Heellllp plzz
thanks​

Heellllp Plzz Thanks

Answers

Answer 1

Answer:

Tap test

Explanation:

Answer 2

Answer:

the rest dont sound as reasonable to me so i would say C

Explanation:


Related Questions

Name the following:
1. SF6

2. N2O4

3. Cl2O7

4. S2Cl2

Answers

Answer:

Solfuric Floride

Nitrodgen Oxide

Clorine oxide

Sulfur Cloride

Explanation:

IM A CHEMISTRY WIZ

What volume of chlorine gas (Cl2), measured at STP, can be produced by the decomposition of 73.0g of hydrogen chloride gas (HCl), according to the balanced equation? (the other product is hydrogen gas (H2))

Answers

Answer:

Explanation:

2HCl    =   H₂   +   Cl₂

2 mole     1 mole      1 mole

73 gram HCl = 73 / 36.5 = 2 mole of HCl

2 moles of HCl will produce 1 mole of chlorine gas .

At STP , one mole of chlorine gas has volume equal to 22.4 litre .

What colour change would you notice with China rose indicator when you add it to soap water and vinegar?

Answers

Dark Pink is observed.... When both are mixed....

HEEELPPP!!

Explain the difference between ionic and covalent bonding using the following term(s)

A. Electronegativities

B. Types of atoms bonding

Answers

Answer:

Explanation:

Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals. An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions.

need asap!
The boiling point of hydrogen sulfide is low. Explain why.

Answers

Sulfur is not nearly as electronegative as oxygen so that hydrogen sulfide is not nearly as polar as water. Because of this, comparatively weak intermolecular forces exist for H2S and the melting and boiling points are much lower than they are in water.

The boiling point of hydrogen sulfide is low because the oxygen atom was stronger electronegative than that of the Sulphur atom, water would be more polar than hydrogen sulphide.

What is polar molecule?

If a molecule does have more positive charges on one end than negative charges on the other, an electrical pole has been created. This is how polar molecules are typically formed.

What is boiling point?

The temperature where a liquid's vapor pressure reaches the pressure around it as well as the liquid transforms into a vapor is known as the boiling point of a substance.

The boiling point of hydrogen sulfide is low because the oxygen atom was stronger electronegative than that of the Sulphur atom, water would be more polar than hydrogen sulphide. Additionally, hydrogen sulphide has a lesser melting point as well as boiling point than water due to poor intermolecular forces (dipole forces, Vander Waal's forces).

To know more about polar molecule and boiling point

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what are the elements in the first period

Answers

Answer:

Explanation:

There are only two elements in the first period: hydrogen and helium. We can explain why there is less elements in the first row in modern theories of atomic structure.

Answer:

"Hydrogen and Helium". Hydrogen and Helium are the elements of the first period in the modern periodic table.

Explanation:

Given the reaction:
2KCIO3(s) - 2KCl(s) + 302(g)
What is the total number of moles of KCIO3(s) needed to
produce 6 moles of O2(g)?

Answers

Answer:

4 moles of potassium chlorate must be used to produce 6 moles of oxygen gas.

Explanation:

From the above reaction:

2KCIO3(s) - 2KCl(s) + 3O2(g)

where,

KCl = Potassium Chloride,

O2 = Oxygen

KClO3 = Potassium chlorate

To calculate the number of moles for KClO3

If 3 moles of O2 gives 2 moles of KClO3

then 6 moles of O2 gives 6/3 x 2 = 4 moles of KClO3.

Hence, 4 moles of KClO3 produces 6 moles of O2.

What is moles?

Moles are "a unit of measurement for chemicals, just as meters are measurement units for length and grams are measurement units for mass".

What is Potassium Chloride?

Potassium Chloride is a "metal halide composed of potassium and chloride".

What is Oxygen?

Oxygen is "an element with atomic symbol O, atomic number 8, and atomic weight 16".

What is Potassium Chlorate?

Potassium chlorate is "an important potassium compound that can be used as an oxidizer, disinfectant, source of oxygen, and component in pyrotechnics and chemistry demonstrations".

To learn more about Potassium Chlorate here

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The intensity of a sound wave increases as the wave spreads out from the source of the sound

Answers

Answer:

The more spread out their energy becomes

Un camion que circula a 90 km hora frena uniformemente con una aceleracion de -5 metros por segundos al cuadrado

Answers

Answer:

no habla espanol

Explanation:

what is a flame,metion two types of flames​

Answers

Answer:

A flame is defined as the gaseous part of the fire which is visible to us. A flame is created due to the high exothermic reaction.

