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Answer:

Incomplete combustion - carbon monoxide and water.

Explanation:

Answer:

55.95K

Explanation:

its obtained from Q=MCT where

Q-amount of heat

M-mass of water

C-specefic heat capacity of water

T-change in temperature

Answer:

The boiling point of iodine is 363.7°F / 184.3°C

Answer:

B

Explanation:

All elements on group 18 are noble gases, which noble gases are in fact actually not highly reactive due to the large amount of valence electrons located on the out shell.

Answer:

arsenous acid

Explanation:

The options are;

A) Carbon dioxide

B) Carbon Monoxide

C) Chloro fluoro carbon and methane

D) Refrigerant Freon

Answer:

B) Carbon Monoxide

Explanation:

Greenhouse gases are compounds available in the atmosphere which are capable of absorbing infrared radiation, thereby making heat in the atmosphere to be trapped and held there. The most common ones are carbon Monoxide, carbon dioxide, chloro-fluoro carbon, methane, nitrous oxide, ozone and freon. Out of them, the one that is the most dangerous and doesn't contribute to climate change is carbon monoxide because it is a silent killer gas

Thus, option B is correct

Answer:

The water is the medium of the wave

Answer:

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

From the question we have

mass = 25 × 3.26

We have the final answer as

Hope this helps you

Answer:

Tin(II) iodide, also known as stannous iodide, is an ionic tin salt of iodine with the formula SnI2. It has a formula weight of 372.519 g/mol.

Explanation:

the moleque

Answer:

A) [tex]6.5\times 10^{23}\ \text{molecules}[/tex]

Explanation:

m = Mass of water = 38.9

M = Molar mass of water = 18 g/mol

[tex]N_A[/tex] = Avogadro's number = [tex]6.022\times 10^{23}\ \text{mol}^{-1}[/tex]

The reaction of electrolysis would be

[tex]2H_2O(l)\rightarrow 2H_2(g)+O_2(g)[/tex]

Number of moles of [tex]H_2O[/tex]

[tex]n=\dfrac{m}{M}\\\Rightarrow n=\dfrac{38.9}{18}\ \text{mol}[/tex]

From the reaction it can be seen that 2 moles of [tex]H_2O[/tex] gives 1 mole of [tex]O_2[/tex]

So, number of moles of [tex]O_2[/tex] produced is

[tex]\dfrac{38.9}{18}\times \dfrac{1}{2}=1.081\ \text{mol}[/tex]

Number of molecules

[tex]1.081N_A=1.081\times 6.022\times 10^{23}\\ =6.5\times 10^{23}[/tex]

So, [tex]6.5\times 10^{23}\ \text{molecules}[/tex] of oxygen is produced.

Answer:

(4) sperm - transports genetic material

Explanation:

Which reproductive structure is correctly paired with its function'?

(1) uterus - usual site of fertilization

(2) testis - usual location for egg development

(3) ovary - delivers nutrients to the embryo

(4) sperm - transports genetic material

Solution:

The uterus (also known as the womb) is where the fertiled egg (foetus) stays until it is ready to be delivered. The usual site of fertilization  is the fallopian tube.

The testis is responsible for the production of sperm and hormones. The uterus is where the egg development takes place.

The ovary is responsible for the production of egg and hormones. The embryo receives nutrient through the fetus.

The sperm transports genetic material to the ovum.

Answer:

4

Explanation:

because ovaries def do not deliver nutrients to the embryo thats the placenta and the testis are DEF not a site for egg development and the uterus is not where fertilization happens i believe its where the fetus is kept and therefore the only correct answer is 4 :)

Answer:

The answer is 76.0944

Explanation:

I hope this helps!

The molar mass and molecular weight of C3H6(OH)2 is 76.0944.

Answer: As we all are aware that life on Earth is existed due to several environmental changes and there are several scientific factors of sustainability that support the survival and evolution of life on Earth.

Scientific factors of sustainability include solar energy, chemical cycle, and biodiversity that supported life on Earth. solar energy helps all organism and especially producers to gain energy and store the energy which further used in chemical cycles of transferring energy to other trophic levels.

Chemical cycle also involves the interaction of biotic and abiotic envrionment with each other that leads to environmental changes as well as organisms adapt themselves accordingly.

Biodiversity maintains the balance in the ecosystem and prevent dominancy of one organism otherwise it can lead to scarcity and organism would not be able to survive. Variation in biodiversity due to random mating  in the same species leads to evolution and produces new species of organisms.  

