, but a small increase can cause a big change. Global warming causes ice sheets to melt and causes sea levels to rise. Due to this, costal flooding frequently happens. In drier seasons, the heat is also more intense becuase of global warming.
Global warming can be reduced by burning less fossil fuels and using solar and wind power instead. Using more public transport could also help reduce carbon dioxide present in the atmosphere, as less vehicles will be releasing carbon dioxide. Reducing the amount of deforestation will greatly help reduce global warming, because trees absorb carbon dioxide from the atmosphere, and through the process of carbon dioxide, they change it into oxygen.
Draw and name all six (6) of the possible monochloro derivatives when methylcyclopropane is exposed to chlorine and light. Show all stereoisomers including diastereomers and enantiomers. Indicate all relative and absolute stereochemical relationships in the structure. Name each compound. All answers should have the formula C4H7Cl.
Answer:
Attached below
Explanation:
Attached below is the required diagrams
From the attached diagram ; Compounds 1 and 2 are achiral ( i.e. stereoisomers aren't possible here )
Compound 3 : ( 1S, 2R ) - 1 - chloro-2-methylcyclopropane
Compound 4: ( 1R , 2S ) - 1- chloro-2-methylcyclopropane
Compound 5: ( 1R, 2R ) - 1 - chloro-2-methylcyclopropane
Compound 6: ( 1S, 2S ) -1- chloro-2- methyl cyclopropane
The balmer thermometer uses the atomic transitions of what element to measure the temperature of stars?
A. Helium
B. Gamma rays
C. Hydrogen
D. Nitrogen
E. Water
Help plz:)))I’ll mark u Brainliest
Answer:
[tex]\Delta _{fus}H=205J/g=13.03kJ/mol[/tex]
Explanation:
Hello there!
In this case, since the heat of fusion is a property that allows us to calculate the heat involved during the change from solid to liquid (fusion) and is calculated as shown below:
[tex]Q=m*\Delta _{fus}H[/tex]
In such a way, given the heat involved during this process and the mass of copper, we calculate the heat of fusion as shown below:
[tex]\Delta _{fus}H=\frac{Q}{m}=\frac{41000J}{200.g}\\\\\Delta _{fus}H=205J/g[/tex]
Or in kJ/mol:
[tex]\Delta _{fus}H=205\frac{J}{gCu}*\frac{63.546 gCu}{1molCu}\\\\ \Delta _{fus}H=13026.93J/mol=13.03kJ/mol[/tex]
Regards!
Which of the following must have a host to replicate
A)bacteria
B)virus
C)Protozoa
D)fungi
Answer:
Virus
Explanation:
Hope this helped :)
How many sulphur atoms are there in 0.125 moles of sulphur
Explanation:
There are 6.022x1023 molecules in 1 mole of SO3 (Avogadro's number) so in 0.25 moles, there are (0.25)(6.022x1023) molecules in the 0.25 moles of SO3. or 1.506x1023 molecules per 0.25 moles of SO3.
There is one atom of sulfur in each molecule of SO3. So there are 1.506x1023 atoms of sulfur in 0.25 moles of SO3.
According to the concept of Avogadro's number there are 0.7525 ×10²³ atoms of sulfur in 0.125 moles of sulfur.
What is Avogadro's number?Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.
It has a SI unit of reciprocal mole whose numeric value is expressed in reciprocal mole which is a dimensionless number and is called as Avogadro's constant.It relates the volume of a substance with it's average volume occupied by one of it's particles .
According to the definitions, Avogadro's number depend on determined value of mass of one atom of those elements.It bridges the gap between macroscopic and microscopic world by relating amount of substance with number of particles.
Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number
In the given example, number of atoms of sulfur are calculated as, Avogadro's number×number of moles, that is,6.022×10²³ ×0.125=0.75275×10²³ atoms
Therefore, there are 0.75275×10²³ atoms in 0.125 moles of sulfur.
Learn more about Avogadro's number,here:
https://brainly.com/question/11907018
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Write 6.3 x 10^2 in standard form.
O 0.063
O 630
O 63
O 63
Answer:
it will be 630
Explanation:
An experimental measurement was taken of 10.4mL and the actual measurement was 9.7mL. What is the percent error?