Two types of flames based on the amount of oxygen available are:

Non-luminous or blue flame: In this type of flame the amount of oxygen is sufficiently large and it gives blue flame. For example: flame of Gas stove. Luminous flame: In this type of flame, the oxygen availability id not sufficient for the complete combustion and left unburnt carbon particles that forms yellow light flame. For example: kerosene lamp.

An average, how many eggs does a female release each
cycle?

Answers

Answer:

At birth, there are approximately 1 million eggs; and by the time of puberty, only about 300,000 remain. Of these, only 300 to 400 will be ovulated during a woman's reproductive lifetime. Fertility can drop as a woman ages due to decreasing number and quality of the remaining eggs.

Explanation:

Hope This Helps!!

Answer:

One egg per month usually .

Explanation:

This is the single egg that makes it through the whole ovulatory process

explain nature

have a great day



Answers

Answer:

The phenomena of the physical world at together which includes plants, animals, the landscape, and other features and products of earth as opposed to humans or human creations

Which chemical equation correctly represents the reaction that takes place when nitrogen gas and hydrogen gas are formed as ammonia decomposes? (4 points) a N(g) + H3(g) → NH3(g) b 2N(g) + 3H2(g) → 2NH3(g) c 2NH3(g) → N2(g) + 2H3(g) d 2NH3(g) → N2(g) + 3H2(g)

Answers

Answer:

d. 2NH3(g)-N2(g)+3H2(g)

A sample of gas at 3000.0mmHg inside a steel tank is cooled from 500.0°C to 0.00°C what is the final pressure of the gas in the steel tank

Answers

Answer:

1429.32 mmHg

Explanation:

Initial Pressure P1 = 3000.0mmHg

Initial Temperature T1 = 500.0°C + 273 = 573 K ( Converting to kelvin temperature)

Final Temperature T2 = 0.00°C + 273 = 273 K ( Converting to kelvin temperature)

Final Pressure P2 = ?

The pressure of a given amount of gas is directly proportional to the absolute temperature provided volume remains constant.

This is given by the mathematical expression;

P1 / T1  = P2 / T2

Inserting the values;

3000 / 573 = P2 / 273

P2 = 273 * 3000 / 573

P2 = 1429.32 mmHg

What is the most common oxidation number for group 3 on the periodic table?

Answers

Answer:

español

Un elemento del grupo 3 es un elemento situado dentro de la tabla periódica en el grupo 3. Los átomos de estos elementos tienen gran tendencia a oxidarse y son muy reactivos, predominando el estado de oxidación +3. Presentan propiedades muy similares al aluminio. Dan lugar a iones incoloros.

ingles

An element of group 3 is an element located within the periodic table in group 3. The atoms of these elements have a great tendency to oxidize and are very reactive, with the +3 oxidation state predominant. They have properties very similar to aluminum. They give rise to colorless ions.

Explanation:

ingles

Group -> 3

Group -> 3Period

Group -> 3Period4 21

Group -> 3Period4 21Sc

Group -> 3Period4 21Sc5 39

Group -> 3Period4 21Sc5 39Y

Group -> 3Period4 21Sc5 39Y6 57

Group -> 3Period4 21Sc5 39Y6 57The

Group -> 3Period4 21Sc5 39Y6 57The7 89

Group -> 3Period4 21Sc5 39Y6 57The7 89Ac

español

Grupo -> 3

Grupo -> 3Periodo

Grupo -> 3Periodo4 21

Grupo -> 3Periodo4 21Sc

Grupo -> 3Periodo4 21Sc5 39

Grupo -> 3Periodo4 21Sc5 39Y

Grupo -> 3Periodo4 21Sc5 39Y6 57

Grupo -> 3Periodo4 21Sc5 39Y6 57La

Grupo -> 3Periodo4 21Sc5 39Y6 57La7 89

Grupo -> 3Periodo4 21Sc5 39Y6 57La7 89Ac

what mixture is salt and water?
a.solutions
b.colloids
c.suspensions

Answers

A. Solutions is the right answer

Which is element number 10?

Please Help!!

