This element has nine more electrons than Technetium

Answers

Answer 1

Answer:

Tellurium

Explanation:

Technetium's position on the periodic table is 43 and Tellurium's is 52


Related Questions

If some paper and/or paper-like materials ignite and cause a very small fire at your lab table, you should?

Answers

Answer:

Tell your instructor immediately

If the fire is small enough you can try and extinguish it with a fire extinguisher.

pls help!! What volume is represented by each small tick mark? (look at attachment)

Answers

The mark represents a volume of 25ml.

What is a measuring cylinder?

A Measuring cylinder, a graduated cylinder, a cylinder measuring, or a mixing cylinder is a part of various laboratory materials that are used for the measurement of the volume of liquids, chemicals, or solutions during laboratory work.

Graduated cylinders have more precise and accurate measurements than the common volumetric flasks and beakers used in the laboratory. These are of various volumes ranging from small to big.

These graduated cylinders are also used for the determination of displacement. It is a measurement of the change in a volume of water when some additional materials are added to it.

This means that a graduated cylinder can be used for the determination of solid materials by taking the difference between the initial volume of water and the new volume of water.

Therefore, in this case, the mark represents a volume of 25ml.

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5. An object is a regular, rectangular, solid with dimensions of 2 cm by 3cm by 2cm. It has a mass of 24 g. find its density.

Answers

Answer:

Density, D = 2g/cm^3

Explanation:

Given the following data;

Length = 2cm

Width = 3cm

Height = 2cm

Mass = 24g

Density = ?

Volume of a rectangular solid (V) = Length × Weight × Height

Therefore, V = L× W × H

Substituting the values, we have;

[tex]V = 2 *3 * 2 = 12[/tex]

V = 12cm

Density can be defined as the ratio of mass to volume i.e mass all over volume.

Mathematically, [tex]Density = \frac{Mass}{Volume}[/tex]

[tex]D = \frac{M}{V}[/tex]

Substituting the values, we have;

[tex]D = \frac{24}{12}[/tex]

Density, D = 2g/cm^3

Hence, the density of the rectangular solid is 2g/cm^3.

Which of the following is a producer? O mouse cactus O snake O goose​

Answers

Answer:

cactus

Explanation:

Its a plant so it makes it own food

What is the electron configuration for an atom of tin in the ground state?

Answers

Answer:

The ground state electron configuration of ground state gaseous neutral tin is [Kr]. 4d10. 5s2. 5p2 and the term symbol is 3P0.

How are compound, elements, and mixure different

Answers

Explanation:

Compound: a substance that is made up of more than 1 type of atom bonded together Example: H2O

Mixture: combination of two or more elements or compounds not chemicaly bonded together. example: Sugar and salt in one container

elements pure substance of an atom. Example: hydrogen

How many electrons does the Ca^2+ ion possess

Answers

Answer:

18 electrons

Explanation:

Answer:

18 electrons

Explanation:

Ca has 20 electrons. Ca^2+ has 18 electrons

What happens when a Bose-Einstein condensate forms?
A. A large atom is split into many smaller atoms temporarily.
B. The atoms of the solid condense into one large superatom.
C. It causes all matter touching it to condense into a liquid.
D. The electrons separate from the nuclei forming a mass of unbound positive and negative charges.

Answers

Answer:

the answer would be B

Explanation:

The atoms of the solid condense into one large superatom. Hence, option B is correct.

What are atoms?

An atom contains a central nucleus surrounded by one or more electrons.

Bose-Einstein condensation occurs at a temperature very close to absolute zero i.e 273.15 degrees centigrade. Under such conditions, a large quantity of Boson occupies the lowest quantum state, at which point microscopic quantum phenomena become apparent macroscopically.  A BEC is formed by cooling a gas of extremely low density about one hundred thousandth the density of normal air, to ultra-low temperature.

Hence, option B is correct.

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What is another common name for the lanthanoids on the periodic table?

Answers

Lanthanide Lanthanoid, also called Lanthanide

any matter that does not have a definite shape or a definite volume is an

Answers

gas. gases have no definite volume or shape.

