26,000 nanoliters = ? dekaliters
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Answer:

Density=mass / volume.

10= mass /80.

mass=10×80.

=800g

Answer:36

Explanation:

Answer:

Alkylation reaction help in formation of thiol R-SH

Say lets take sodium hydrosulfide (NaSH) and alkyl chloride (R-Cl)/ any acid like chloroaceic acid or choloro or potassim acetates.

R-Cl + NaSH --> R-SH + NaCl

Such reactions are seen in the production of paper from wood pulp and in the production of organic compounds like thioglycolic acids (TGA)

Answer:

Explanation:

as we know that 1dm3 =1000cm3

therefore x dm3 =120 cm3

1000X =1*120

X dm3 =120/1000=0.12

so 120 cm3 =0.12 dm3

now the number of moles of carbon dioxide at RTP is

moles =given volume(dm3)/standard volume at RTP

moles=0.12dm3/24

moles =5*10^-3

Answer:

D

Explanation:

I think it is D. Think about it- if a human jumps, they are less than the gravitational force. But, if you are greater than the gravitational force, I think you will go into space.

Answer:

Alcohol.

Explanation:

It has the lowest boiling point and high vapour pressure.

Answer:

4 mL

Explanation:

Use the density formula, d = m/v

Plug in the density and mass to solve for v:

4 = 16/v

4v = 16

v = 4

So, the volume is 4 mL

Answer:A B

How many electrons are there in Florine with a -1 charge? 10

What is the total number of nucleons in helium? 4

What is the mass number of an element if it contains 19 protons, 19 electrons, and 20 protons? 39

What is the atomic number of an element with 7 protons, 10 electrons, and 7 neutrons? 7

Explanation:  Credit to GOOGLE

Chemistry is the scientific discipline involved with elements and compounds composed of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during a reaction with other substances.

Answer:

half-life is 3.67s

Explanation:

The general law of the second-order reaction is:

[tex]\frac{1}{[A]}=\frac{1}{[A]_0}+kt[/tex]

As after 90.0s, the concentration of NO2 decreases from 0.500M to 0.0196M:

[tex]\frac{1}{[0.0196]}=\frac{1}{[0.500]}+k*90.0s[/tex]

49.02M⁻¹ = K*90.0s

0.5447M⁻¹s⁻¹ = K

Now, half-life, t1/2 is:

[tex]t_{1/2}=\frac{1}{K[A]_0}[/tex]

Half-life is:

t(1/2) = 1 / (0.5447M⁻¹s⁻¹*0.500M)

Gas particles are acting like tiny, solid spheres according to the question. This is option A

According to the kinetic-molecular theory, gases are made up of atoms or molecules that are always moving randomly and independently from one another. According to the hypothesis, gas particles don't have a strong attraction to one another and take up very little space in relation to the overall volume of the gas.

However, it shows that the gas particles are not operating in accordance with the kinetic-molecular theory's presumptions if they behave like tiny, solid spheres.

Learn more about kinetic theory:https://brainly.com/question/15357425

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Answer:

Actions that you have trained yourself to perform.

they are obtained by experience. they are not passed from generation. they can be learnt or abolished. Higher center's of brain is responsible for conditional reflexes

Explanation:

example riding a bike, swimming, typing

Answer:

d≈ 1.15 g/cm^3

Explanation:

The density of an object can be found by dividing the mass over the volume.

d= m/v

The mass of the object is 54.3 grams and the volume is 47.18 cubic centimeters.

m= 54.3 g

v= 47.18 cm^3

Substitute the values into the formula.

d= 54.3 g/ 47.18 cm

Divide.

d= 1.150911403136922 g/cm^3

Let’s round to the nearest hundredth. The 0 in the thousandth place tells us to leave the 5 in the hundredth place.

d ≈ 1.15 g/cm^3

The density is about 1.15 grams per cubic centimeter.

Answer:

B). An Experiment that tests the hypothesis.

Explanation:

The element that is missing from Yasir's scientific investigation is 'an experiment which tests a hypothesis.' His experiment does not provide a verifiable statement revealing his proposition or prediction regarding the possible outcome of the experiment which could be verified by using a research or investigation. He rather tests his proposition indirectly by asking 'which color they like better' and using it to make an educated guess. Thus, option B is the correct answer.

Answer: D. 4

Explanation:

For numbers with decimal point, we should start counting from the first number that non-zero from the left.

0.0001372

We start counting from 1, since it is the first non-zero number

1, 3, 7, 2

There are in total 4 significant figures

Hope this helps!! :)

Please let me know if you have any question or need further explanation

Answer:

option D is correct

Explanation:

the molecule of nitrogen and ethyne have triple bond in them

N2= N≡N

ethyne =CH≡CH

Answer:

The answer is

Explanation:

The density of an object can be found by using the formula

From the question

mass of metal = 210 g

volume = 81 cm³

Substitute the values into the above formula and solve for the density

That's

= 2.592592

We have the final answer as

Hope this helps you

Answer:

the answer is descriptive

Explanation:

descriotive never ever have hypothisis

Answer:

The number has 3 significant figures.

Answer:

It has approximatly 3

Explanation:

The Significant figures would be 9, 3 and 5!

Answer:

Explanation:

Density of a substance can be found by using the formula

From the question

Density = 11.35 g/cm³

mass of iron = 1.1 g

To find the volume substitute the values into the above formula and solve for the volume

That's

Making volume the subject we have

So we have

= 0.096916

We have the final answer as

Hope this helps you

Answer: I think its a hypothesis.

Explanation:

30 lb is 480 ounces

34 mi/second is 54.718 kilometre/ second

455 lb/ gal is 54521.024 grams / litre

50 cl is 500 millilitres

55nm is 5.5 × 10^-6 centimetre

Answer:

0.000435 kilometers

Explanation:

You divide the length of the value by divide the length value by 1e+6

Answer:

5 significant figures

Explanation:

Answer:

Reducing sugars are absent

Explanation:

Benedict's solution is an substance used in testing sugars. It is mixture of sodium carbonate, sodium citrate and copper(II) sulfate pentahydrate. It can be used instead of Fehling's solution in testing for the presence of reducing sugars.

Reducing sugars contain the -CHO group. If there is no colour change after the addition of Benedict's solution, then we can conclude that reducing sugars are absent.

Answer: it’s 8

Explanation:

Area is length x width, so you would multiply the 4 by the 2. Or as it says in the question count the squares inside the rectangle. Most of the time, however, you would multiply length x width.

Explanation:

An electron current, the flow of electrons, contributes to an electric current since the electron 'carries' negative electric charge. ... The flow of ions (either positively or negatively charged) also contributes to an electric current in, for example, the electrolyte of an electrochemical cell.

hope it will work well?!

The flow of electric charge across two points is referred to it as an electric current. Electron pairs warm circuits in light lamps and electrical furnaces and generate magnetic fields in motors, inductors, and generators, and further calculation can be defined as follows:  

brainly.com/question/790768

✅Chemical reactions often involve changes in energy due to the breaking and formation of bonds. Reactions in which energy is released are exothermic reactions, while those that take in heat energy are endothermic.

IamSugarBee

Answer:

Heat as a reactant makes the change endothermic, while heat as a product makes the change exothermic.

Explanation:

In an endothermic reaction, heat is a reactant, making the endothermic reaction cooler than its surroundings. This can be compared to how an ice cube melting requires heat as a reactant.

In an exothermic reaction, heat is a product, making the exothermic reaction hotter than its surroundings. This is compared to how a fire releases heat into the air as a product.

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