Which diagram or diagrams represent a compound?

Answers

Answer 1

Answer:

x and z cuz compound are group of molecules or atoms

Related Questions

50 POINTS!!!!!!
Reactions that occur spontaneously must reach an energy threshold before they can proceed. The graph shows the amount of energy needed for a reaction to occur. Explain how enzymes are involved in this reaction and can affect the rate of this reaction.

Answers

Remember that enzymes always accelerate chemical equations, depending on what the enzyme is consisted of. As the enzymes are burned the reaction or amount of chemical reactions decreases.

Give the correct order of apparatus (Crucible, Filter funnel, Test tube, Dropper, Spatula) to show the correct arrangement that can be used to prepare and investigate the nature of pH of a sample of onion solution.

Answers

Answer:

Is it Crucible,Test tube,Dropper,Filter funnel, Spatula

Explanation:

The laboratory apparatus is used to experiment with the chemicals and to hold them. To prepare and investigate the pH of the onion sample apparatus required are the crucible, test tube, dropper, filter funnel, and spatula.

What is pH?

pH is the measurement of the hydrogen or the hydroxide ion concentration in the solution to determine the alkaline or acidic nature of the substance.

The pH of the onion solution can be determined by experimenting with the help of the laboratory apparatus and reagents. A crucible is a container that can withstand high temperatures.

A test tube is a glassware used to hold the substance or chemical in it. Similarly, a dropper is used to draw liquids. The filter funnel separates the filtrate or the solution. A spatula can be used to remove or add the substance.

Therefore, the correct order of the apparatus is the crucible, test tube, dropper, filter funnel, and spatula.

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Which of these element is NOT an alkali metal? Na Rb H cs

Answers

Answer: Hydrogen-H

Explanation: Hydrogen is a gas, the most abundant element in the universe and the simplest of them all

Cho hai điện tích q1 = 2.10-6 C, q2 = 4. 10-6C, đặt tại A và B trong không khí biết AB = 2 cm. Xác định vectơ cường độ điện trường tại:
a) H, là trung điểm của AB.
b) . M, MA = 1 cm, MB = 3 cm.
c) N, biết rằng NAB là một tam giác đều.

Answers

Answer:

Explanation:

sorry try lang baka mali

what is chemical formula of water, carbon dioxide, oxygen and hydrogen

Answers

Answer:

water= H20 , carbondioxide= co2 , oxygen=o2 , hydrogen=h2

Explanation:

Answer:

water: H2O,

carbon dioxide: CO2

oxygen:O₂

hydrogen: H2

Explanation:

Is college worth it

Answers

Answer:

in my opinion not really

Explanation:

A mixture that you eat with at least 6 compounds in it

Answers

Answer:

Coloured candies?

Explanation:

can someone help me plz

Answers

Answer:

what do you need help with?

Explanation:

Answer:

Hello brainly user! You did not provide a question for us to help you with! In order for someone to help you, you need to provide the question you are in need of help for. What's your question?

Name any two metals that are found in liquid state at NTP.

Answers

Answer:

mercury and gallium are two metals that are found in liquid state at NTP.

Iron (II) chloride
Covalent or ionic

Answers

Answer:

ionic

Explanation:

Iron(II) chloride, also known as ferrous chloride, is the chemical compound of formula FeCl2. It is a paramagnetic solid with a high melting point. The compound is white, but typical samples are often off-white

bnmmmmmmmxsdcwwegvwwfdvsdv

Answers

Answer:

bnmmmmmmmxsdcwwegvwwfdvsdv

what is the only process that removes carbon from the atmosphere

Answers

Answer:

Photosynthesis process

Explanation:

Photosynthesis removes carbon dioxide naturally — and trees are especially good at storing carbon removed from the atmosphere by photosynthesis.

Someone pls help me I will make you brain

Answers

Answer:

D, radiation

Explanation:

the sun's heat radiates onto the land, oceans, and surrounding atmosphere, warming them

Your teacher has just asked you to measure out 1.24 x 1023 molecules of sodium chloride, Sodium chloride has a chemical formula of Naci. Using a Periodic Table,
determine how many grams of sodium chloride you should measure out.
A 12.08
2.12 x 1028
284 g
D 72.5 x 1021 g

Answers

Answer:

Explanation:

A bc do it in a calculator and that’s what
you’d get

An atom of oxygen (atomic number 8) has a mass number of 17. How many neutrons are
in that atom?

Answers

Answer: # of neutrons = 9

Explanation:

# of neutrons = mass number - atomic number

= 17 - 8

= 9

∴ number of neutrons in an atom of oxygen of mass number 17, is 9.

2+2++++++++++++++++++++++++++++++++++++++++++++++3

Answers

Answer:

2 + 2 + 3 = 7

Explanation:

ggs ez

identify two ways in which carbon-12 carbon-13 and carbon-14 are alike

Answers

Answer:

identify two ways in which carbon-12, carbon-13, and carbon-14 are alike. they each have 6 protons and neutrons and they're all carbon atoms. what is a chemical compound?

