Chemistry High School

HELPPP PLZZZ ASAPPPPPO

HELPPP PLZZZ ASAPPPPPO

Answers

Answer 1

Answer:

0.000471698

Explanation:

divide 0.125 by 265.

Related Questions

Match the following scientist with his experiment or contribution
J. J. Thomson
Albert Einstein
Niels Bohr
Ernest Rutherford
John Dalton
Robert Millikan
___________________ Oil-drop experiment
___________________ Atomic theory
___________________ Cathode ray experiment
___________________ Model of the atom
___________________ Gold-foil experiment
___________________ Photoelectric effect


PLEASE HELP!!!!!

Answers

J. J. Thomson - oil drop

Albert Einstein - atomic theory

Niels Bohr - model of the atom

Ernest Rutherford - gold foil experiment

John Dalton - cathode ray tube

Robert Millikan - photoelectric effect

The correct match of the scientists with their experiment or contribution are:

J. J. Thomson - oil dropAlbert Einstein - atomic theoryNiels Bohr - model of the atomErnest Rutherford - gold foil experimentJohn Dalton - cathode ray tubeRobert Millikan - photoelectric effect

Who are scientists?

Scientists are those people who research in different fields, and they do discoveries of new things. They study nature and every fill for the earth to know more, and they discover and open new secrets of the earth to the people.

Albert Einstein is a famous scientist that discovered relativity and the photoelectric effect. Neil Bohr explained the model of an atom, by which every matter is made up of.

Thus, the correct match is :

J. J. Thomson - oil dropAlbert Einstein - atomic theoryNiels Bohr - model of the atomErnest Rutherford - gold foil experimentJohn Dalton - cathode ray tubeRobert Millikan - photoelectric effect

To learn more about scientists, refer to the below link:

https://brainly.com/question/957656

#SPJ2


Help with question 01.4 pleaseeee

Answers

Answer:

Is there answer choices?

Explanation:

Please help, I need help with this question

Answers

Answer:

Flourine

chlorine

bromine

iodine

QUICK!! 2NaN3 —> 2Na + 3N2

this equation is balanced, but why does the N in the reactant have a subscript of 3, and the N in the product has a subscript of 2.

why did the subscript change? from what i learnt, when you balance an equation, you can only use coefficients to balance the equation.

Answers

Answer:

-Before balancing the equation, you need to determine the index of the components in the substances correctly to balance

-Between two atoms in the molecule N2 forms a stable triple bond, so nitrogen gas is denoted N2.

-Nitrogen in compounds with sodium carries a charge of -3, and sodium has a charge of +1 in all compounds, so we get NaN3

Explanation:

answer from VNese, used GGtranslate

Help me fill in all the blanks I’m not sure if I’m doing this correctly

Answers

okay what blanks????

A sample of gas is measured to be 375 ml at 1.15 atm. The pressure
is increased to 2.05 atm. What is the new volume?

Answers

Answer:

Direct method:

1.15x375/2.05

=21.03mL

Using the diagram below, which global winds are moving at points 1 and 6?





Question options:

Prevailing westerlies


Trade Winds


Polar Easterlies


Doldrums

Answers

Answer:

Polar Easterlies

Explanation:

Answer:

prevailing westerlies

Someone pls help me With this I will make you as brain

Answers

Answer:

C

Explanation:

How to Represent nitrogen and magnesium with the Bohr-Rutherford model?

Answers

Nitrogen: 2 electron shells and 5 valence electrons

Magnesium: 3 electron shells 2 valence electrons

find the atomic numbers of the as yet undiscovered next two members of the series.

Answers

What are u asking ???

how many grams are equal to 413 kg. [?]x10^([?])g

Answers

413000 grams thats the answer hope that helps ;]

The temperature of the ideal gas in the container shown is 300k. The gas occupies a volume of 1.27. What would be the volume of the gas if it’s temperature were decreased to 100k?

Answers

Answer:

0.432

Explanation:

The temperature of the ideal gas in the container shown is 300K. The gas occupies a volume of 1.27. What would be the volume of the gas if it’s temperature were decreased to 100K?

