Which of the following statements are true of indirect disease-causing factors? Check all that apply.

Indirect causes of disease include genetics, lifestyle, and environmental factors.

Indirect causes of disease are always passed down from parents.

Indirect causes of disease can trigger genes, leading to types of cancer.

Indirect causes of disease include infections and pathogens

Answers

Answer 1

Answer:indirect causes of disease include genetics, lifestyle, and environmental factors

Explanation:

Answer 2

The indirect disease -causing factors include some genetic factors, infections from other persons etc. Thus options A ,C and D are correct.

What are indirect disease -causing factors?

There are some factors such as infection from other people make us infected also not by directly originating in ourselves. For example, passive smokers may have respiratory disorders.

Some disease can be generated indirectly from the gene types inherited from parents. These may cause imperfect gene coding and some times trigger cancer.

Infections such as flu, cold, different types of fevers, viral and bacterial infection are able to spread and might affect other two-three people.

Therefore, indirect disease -causing factors includes genetic disorders inherited from parents and infections from environment and hence options A, C and D are correct options.

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Related Questions


CH(4)+ 20(2)→ CO2+ 2H(2)O

22.
The reaction shown above is an example of a -

a. synthesis reaction
b. combustion reaction
c. decomposition reaction
d. double displacement reaction

Answers

Answer:

Reaction is a Combustion reaction

A student heats a 2.5 g sample of calcium carbonate in a test tube. What mass of calcium oxide remains in the test tube when the reaction is complete?
CaCO3(s) = CaO(s) + CO2(g)

Select one:
a. 1.4 g CaO
b. 2.1 g CaO
c. 2.5 g CaO
d. 1.0 g CaO

Answers

Answer:

1.4 g CaO

Explanation:

Given data:

Mass of calcium carbonate = 2.5 g

Mass of Cao remain in tube = ?

Solution:

Chemical equation:

CaCO₃    →     CaO + CO₂

Number of moles of CaO:

Number of moles = mass/molar mass

Number of moles = 2.5 g/ 100 g/mol

Number of moles = 0.025 mol

now we will compare the moles of CaO with CaCO₃.

                    CaCO₃        :          CaO

                        1              :             1

                    0.025         :         0.025

Mass of CaO:

Mass = number of moles × molar mass

Mass = 0.025 mol × 56 g/mol

Mass = 1.4 g

Answer:

1.4g CaO

Explanation:

Did the exam and got it right. Hope this helps

Two substances in a mixture differ in density and particle size. theses properties can be used to

Answers

Answer:

option 1. Two substances in a mixture differ in density and particle size. These properties can be used to separate the substances. These properties can be manipulated in order to have a better separation between the two substances.

Explanation:

Answer:

Two substances in a mixture differ in density and particle size. These properties can be used to separate both of them using the separating funnel or using filtration (filter paper).

Explanation:

Since their densities are different, one substance should float above the other in the mixture which allows for the separating funnel to let the substance sinking below (with the heavier density) to flow out first before changing the beaker to let the lighter substance flow out.

The substance with a bigger particle size would not be able to pass through the filter paper unlike the substance with the smaller particle size as the filter paper's pores is not big enough for it to pass through, separating both substances (with one on the paper and the other outside the filter paper, preferably in the beaker placed below the paper).

___SeCl6+ ____ O2——> ___ seO2 +___Cl2

If you can do this I need help with more

Answers

Answer:

SeCl6 + O2——> seO2 + 3Cl2

Whic statements explain why rocks weather at different rates? Check all that apply

Answers

Explanation:

Weathering occurs one of three ways: through physical processes such as freezing and thawing, because of live organisms whose roots break rocks or through chemical processes that occur when carbon dioxide in the soil and air and mixes with water and specific minerals in rocks to form a weak acid that reduces rocks into silt, soil and sediment.

Chemical weathering typically increases as temperatures rise and rain falls, which means rocks in hot and wet climates experience faster rates of chemical weathering than do rocks in cold, dry climates.

Read all above and you may just find your answer!

How many atoms are in a 0.50 g sample of helium

Answers

0.5 G is your answer for this question

What math is used to find density?

Answers

Answer:

[tex]\huge\mathtt{{\colorbox{silver}{ANSWER~~~↴}}}[/tex]

Density is the mass of an object divided by its volume. Density often has units of grams per cubic centimeter (g/cm3). Remember, grams is a mass and cubic centimeters is a volume (the same volume as 1 milliliter).