Answer:
13%
Explanation:
HOW MANY ELEMENTS ARE IN 3FE(OH)3
Answer:
Three
Explanation:
Iron
Oxygen
Hydrogen
An object becomes positively charged when it loses electrons. O loses protons. O gains electrons. O gains neutrons.
an object becomes positively charged when it LOSES ELECTRONS.
* protons are positive, so losing protons means that it would be negatively charged.
* gaining electrons would make it more negatively charged.
* gaining neutrons changes nothing because neutrons are neutral.
A sample of carbon monoxide at 57 degrees Celsius and under 0.75 atm occupies 85.3 liters of space. What mass of carbon monoxide is present in the sample?
what does it mean to count atoms
When you count atoms, remember to multiply the coefficient number and the subscript number to find the number of atoms of that element. Examples: ▪ 2H2O. Number of atoms Number of molecules = 2. H-4.
A certain mass of water was heated with 41,840 Joules, raising its temperature from 22.0°C to 28.5 °C. Find the
mass of the water.
Answer:
1.5 × 10³ g
Explanation:
Step 1: Given and required data
Transferred heat (Q): 41,840 JInitial temperature: 22.0 °CFinal temperature: 28.5 °CSpecific heat capacity of water (c): 4.184 J/g.°CStep 2: Calculate the temperature change
ΔT = 28.5°C - 22.0 °C = 6.5 °C
Step 3: Calculate the mass (m) of water
We will use the following expression.
Q = c × m × ΔT
m = Q / c × ΔT
m = 41,840 J / (4.184 J/g.°C) × 6.5 °C = 1.5 × 10³ g
What do you think happens to the atoms of a substance when it burns?
Claim 1: All of the atoms are destroyed.
Claim 1: All of the atoms are destroyed.
Claim 2: All of the atoms rearrange to form a different substance or different substances.
Claim 2: All of the atoms rearrange to form a different substance or different substances.
Claim 3: Some of the atoms are destroyed, and some of the atoms rearrange to form a different substance or different substances.
Explain why you chose your answer.
Answer:Its claim 2
Explanation:claim 1 says All of the atoms are destroyed but atoms cant be destroyed.Claim 3 might seem correct but is not.
How many grams of oxygen are required to burn 3.01 x 10^23 propane molecules?
Which type of molecule is shown below?
O A. Alkene
O B. Cyclic alkane
O C. Alkane
O D. Alkyne
Answer:
A. Alkene
Explanation:
Alkenes are a class of hydrocarbons characterized by the possession of a carbon to carbon double bond (=) in their structure. This means that C=C is the functional group of alkenes. Alkenes have the general formula; CnH2n.
Based on the structure in the attached image, the structure can be identified to be an ALKENE because it possess a C=C functional group. Specifically, the IUPAC name of the structure is 1,2- dimethyl ethene.
How are tadpoles and larvae similar
A: They both fly.
B: They both develop antennae.
C: They both eat and grow a lot.
D: They are both fully grown adults
Answer:
C. they both eat and grow a lot, i hope it helps
1. The half-life of Co-60 is 5.3 years. If the initial mass of the sample is 1000g, how much will remain after 15.9 years.
Answer:
125 g
Explanation:
The following data were obtained from the question:
Half-life (t½) = 5.3 years.
Original amount (N₀) = 1000 g
Time (t) = 15.9 years.
Amount remaining (N) =?
Next, we shall determine the number of half-lives that has elapsed. This can be obtained as follow:
Half-life (t½) = 5.3 years.
Time (t) = 15.9 years.
Number of half-lives (n) =?
n = t / t½
n = 15.9 / 5.3
n = 3
Thus, 3 half-lives has elapsed.
Finally, we shall determine the amount of Co–60 that is remaining. This can be obtained as follow:
Original amount (N₀) = 1000 g
Number of half-lives (n) = 3
Amount remaining (N) =?
N = 1/2ⁿ × N₀
N = 1/2³ × 1000
N = 1/8 × 1000
N = 0.125 × 1000
N = 125 g
Therefore, the amount of Co–60 that is remaining is 125 g
Please try solving this question :)
Alcohol rather than water is used in a thermometer.