Answers

Answer:

Neon is a chemical element with the symbol Ne and atomic number 10. It is a noble gas.

Answer:

Neon is the element which is in serial number 10 in the periodic table.

Neon is one of the noble gases, i.e., they are stable (talking about NOBLE GASES)

What is the molarity of a solution in which 35 mole of AgNO3 is dissolved in 5 L of solution?

Answers

Answer:

23

Explanation:

Answer:

0.118m

Explanation:

9. Which of the following is a chemical property of water at 4°C? its temperature its state its color

Answers

its ability to decompose into hydrogen and oxygen

This image shows
an example of
petrified wood.
How did this fossil
form?
A. it formed in amber
B. it formed in asphalt
D. it formed by petrifaction
C. it formed in ice
Copyright © 2003-2021 Acellus Corporation. All Rights Reserved.

Answers

Answer:

D. it formed by petrifaction

Explanation:

Petrifaction is the process of petrifying, fossilizing, or preserving wood; hence, "petrified wood."

What is the atomic number of an isotope with the following symbol:
20 F

Answers

Answer:9

Explanation:

F is Flourine on the periodic table; the atomic number of Flourine is 9

caution: when you say “20 F” your meaning is unclear. regardless of what you mean, though, the atomic number of F is 9

3. Among the pairs of organic compounds below. Which is
a. water, lubricating oil b. kerosene, liquefied perde​

Answers

Answer:

A is the right answerA is the right answerA is the right answerA is the right answer

Explanation:

Which of the following might be included in a chemical
reaction?
a
Molecules
blons
Pure elements
d
All of the above

Answers

Answer:

b) ions

Explanation:

Answer: all of the above

Explanation:

How are you able to light a bunsen burner​

Answers

Answer:

Lighting Bunsen Burner:

Explanation:

Close needle valve and collar. Open gas valve fully. Open needle valve 1/2 turn. Use the spark/lighter to light the flame.

2 SO2 + O2 + 2H2O ----> 2H2SO4 what reaction is this?

Answers

Answer: This type of reaction is a synthesis reaction.

Explanation: Reaction information:Sulfur Dioxide + Dioxygen + Water = Sulfuric Acid

If I balanced it, it would be 2SO2 + O2 + 2H2O → 2H2SO4

Percentage of isotopes in 35/17 Cl and 37/17 Cl with the molar mass of chlorine as 35.5g and the mass of each nucleon to be 1.0000 amu

Answers

Answer:

The abundance of 35/17 Cl is 75% and 25% of 37/17Cl

Explanation:

The molar mass of an atom is defined as the sum of the masses of each isotope times its abundance, that is:

35.5amu = 35amu*X + 37amu*Y (1)

Where X is the abundance of the 35/17Cl and Y the abundance of 37/17 Cl

As there are just these 2 isotopes and the abundances of both isotopes = 1:

X + Y = 1 (2)

Replacing (2) in (1):

35.5 = 35X + 37(1-X)

35.5 = 35X + 37 - 37X

-1.5 = -2X

X = 0.75 = 75%

And Y = 100-75% = 25%

The abundance of 35/17 Cl is 75% and 25% of 37/17Cl

ILL GIVE BRAINLIST PLS Question 3 of 5
Rhyolite forms as lava cools very quickly, forming holes.
Sometimes gems can form within the holes. The image
shows fire opal within rhyolite,
Which type of rock is rhyolite?
O A. Intrusive igneous
B. Extrusive igneous
O C. Metamorphic
D. Sedimentary

Answers

Answer:

the answer is b........

Where are fusion reactions found

Answers

Answer:

In a nuclear fusion reaction, the nuclei of two atoms combine to create a new atom. Most commonly, in the core of a star, two hydrogen atoms fuse to become a helium atom. Although nuclear fusion reactions require a lot of energy to get started, once they are going they produce enormous amounts of energy.

Explanation:

It’s usually in the core of a star. When two hydrogen atoms fuse to become a helium atom

How many atoms of each element are present in

Answers

Answer:

Three lithium and one nitrogen atoms


Aluminium can be manufactured from the electrolysis of a molten mixture of aluminium oxide and
cryolite. In this process, which electrode must be continually replaced

Answers

Answer:

The carbon anode

Explanation:

The carbon anode is continually replaced because it burns off as carbon IV oxide gas by reacting with the oxygen had produced at the anode.

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