What is an electrolytic cell?
A. A cell with a negative cell voltage
OB. A cell with a spontaneous redox reaction
C. A cell with a positive cell voltage
D. A cell that has a salt-bridge connection

Answers

Answer:

A. A cell with a negative cell voltage

Explanation:

Answers

Answer:

Sir James Chadwick discovered proton

Explanation:

Sir James Chadwick, was a British physicist who was awarded the 1935 Nobel Prize in Physics for his discovery of the neutron in 1932. In 1941, he wrote the final draft of the MAUD Report, which inspired the U.S. government to begin serious atomic bomb research efforts.

during June , earth is 152,000,000km from the sun. how far is earth from the sun in miles

Answers

Answer:

94448421.2201

Explanation:

multiply the value in kilometers by the conversion factor '0.62137119223684'.

So, 152000 kilometers = 152000 × 0.62137119223684 = 94448.42122 miles.

94448421.2 miles away from earth!

Save
Drag the tiles to the correct boxes to complete the pairs.
Which types of matter are these substances?
Tiles
element
compound
homogeneous mixture
heterogeneous mixture
Pairs
a cloud, which consist of small water droplets
distributed throughout the air
helium, a gas composed of identical atoms
rubbing alcohol, a liquid composed of chemically bonded
carbon, oxygen, and hydrogen atoms
sugar thoroughly dissolved in water
Submit

Answers

Answer:

1.heterogeneous mixture

2.element

3.compound

4.homogeneous mixture

Explanation:

The correct pairs are:

A cloud, which consist of small water droplets - Heterogeneous mixture

Distributed throughout the air

helium, a gas composed of identical atoms - Element

Rubbing alcohol, a liquid composed of chemically bonded - Compound

Carbon, Oxygen, and Hydrogen atoms

sugar thoroughly dissolved in water - Homogenous mixture.

In Heterogenous mixture, the composition of the mixture is not uniform. In Homogenous mixture, the composition is uniform throughout. Element is the combination of same atoms. Compound contains two or more elements.

Therefore, the correct pairs are,

A cloud, which consist of small water droplets - Heterogeneous mixture

Distributed throughout the air

helium, a gas composed of identical atoms - Element

Rubbing alcohol, a liquid composed of chemically bonded - Compound

Carbon, Oxygen, and Hydrogen atoms

sugar thoroughly dissolved in water - Homogenous mixture.

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A block of aluminum weighs 50.0g it's density is 2.70 g/cm3 what is the volume of a block

Answers

Answer:

18.51g/cm³

Explanation:

Mass=50.0g

Density =2.7g/cm³

Volume =Mass/Density

Volume =50/2.7

Volume =18.51g/cm³

Is CH4 a molecule, compound, or both?

Answers

Compound, because is made from more than one element

This will always help you= A molecule is formed when two or more atoms join together chemically. And a compound is a molecule that contains at least two different elements.

chemical equation why calcium oxide is a basic

Answers

In reaction with the acid, the metal oxides form salt and the water. ... When the metal oxides are reacting with the water, they form strong bases. The calcium oxides when reacting with the water form a strong base. Therefore, Calcium oxide is a base.

why is it important to make measurements using a standard?

Answers

A standard unit of measurement is a quantifiable language that helps everyone understand the association of the object with the measurement. It is expressed in inches, feet, and pounds, in the United States, and centimeters, meters, and kilograms in the metric system.

How many protons and neutrons are in the third isotope?

Answers

Answer:

6 protons and 7 neutron

Explanation:

Carbon has a third isotopes named carbon-13

All carbon isotopes have 6 protons .

This is called atomic number. To make it up to 13 in carbon -13 you will need 7 neutrons and 6protons .

which substance cannot be decomposed by a chemical change

Answers

Answer:

Nonbiodegradable substance

Elements or chemical elements I think

Someone pls help me I will make you brain

Answers

Answer:

D cooler temperatures

Explanation:

Make me b r a i n please

The PE of a magnet in the presence of another magnet is related to -

Answers

How close the magnets are together and which direction the poles are pointed to

What is the MAIN reason the author includes the section "Retirement? Not Really"?
Question 7 options:

to highlight Lehmann's lifelong commitment to scientific research

to emphasize Lehmann's role in advancing the position of women in science

to describe how Lehmann's research evolved over time

to show why Lehmann's work is not as well known as her male counterparts

Answers

Answer:

to highlight Lehmann's lifelong commitment to scientific research

Explanation:

Just took the test. I was correct.

The main reason the author includes the section "Retirement" to highlight Lehmann's lifelong commitment to scientific research. Thus, option A is correct.

What is scientific research?

An scientific research has been defined as the process that has been designed to diagnose the hypothesis which has the portion of the scientific method or procedure.

Scientific experiment has been done by the testing the particular medicine on an animal and by the observation and the impact of the medicine on the animal as well as the reaction of the animal.

There are mainly three types of the scientific experiments and these are experiment which has been consist of the major level of the scientific experimentation. The second type has been Quasi- experimental and third type is non- experimental study or reasearch.

Therefore, The main reason the author includes the section "Retirement" to highlight Lehmann's lifelong commitment to scientific research. Thus, option A is correct.

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