Electrons are in regions around the nucleus called energy levels. The first
energy level

Answers

Answer:

can only accommodate 2 electrons

25 PTS!

11. The metric prefix for 1/1000 is:
a) centi
b) milli
c) micro
d) kilo

Answers

the answer is milli.
Im pretty sure it’s D. Hope that helps!

Concrete is made of an uneven mixture of gravel, sand, and water. It is _____. homogenous heterogeneous a solution a solute

Answers

heterogeneous, because it does not have a uniform texture

hope That helps

Answer:

Heterogenous, I just took the quiz

Explanation:

please, please, please help! this assignment is due in a few mins and idk what to do. I will mark the first/best answer brainliest! Why do substances exist as a solid, a liquid, or a gas?

Answers

Answer:

Explanation:

The atoms and molecules in gases are much more spread out than in solids or liquids. They vibrate and move freely at high speeds. A gas will fill any container, but if the container is not sealed, the gas will escape. Gas can be compressed much more easily than a liquid or solid

Potassium, K, had 19 protons, 20 protons, 19 electrons. What is the charge of the atom’s nucleus.



HELP

Answers

Answer:

+ 19

Explanation:

The following data were obtained from the question:

Proton = 19

Neutron = 20

Electron = 19

Charge on nucleus =.?

From a background understanding of the structure of an atom, the nucleus of an atom contains protons and neutrons with the proton being positively charged and the neutron is neutral while the electrons being negatively charged revolve around the nucleus.

From the above question, we understood that the potassium atom has 19 protons which are all positively charged. This simply means that the nucleus has a charge of + 19 since the neutrons are neutral.

Why is being under the band of stability a problem?

Answers

Answer:

Because that indicates that something is not stable. (im pretty sure that's the reason. Im not fully sure. Good question!)

Explanation:

List the two factors used to calculate force ? (20 pionts)

Answers

Answer:The strength of the gravitational force between two objects depends on two factors, mass and distance. the force of gravity the masses exert on each other.

Explanation: i hope it answers your question

Answer:

blah blah blah

Explanation:

Which of the following statements are not scientific hypotheses?

•Santa Claus exists.

The growth of corn in lowa depends on the amount of rain that falls.

•Theft is immoral.

•The bark of a specific tree is poisonous to mice

Answers

Answer:

.

Explanation:

1 and 3 aren’t a hypothesis

Please answer this question, I will give brainliest! You fill a 2.0 L metal thermos with gas at room temperature (25.0 ˚C) and 1.0 atm. Put it in the freezer and the temperature drops to -15.0 ˚C. A. What is the pressure inside the thermos after it cools, in atm? Justify your answer. B. . … and what is that pressure in mmHg?

Answers

e temperature of a 0.750 L gas sample at 25°C and 2.00 atm is changed to 250°C.

What is the mass of 42.0 mL of a liquid with a density of 1.65 g/mL?

Answers

Answer:

The answer is

69.30 g

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

From the question

volume = 42 mL

density = 1.65 g/mL

The mass is

mass = 1.65 × 42

We have the final answer as

69.3 g

Hope this helps you

the following statement is an example of "if i post a image on Instagram at 7:00 pm, then ill get the most likes a. hypothesis b. problem c. experiment d. independent variable
I NEED HELP NOW PLEASE HELP ME AS FAST AS U CAN!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

a

Explanation:

The given statement if i post a image on social media at 7:00 pm, then ill get the most likes is a hypothesis.

What is hypothesis?

Hypothesis can be defined as an assumption which is made for the sake of argument . It is an interpretation of a practical condition for which action needs to be taken.It is defined as a tentative assumption which is made to test logical consequences.It is an antecedent clause of a statement which is conditional.

It is constructed before research. There are six types of hypothesis 1)simple hypothesis 2) complex hypothesis 3) directional hypothesis 4)non-directional hypothesis 5) null hypothesis 6)casual hypothesis

The hypothesis should be clear and precise, it must be specific and way of explanation of hypothesis should be simple.

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What characteristic of an epic hero does this passage
show?
the ability to embark on a long journey
the ability to receive help from a supernatural force
the ability to speak with confidence

Answers

The ability to speak with confidence shows the characteristic of an epic hero does this passage show. Option C is correct.

