Which of the following is a testable hypotheses?

Answer:

vov-nhmb-snm

come here for study boy were not allowed girl are allowed i am also girl so come for study here we only study goo.gle meet

Answer: D

Explanation:

Answer:

d = 0.53 g/mL

Explanation:

Given that,

Mass of an unknown metal = 40 g

The volume of the metal = 75 mL

We need to find the density of the metal. We know that,

Density = mass/ volume

[tex]d=\dfrac{40\ g}{75\ mL}\\\\d=0.53\ g/mL[/tex]

So, the density of the metal is 0.53 g/mL.

Answer:

Q= mc∆T(ice) + mLF(ice) + mc∆T(water) + mLV(water) + mc∆T(steam)

m=250 g = 0.25 kg = ¼ kg c(ice)= 2100 J/kg.K c(water)= 4200 J/kg.K LF(ice)= 333.7 kJ/kg LV(water)= 2256 kJ/kg c(steam)= 2080 J/kg.K

Explanation:

Q= ¼ × 2100 × (0°-(-30°)) + ¼ × 333700 + ¼ × 4200 × (100°-0°) + ¼ × 2256000 + ¼ × 2080 × (145°-100°)

Q= 15750 + 83425 + 105000 + 564000 + 23400

Q= 791575 J

Answer:

a. milliliter.

Explanation:

I hope this helps

Answer:

milliliter

Explanation:

think liter

Answer:

B

Explanation:

the reason as to why B is the answer is because, the question is one that you will have to study and find more information about, while the others are simple and do not require you to go into such detail and research.

Answer:

The answer is A- K2CO3(aq)+H2O(I)

Explanation:

The person who made this question gave the answer so...eh??

Answer:

A) K2CO3(aq) + H2O(l)

Explanation:

Answer:

Cloud form

Explanation:

Evaporation happens when a liquid substance becomes a gas. When water is heated, it evaporates. The molecules move and vibrate so quickly that they escape into the atmosphere as molecules of water vapor. ... Once water evaporates, it also helps form clouds.

___________________________________________________________

*rate this answer and say thanks please!

Answer:

H2O

Explanation:

Answer:

Thegas should be cooled to -136.5°C.

Explanation:

Volume of a gas is directly proportional to its temperature on the kelvin scale. This is called Charles' law.

Initially, the gas had a volume of 3.0 L at 0°C(273 K).

We have to have the temperature at which the volume of the gas will be 1.5 L.

Let V1=3 L, T1=273 K, V2=1.5 L, T2=?

By Charles' law,

V1/T1=V2/T2

T2

=(V2×T1)/V1

=(1.5 L×273K)/3L

=136.5 K

=(136.5-273)°C

= -136.5 °C

Answer:

option 2

Explanation:

Explanation:

In chemistry, thermodynamics, and many other related fields, phase transitions (or phase changes) are the physical processes of transition between the basic states of matter: solid, liquid, and gas, as well as plasma in rare cases.

Answer:

In chemistry, thermodynamics, and many other related fields, phase transitions are the physical processes of transition between the basic states of matter: solid, liquid, and gas, as well as plasma in rare cases. A phase of a thermodynamic system and the states of matter have uniform physical properties.

Explanation:

Answer:

3° C

Explanation:

The dew point temperature is the temperature of the air to which the air must be cooled so as to become saturated with the water vapor.

Here it is given that the relative humidity in the air, RH=  is 65%

And the dry bulb temperature is T = 10° C

Therefore, the dew bulb temperature is,

 [tex]$Td= T - \frac{100-RH}{5}$[/tex]

[tex]$Td= 10 - \frac{100-65}{5}$[/tex]

       = 10 - 7

       = 3° C

So the dew point temperature is 3° C .

Answer:Explanation:

Your tool of choice here will be the mole ratio that exists between zinc metal,

Zn

, and hydrochloric acid,

:HCl

, in the balanced chemical equation.

Zn

(s]

+

2

HCl

(aq]

→

ZnCl

2(aq]

+

H

2(g]

↑

⏐

You're dealing with a single replacement reaction in which zinc displaces the hydrogen from hydrochloric acid. The products of the reaction are aqueous zinc chloride and hydrogen gas.

Now, as you can see from the balance chemical equation, a

1

:

2

mole ratio exists between the two reactants.

This tells you that in order for the reaction to take place, you need to have twice as many moles of hydrochloric acid as you do of zinc metal.At the same time, you have a

2

:

1

mole ratio between hydrochloric acid and hydrogen gas.

This means that the reaction will always produce half as many moles of hydrogen gas as you have moles of hydrochloric acid.