Hence, scientific factors of sustainability play major role in survival and evolution of life on the Earth.

Explanation: Is this what you need

Answer:

An ammeter is a device that is used to measures the amount of current flowing in a circuit and a voltmeter measure electric potential difference in an electric circuit between two points.

An Ammeter is connected in series because of its low resistance capacity and it will be connected in parallel it can get damaged due to high current. A voltmeter is connected in parallel in an electric circuit because the potential difference remains the same when connected in parallel.

Answer:

neutron

Explanation

neutrons have no net charge

Answer:

New findings from NASA's Mars Reconnaissance Orbiter (MRO) provide the strongest evidence yet that liquid water flows intermittently on present-day Mars. Using an imaging spectrometer on MRO, researchers detected signatures of hydrated minerals on slopes where mysterious streaks are seen on the Red Planet. These darkish streaks appear to ebb and flow over time. They darken and appear to flow down steep slopes during warm seasons, and then fade in cooler seasons. They appear in several locations on Mars when temperatures are above minus 10 degrees Fahrenheit (minus 23 Celsius), and disappear at colder times.

Explanation:

Answer:

Bro, its so obvious. Its electrical conductivity.

Explanation:

Plastic is an insulator thus it can protect conducting material from shortage of current as well for the safety of users. Thus, option 4 is correct.

Conductivity of a material is the measure of its ability to pass electric current through it. Based on this there are three types of materials namely conductors, insulators and semiconductors.

Conductors are materials highly conducting at room temperature. Semiconductors are not conducting at room  temperature but can be conducting at higher temperatures.

Insulators does not conduct electricity at any situation. Hence, insulators are used to coat conducting wires and to protect from electric shock. Plastic s an insulator which can cover conducting copper wire for safety. Thus, option 4 is correct.

Find more on conductivity:

https://brainly.com/question/15085692

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Answer: C

Explanation:

Answer:

so the empirical formula for benzene is also CH.

Explanation:

Answer:

Mostly Metals, But hydrogen is the only one that isn't.

Answer:

The texture of a rock is a result of its mineral composition

Most rocks contain more than one type of sediment

Explanation:

Answer: Metal atoms lose electrons from their outer shell when they form ions: the ions formed are positive, because they have more protons than electrons.

Answer:

Sodium, Oxygen and Hydrogen

Explanation:

Na= Sodium

O= Oxygen

H= Hydrogen

Answer:

ammonia water especially : the impure solution obtained as a by-product in destructive distillation (as of coal, tar, and bones)

Explanation:

Answer:

liquor ammonia is the ammonia water especially , the impure solution obtained as a by-product in destructive distillation (as of coal, tar, and bones)

Answer:

Rate = K[NH₄⁺][NO₂⁻]

Explanation:

In kinetics studies of reaction, rate law is a mathematical expression that relates speed of reaction with concentrations of the reactants. For a reaction:

aA + nN → cC + dD

The rate law is expressed in terms of [A] and [B] as follows:

Rate = K[A]ᵃ[N]ⁿ

Where K is rate constant.

For the reaction:

NH4+ + NO2– ⟶ N2 + 2H2O

The rate law is:

As was said in the problem, the rate is porportional to [NH₄⁺] and to [NO₂⁻]

Answer:

A

Explanation:

RMM of ca(c2h302)2=158

%Ca= 40/158×100=25.3

%C=48/158×100=30.3

%H=6/158×100=3.7

%O=64/158×100=40.5

Answer:

a) 25.3% Ca, 30.4% C, 3.8% H, 40.5% O

Explanation:

Molar mass of Ca(C₂H₃O₂)₂  = 158.160 g/mol

percent composition:

Ca = (40 /158.160 ) × 100

Ca = 25.3%

C = (48 /158.160 ) × 100

C = 30.4%

H = (6 /158.160 ) × 100

H = 3.8%

O = (64 /158.160 ) × 100

O = 40.5%

40.5% + 3.8% + 30.4% + 25.3% = 100%

It means 1st option is correct.

Answer: 1s²2s²2p³ or it can also be 3s²2p³

Answer:

The electronegativity difference of the atoms in the bond.

Explanation:

Carbon is electropositive while Oxygen is highly electronegative, hence highly polar due to strong intermolecular forces.

The molecule is not symmetrical because it's dipole moments don't cancel out.