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Is honors high school chemistry hard? Is it hard mathematically? please answer ASAP i have to put in my courses for next year.

Answers

Explanation:

yes its hard if you don't pay attention.

Yes, the math is harder but chemistry is not it's really fun the math does get harder tho.

What is the relationship between Force and Velocity?
Affect/Effect
Cause/Blame
Claim/Reasoning
Cause/Effect

Answers

Answer:

Cause/ effect relationship.

Explanation:

because the force is the cause of energy that is present and velocity is the effect (speed) that is present.

3. What is the energy of a photon whose frequency is 5.2 x 1015 Hz? Use the equation: E = hxv
h= 6.626 10-34 J xs
4. What is the frequency of radiation whose wavelength is 2.40 x 105 cm? v=c+X
C= 3 x 108m/s

Answers

Answer:

3. 3.45×10¯¹⁸ J.

4. 1.25×10¹⁵ Hz.

Explanation:

3. Determination of the energy of the photon.

Frequency (v) = 5.2×10¹⁵ Hz

Planck's constant (h) = 6.626×10¯³⁴ Js

Energy (E) =?

The energy of the photon can be obtained by using the following formula:

E = hv

E = 6.626×10¯³⁴ × 5.2×10¹⁵

E = 3.45×10¯¹⁸ J

Thus, the energy of the photon is 3.45×10¯¹⁸ J

4. Determination of the frequency of the radiation.

Wavelength (λ) = 2.4×10¯⁵ cm

Velocity (c) = 3×10⁸ m/s

Frequency (v) =?

Next, we shall convert 2.4×10¯⁵ cm to metre (m). This can be obtained as follow:

100 cm = 1 m

Therefore,

2.4×10¯⁵ cm = 2.4×10¯⁵ cm × 1 m /100 cm

2.4×10¯⁵ cm = 2.4×10¯⁷ m

Thus, 2.4×10¯⁵ cm is equivalent to 2.4×10¯⁷ m

Finally, we shall determine the frequency of the radiation by using the following formula as illustrated below:

Wavelength (λ) = 2.4×10¯⁷ m

Velocity (c) = 3×10⁸ m/s

Frequency (v) =?

v = c / λ

v = 3×10⁸ / 2.4×10¯⁷

v = 1.25×10¹⁵ Hz

Thus, the frequency of the radiation is 1.25×10¹⁵ Hz.

Which of the following is NOT n intensive property?

A. Magnetism
B. Boiling point
C. Thermal conductivity
D. Volume

Answers

The answer is D Volume. Volume is an extensive property.

Aluminum nitrate reacts with sodium hydroxide to form a precipitate of aluminum hydroxide. What mass of aluminum hydroxide will precipitate when 35.5 mL of 0.145 mol/L aqueous aluminum nitrate is mixed with 44.2 mL of 0.215 mol/L aqueous sodium hydroxide?

Answers

Answer:

The mass of aluminum hydroxide that will precipitate when 35.5 mL of 0.145 mol/L aqueous aluminum nitrate is mixed with 44.2 mL of 0.215 mol/L aqueous sodium hydroxide is approximately 0.247 grams

Explanation:

The given parameters are;

The volume of 0.145 mol/L aqueous aluminum nitrate in the reaction = 35.5 mL

The volume of 0.215 mol/L aqueous sodium hydroxide in the reaction = 44.2 mL

The balanced chemical equation for the reaction is given as follows;

Al(NO₃)₃ (aq) + 3NaOH (aq) → Al(OH)₃ (s) + 3NaNO₃ (aq)

Therefore;

1 mole of Al(NO₃)₃, reacts with 3 moles of NaOH to form 1 mole Al(OH)₃, and 3 moles of NaNO₃

The number of moles of aqueous aluminum nitrate in the reaction = 35.5/1000 L × 0.145 mol/L = 0.0051475 moles

The number of moles of aqueous sodium hydroxide in the reaction = 44.2/1000 L × 0.215 mol/L = 0.009503 moles

Therefore, 0.009503 moles NaOH will react with 0.009503/3 moles Al(NO₃)₃ to form 0.009503/3 moles of aluminum hydroxide precipitate

The molar mass of aluminum hydroxide = 78 g/mol

Therefore, 0.009503/3 moles of aluminum hydroxide weighs 78 × 0.009503/3 = 0.247078 grams

The mass of aluminum hydroxide that will precipitate out ≈ 0.247 grams.