At 100K the particles are moving 1/3 as fast as 300K so the volume would be

1/3 X (1.27) =0.423

O Which of the following determines the
identity of an element?
a. atomic number
b. mass number
c. atomic mass
d. Overall changes

Answers

Answer:

A. atomic number

Explanation:

the mass number alone cannot uniquely identify an element. But the number of protons in the nucleus identifies it uniquely. In addition, if the atom is neutral, then the atomic number also equals the number of electrons in its orbitals.

phân tử khối của MnO4

Answers

Answer:

Phân tử khối của MnO4 = 55 + 16 x 4 =  119 ( đvC )

Explanation:

How many grams of water can be heated 75.0 celsius by the absorption of 40.0 kcal?

Answers

Answer:

8.9

Explanation:

Cho muối X vào dd NaOH, đun nóng, thu được một chất khí làm xanh giấy quỳ ẩm. Chất nào sau đây thỏa mãn tính chất của X?
A.K2SO4 B.NH4NO3 C.CaCO3
D.FeCl2

Answers

Answer:c

Explanation:

What force must act on a 30 kg mass object to give it an acceleration of 0.45 m/s²?


PLSS HELPP MEE THE SUBJECT IS SCIENCE

Answers

Explanation:

Force=mass×acceleration

F=m×a

F=30×0.45= 13.5N

hope this helps you.

3. How did your hypothesis work out? What was surprising in this experiment?


someone help please

Answers

Answer:

Whats the hypothesis and the experiment?

Explanation:

I cant really help without context

1. In the process of convection, heat travels
a.from side to side
b.upwards
c.downwards
d.in all direction​

Answers

Answer:

option d in all direction

Explanation:

very firstly you have to understand that what is convection convection is a process of heat transfer which is takes place due to molecules and you know molecules

can easily travels with any sites from side to side upwards or downwards so the answer will be in all direction

Which words describe the image below? CHECK ALL THAT APPLY.
A.)liquid
B.)solid
C.)gas

please help!

Answers

Liquid

Explanation : In liquids, the particles are near each other, but not tightly packed. The particles in a liquid are able to slide past each other.

trash photo again but the middle question is answered i just need the top and bottom question answered :)

Answers

Answer: ok

Explanation: i agree

Which represents an empirical formula?
a)C2H4
b)B2H6
c)Al2O3
d)C6H6

Answers

Answer:

C. Al2O3

Explanation:

The empirical formula is an expression that represents the simplest proportion in which the atoms that form a chemical compound are present. It is therefore the simplest representation of a compound.

For options A, B and D the empirical formulas are as follows:

A. CH2

B. BH3

D. CH

In the notations C-12 and C-14, what do the numbers after the element
symbol and hyphen represent?

Answers

The numbers represent their atomic mass

Which is a TCS food?

Answers

Answer:

Food from plant origin that is cooked such as rice, potatoes and pasta.Food from animal origin that is raw, cooked or partially cooked

Explanation:

i searched it up

Explanation:

TCS foods are foods that requires time and temperature controls to limit the growth of illness causing bacteria.

give reason : Inert gas shows least reactivity
pls help

Answers

Answer:

Noble gases also known as inert gases are the least reactive of all known elements because with eight valence electrons, their outer energy levels are full. As a result, noble gases cannot become more stable by reacting with other elements and gaining or losing valence electrons. Therefore, noble gases are rarely involved in chemical reactions and almost never form compounds with other elements.

Explanation:

The only exception is helium, which has just two electrons. But helium also has a full outer energy level, because its only energy level (energy level 1) can hold a maximum of two electrons. A full outer energy level is the most stable arrangement of electrons.

Answer question will give brainliest​

Answers

Explanation:

Elastic Potensial energy is what causes a ball to bounce or rebound because it is transformed into kinetic energy, which is then used to bring the ball back up.

how does density and flammability explain how carbon dioxide could be coming from the bath bomb?

Answers

The melting point is 152.7 C°, the boiling/decomposing point is 310 C°, and the density is 1.665 g/cm³. How are Bath bombs made? Baking soda is derived from soda ash.

Which common substance is a base?
Question 4 options:

vinegar

lemon juice

yogurt

ammonia

Answers

Answer:

AMMONIA

Explanation:

HOPE IT HELPS!!!!!

Answer:

Ammonia is a base.

Explanation:

Vinegar, lemon juice, and yogurt all have a pH under 7. If a substances pH is under 7 then it is acidic. If it is above 7 then it is a base. Ammonia has a pH above 7 therefore it is a base.

Someone pls help me With this I will make you as brain

Answers

The answer to that question is c

Answer the question below based on the periodic table entry for silicon.



What is the atomic mass?

14
28.08
2
28

Answers

Answer:

28

Explanation:

the atomic mass is the name that a downward under the element

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