What property of alcohol makes it suitable to be used in
the thermometer?
Answer:
Ethanol
Explanation:
Answer:
Alcohol remains liquid at lower temperatures, but also vaporizes at lower temperatures (compared to water), so it is suitable for thermometers that operate over a lower temperature range, such as outdoor thermometers.
Explanation:
Hope it helps to you :) <3<3
How many moles of chlorine are in 100g Chlorine (CI^2)?
A) 64.6
B) 100
C) 1.41
D) 0.355
Answer:
35.453 good luck with your work
A knife is a example of a pulley True or false
Answer:
In my Opinion
Explanation:
False. There's no pulley system or activity in a knife.
how many molecules in 400g of acetic acid
Answer:chemical formula of acetic acid is or
so, molecular mass of acetic acid = 2 × atomic mass of C + 4 × atomic mass of H + 2 × atomic mass of O
= 2 × 12 + 4 × 1 + 2 × 16
= 24 + 4 + 32
= 60g/mol
given mass of acetic acid = 22g
so, no of moles of acetic acid = given mass/molecular mass
= 22/60 ≈ 0.367
so, number of moles of acetic acid is 0.367mol
number of molecules in 0.367 mol of acetic acid = 6.022 × 10²³ × 0.367
= 2.21 × 10²³
Explanation:
A neutralization reaction is taking place between solutions of phosphoric acid and calcium
hydroxide. For each mole of calcium phosphate produced by this reaction, how many moles
of water are produced?
a. 2
c. 4
b. 3
d. 6
Answer:
A
Explanation:
hope this help sweetie <$
How can heat energy transform from mechanical energy?
A)Burning
B)Friction
C)Light
D)Flames
Answer:
A
Explanation:
brainliest pls
Identify the type of reaction?
C6H12 + 9 O2 —> 6 CO2 + 6 H2O
Answer: 5) combustion is the answer.
Explanation: Combustion is reaction with oxygen.
Fu/kushima Daiichi nuclear disaster (Research)
1. When and where did this accident happen?
2. Describe the incident and cause.
3. Who was responsible?
4. How many people were injured or died? (short term and long term)
5. How could the accident have been prevented?
6. What chemicals were involved?
7. What are the chemicals physical and chemical properties? (refer to their safety data sheets)
8. What are the chemicals uses, what products are they used in?
9. What health problems did the accident cause?
10. Relate details from the accident to chemistry topics we have covered so far
11. Compare and contrast the safety protocols used at the time of the accident to current safety practices for the same chemical.
Answer:
I don't know
Explanation:
give me you research
what is the mass spectrom
Answer:
Here's your Answer
Explanation:
the mass spectrum is the graphical representation of the ion abundance versus the mass to charge of the ions separated in mass spectrometer
A Container with 8.0 mol of gas at a pressure of 2.0 atm has a volume of 7.00 L.
What is the temperature of the gas?
The temperature of the gas is (value1] K.
Answer:
dryhnjkftglqawghbnjsdfmkpohbgfddfvgb
Explanation:
There are four stages to the classical demographic transition model Pre-transitional Europe was characterized by high and
fluctuating mortality and a high birth rate. The transition model began to progress into and through stage 2 in the late 18th and early
19th century. All BUT ONE contributed to the decline in mortality.
S- -1]))
A)
Enacting measures to provide clean water supplies.
B)
Public health advances including quarantine of settlements undergoing
epidemics
The development of vaccines to prevent disease and antibiotics to treat
infection.
D)
Widespread acceptance of germ theory resulting in more hygienic
practices, including hand washing and sterilizing medical equipment and
infants' bottles.
Which one is a transferable type of energy?
A. Potential
B. Heat
C. Internal
D. Stored energy
E. Kinetic
Answer:
E. Kinetic
Explanation:
Kinetic Energy. Energy is transferred from one object to another when a reaction takes place. Energy comes in many forms and can be transferred from one object to another as heat, light, or motion, to name a few. For the blue ball to move to the position of the green ball, energy must be given to the blue ball.
Brainlyest please