What is the relative placement of the Moon, Earth, and Sun during a lunar eclipse?

1.The Sun, Earth, and Moon are aligned with the Earth in the middle and the Moon furthest away from the Sun.
2.The Earth and Sun are aligned with the Moon at a right angle to Earth.
3The Moon and Sun are aligned with the Earth at right a right angle to the Moon.
4The Sun, Earth, and Moon are aligned with the Moon in the center and the Earth furthest away from the Sun.

Answers

4

The moon being in the middle blocks much of the suns rays, causing near darkness for a few moments

Answer:

have a good day

Explanation:

1.The Sun, Earth, and Moon are aligned with the Earth in the middle and the Moon furthest away from the Sun.

_AICI3–> _AI + _Cl2
I need help

Answers

Answer:

2AlCl₃ ⇒ 2Al + 3Cl₂

Explanation:

Balance the equation–making sure there's an equal amount of reactants and products on both sides.

are particles in gas close together ​

Answers

Answer:

Solid particles are close together not gas particles

What is the molecule that formed between B and F?

Answers

Answer:

Hydrogen bond strengths range from 4 kJ to 50 kJ per mole of hydrogen bonds. In molecules containing N-H, O-H or F-H bonds, the large difference in electronegativity between the H atom and the N, O or F atom leads to a highly polar covalent bond (i.e., a bond dipole).

Explanation:

Which property or properties can change when the pressure of a gas changes?

Answers

Answer: This law states that the volume and temperature of a gas have a direct relationship: As temperature increases, volume increases, when pressure is held constant. Heating a gas increases the kinetic energy of the particles, causing the gas to expand

Explanation:

According to this law, a gas's volume and temperature are directly correlated: When pressure is held constant, volume rises as temperature rises. The kinetic energy of the particles in a gas increases when it is heated, which causes the gas to expand.

What rules apply to gases?

According to Boyle's Law, when the temperature and mass are both constant, the volume of a given volume of gas sustained at a constant temperature varies inversely with the applied pressure.

The quantity of gas particles, the volume of the container, and the temperature of the gas all affect the pressure of a gas that is confined. The pressure will rise as the amount of gas particles in a container increases. The pressure will rise as a container's volume increases.

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EMERGENCY!!! Can someone tell me the answer plz plz I’ll give you brainlist and points plz This is my final test No wrong answers

Answers

Answer:

A. the valence electrons

Explanation:

Answer:

The valence electrons

Explanation:

The valence electrons determine an element's properties because chemical properties of each element are determined by the element's electronic configuration and PARTICULARLY by its outermost valence electrons. I hope it helps!

                      ~Good luck

SOMEONE HELP ME PLEASE ILL GIVE BRAINLY

Answers

answer: chemical change

step-by-step explanation: because if it’s changing through heat, the temperature could be different. Chemical changes happen on a molecular level when you have two or more molecules that interact. Chemical changes happen when atomic bonds are broken or created during chemical reactions. therefore physical change in this given situation isn’t possible.

hope this helped.

The tail in figure A and the rings in figure C are held together by a similar force. What force holds the tail and the rings together?

Answers

Answer:

It has to be weak vander waal's forces of attraction.

Answer:

The tail and the rings are held together by the force of gravity.

When using a light microscope, focus the specimen with the scanning objective
lens first.
Reasoning:

Answers

Answer:

The light microscope bends a beam of light at the specimen using a series of lenses to provide a clear image of the specimen to the observer.

“True or False”
Unsaturated solution contains the maximum amount of solute dissolved by a given amount of solvent

Answers

ANSWER- True

EPLANATION

Which of the following redox conditions will produce a spontaneous reaction?
A. The sum of the voltages of the half-reactions is positive.
O B. The sum of the voltages of the half-reactions is negative.
O C. The voltage of the reduction half-reaction is positive.
D. The voltage of the reduction half-reaction is negative.

Answers

Answer:

A. The sum of the voltages of the half-reactions is positive.

Explanation:

correct on  a p e x

Among the following redox conditions those will produce a spontaneous reaction is The sum of the voltages of the half-reactions is positive.

What are redox reactions?

Redox reactions are the reactions in which reduction reaction and oxidation reaction happens simultaneously. The term ‘redox’ is a short form of reduction-oxidation. All the redox reactions can be broken down into two different processes: a reduction process and an oxidation process.

The loss of electrons and the corresponding increase in the oxidation state of a given reactant is called oxidation. The gain of electrons and the corresponding decrease in the oxidation state of a reactant is called reduction.