Since you know that

4

moles of hydrochloric acid are taking part in the reaction, and assuming that you have enough zinc metal so that it doesn't act as a limiting reagent, you can say that the reaction will produce

4

moles HCl

⋅

1 mole H

2

2

moles HCl

=

2 moles H

2

Answer:

Explanation:

Through food chains, the carbon that is in plants moves to the animals that eat them. Animals that eat other animals get the carbon from their food too. Carbon moves from plants and animals to soils. When plants and animals die, their bodies, wood and leaves decays bringing the carbon into the ground.

Answer:

the answers to this is Convergent, Divergent, Convergent, Convergent, and Transform

Explanation:

i just answered it :))

In different types of plate boundaries, various geological features occur such as volcano and mountain formation.

Plate boundaries are the areas where the edges of two tectonic plates meet.

Plate boundaries can either be divergent, convergent, or transform.

At different plate boundaries, different geological activities occur.

Therefore, at different types of plate boundaries, various geological features occur.

Learn more about plate boundaries at: https://brainly.com/question/24519460

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Answer:

The correct answer is B)The intermolecular attractions are stronger with chlorine than iodine.

Explanation:

Have a nice Day

Answer:

cfvghjnmkljhgtfaASDFGVBHNJNGFDXZVBRNHT45RFD

Explanation:

Loggerhead turtles live and migrate around the Atlantic Ocean. Which of the following is an adaptation of Loggerhead turtles? *

Answer:

My best guess would be pressure

Explanation:

I say pressure because it just makes more sense

Answer:

B: Base

Explanation:

Correct

In acid-base reaction, h20 is the Base.

The reaction HCl(aq) + H2O(l) H3O+(aq) + Cl(aq) - HCl gives water a proton. HCl is an acid as a result. A proton is taken up by H2O from HCl. H2O is a base as a result.

Learn more about Acid–base reaction brainly.com/question/15209937

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Answer:The first task of a nuclear weapon design is to rapidly assemble a supercritical mass of fissile uranium or plutonium. A supercritical mass is one in which the percentage of fission-produced neutrons captured by another fissile nucleus is large enough that each fission event, on average, causes more than one additional fission event. Once the critical mass is assembled, at maximum density, a burst of neutrons is supplied to start as many chain reactions as possible. Early weapons used a modulated neutron generator codenamed "Urchin" inside the pit containing polonium-210 and beryllium separated by a thin barrier. Implosion of the pit crushed the neutron generator, mixing the two metals, thereby allowing alpha particles from the polonium to interact with beryllium to produce free neutrons. In modern weapons, the neutron generator is a high-voltage vacuum tube containing a particle accelerator which bombards a deuterium/tritium-metal hydride target with deuterium and tritium ions. The resulting small-scale fusion produces neutrons at a protected location outside the physics package, from which they penetrate the pit. This method allows better control of the timing of chain reaction initiation.

Explanation:

Answer:

Electricity. GIMME BRAINLIEST (pleasee) >:)

Explanation:

Answer:

cause ree

Explanation:

hvbvnfhfjfnmsmskskakskksvdbd

Answer:

2Na3PO4 + 3CaCl2 → 6NaCl + Ca3(PO4)2

Answer:

a

Explanation:

The pollution will kill the local pond life, and amphibians are very delicate to change.

Mark me brainliest?

The pollutants from a factory will have a negative effect on

a. local pond life

This effect is known as water pollution.

The plants go through such a lot of oxygen during the evening and during rotting processes that there is none left for the other lake life. The development additionally forestalls daylight arriving at the life forms beneath. At last, all the green growth bites the dust leaving a rancid, rotting mass.

Natural matter and supplements cause an expansion in high-impact green growth and exhaust oxygen from the water section.

Thus, correct option is a.

Find more information about Water pollution here:

brainly.com/question/24623157

Answer:

ANY KENITIC PARTICLE

Particles in both liquids and gases collectively called fluids

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Thank u  

XD

Answer:

Hexane will not have any dipole-dipole interactions because it is a non-polar molecule

Explanation:

Explanation:

This causes regions of both of these molecules that have partial negative charges and other regions wind up with partial positive charges. Hexane will not have any dipole-dipole interactions because it is a non-polar molecule. The intermolecular forces between hexane molecules will be dispersion forces.

Answer:

Because it can identify a person.

A DNA fingerprint is a piece of DNA so distinct that it can prove a person's identity. These distinct areas can take on many different forms, but each form is unique to any one individual.

PCR allows the amplification of a single copy of DNA into millions of copies. However this technique requires that the DNA of interest already be of a known sequence in order to design primers that will specifically hybridize to the target DNA.

It is important as:

It's used as evidence in courts, to identify bodies, track down blood relatives, and to look for cures for disease.

Learn more:

brainly.com/question/13695548

answer:

in heat transfer, as the fluid flows along the tube, the wall layers are heated or cooled. temp. variation occurs in the wall layers.

good luck :)

hopefully, this helps

have a great day !!