For example-

H₂ + F₂ → 2HF

Hydrogen is added to Fluorine gas so Fluorine has been reduced but Hydrogen has been oxidised.

Therefore, Among the following redox conditions those will produce a spontaneous reaction is The sum of the voltages of the half-reactions is positive.

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15. Name the element that has 3 energy levels and 3 valence electrons. *

Answers

Answer:

aluminium ..............

3. Hydrogen reacts with nitrogen to produce ammonia according to the equation:

3H2(g) + N2(g)  2NH3(g)

Determine how much ammonia would be produced if 100g of N2 reacts?​

Answers

Mass of ammonia produced : 121.38 g

Further explanation

Given

Reaction

3H₂(g) + N₂(g) ⇒ 2NH₃(g)

100g of N₂

Required

Ammonia produced

Solution

mol of N₂ :

[tex]\tt mol=\dfrac{mass}{MW}\\\\mol=\dfrac{100}{28}\\\\mol=3.57[/tex]

From the equation, mol ratio of N₂ and NH₃ = 1 : 2, so mol NH₃ :

[tex]\tt \dfrac{2}{1}\times 3.57=7.14~moles[/tex]

mass of NH₃(MW=17 g/mol) :

[tex]\tt mass=mol\times MW\\\\mass=7.14\times 17\\\\mass=121.38~g[/tex]

What are some ways that propane, butane, gasoline, diesel, and kerosene can be compared?

Answers

Answer:

Propane and butane are pure substances, which means that each one of them is made of only one type of molecule—propane molecules or butane molecules. In contrast, gasoline, diesel, and kerosene are not pure substances; they are mixtures of more than one substance.

Explanation:

Hope it is helpful...

Propane, butane, gasoline, diesel and kerosene are all hydrocarbons. They  can be produced from petroleum. All these are used as fuels.

What are hydrocarbons ?

Hydrocarbons are organic compounds containing  C-C backbone and C-H bonds, These compounds are composed of carbons and hydrogens. Different function groups can be added to the hydrocarbons to form  various organic compounds such as acids, esters , aldehydes, ketones etc.

Methane is the first hydrocarbon in the hierarchy based on number of carbons. Propane is third in this series since it contains 3 carbons and butane is 4th one. Gasoline, diesel and kerosene are all hydrocarbons with different carbon numbers.

All these are obtained  as a byproduct of petroleum. These are used as fuel in vehicles and house holds.  The difference in them is the number of carbon and hydrogen.

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What is this called? it might be sideways but it show look like a Y

Answers

Answer:

I'm thinking it might be Element 39: Yttrium, as this is Chemistry.

Explanation:

You are eating dinner with your familiy one night. Your little brother (Who is a disgusting monster ) asked if you likes "seafood?" When you said yes, He proceeded to show you his chewed up, or "See Food". Did a chemical reaction take place, yes or no? What evidence or lack of evidence do you have to support your answer?

Answers

Answer:

yes eating the food involves both physical and chemical changes. The chewing of food is a physical change, while the mixing of saliva with food triggers chemical reactions

Explanation:

Once the food mixes with the saliva in our mouth, chemical reactions start taking place in the food, leading to its breakdown and changes in its chemical composition. An evidence of the chemical changes is the taste that we feel when we eat something sweet or sour etc.

Answer:

a chechimal

Explanation:

2. How many liters of propane gas (C3H8) will undergo complete combustion with 34.0 L of oxygen gas? ___ C3H8 (g) + ___ O2 (g → ___ CO2 (g + ___ H2O(g

Answers

Answer:

6.8 liters of propane gas will undergo a complete combustion with 34.0 L of oxygen gas.

Explanation:

Given;

combustion reaction of propane and oxygen;

C₃H₈ + O₂(g)  → CO₂(g)     + H₂O(g)

Balance the chemical reaction as follows;

C₃H₈ + 5O₂(g)  → 3CO₂(g)   +   4H₂O(g)

From the balanced equation;

1 mole of C₃H₈ ---------------- 5 moles of 5O₂(g)

x Liters of C₃H₈ ----------------- 34.0 Liters of O₂(g)

x = 34 liters / 5

x = 6.8 liters

Therefore, 6.8 liters of propane gas will undergo a complete combustion with 34.0 L of oxygen gas.

i need to know what occupied vs full means for chemistry

Answers

You can get the answer on quizlet or google
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