What is confidence?

The  feeling  or emotion or belief that one or a person  can have faith in or trust on someone or for something that he or she is doing or about to do and the hero are the inspiration for the society.

In other words a feeling or emotion  of self-assurance or self believe  arising or rises  from an appreciation or motivation of one's own abilities or qualities or performance.

Therefore, ability to speak with confidence shows the characteristic of an epic hero does this passage show. Option C is correct.

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Answer:

B

Explanation:

Cuz

Which statement about the physical change of liquid water boiling into steam is true?

The heat added represents an energy change.
The action cannot be reversed.
The steam cannot conserve mass.
The weight lost represents a mass change.

Answers

A. The energy added represents an energy change.

Answer:

it A

Explanation:

ed 2020

Plsss help me now pls plss its a false and true questions

Answers

Answer:

to the atomic number one, is true

Element X has 3 naturally occurring isotopes. The first isotope has an atomic mass of 28.0 amu and a natural abundance of 14.0%. The second isotope has an atomic mass of 29.0 amu and a natural abundance of 66.0%. The third isotope has an atomic mass of 27.4 amu and a natural abundance of 20.0%. What is the atomic mass of element X?
a-27.1 amu
b-28.5 amu
c-28.9 amu
d-29.1 amu

Answers

Answer:

Option B. 28.5 amu

Explanation:

The following data were obtained from the question:

Isotope A:

Mass of A = 28.0 amu

Abundance (A%) = 14.0%

Isotope B:

Mass of B = 29.0 amu

Abundance (B%) = 66.0%

Isotope C:

Mass of C = 27.4 amu

Abundance (C%) = 20.0%

Atomic mass of element X =.?

The atomic mass of element X can be obtained by using the following formula:

Atomic mass = [(Mass of A × A%)/100] + [(Mass of B × B%)/100] + [(Mass of C × C%)/100]

Atomic mass of Element X = [(28 × 14)/100] + [(29 × 66)/100] + [(27.4 × 20)/100]

= 3.92 + 19.14 + 5.48

= 28.54 ≈ 28.5 amu

Therefore, the atomic mass of Element X is 28.5 amu

In which state do the particles have the most energy?

Answers

Answer:

gas

Explanation:

The gas state.

Because they are not confined by a certain place. All the molecules are bouncing off eachother.

If you dissolve 5.00 kg of methanol (CH_4O) in 2.00 m^3 of water, how many molecules of methanol per liter of water do you have? (1 kg = 1000 g; 1 m^3 = 1000 L)

Answers

Given :

Mass of methanol ( [tex]CH_3OH[/tex] ) , m = 5 kg = 5000 g .

Volume of water , [tex]V=2\ m^3=2000\ L[/tex] .

To Find :

Molecules of methanol per liter of water .

Solution :

Moles of methanol , [tex]n=\dfrac{5000}{32}=156.25\ mol[/tex] .

We know , 1 mole of a substance contains [tex]6.022\times 10^{23}\ mol^{-1}[/tex] .

So , total number of molecules :

[tex]M=156.25\times 6.022\times 10^{23}\\\\M=9.41\times 10^{25}[/tex]

Number of molecules per liter :

[tex]\dfrac{9.41\times 10^{25}}{2000}\\\\4.705\times 10^{22}[/tex]

Hence , this is the required solution .

Part D
What does the number on the top right of the symbol show? If the value here is 0, what does that mean

Answers

Answer:

Explanation:

The  number  on the top  right  of  the  symbol shows  ATOMIC NUMBER , if it is written alone only one digit or number overall .

And if the  number is also in bottom left then bottom left number will be ATOMIC NUMBER and top right will be MASS NUMBER

Hope  this will help you *-*

Answer:

Explanation:

The number at the top right shows the electrical charge of the atom. A value of 0 means the atom is neutral, which means that the atom has the same number of electrons and protons.

HELP!!! Please answer.

Answers

Answer:

Magnesium dichloride

Explanation:

The answer is magnisum chloride

Which mineral is found in almost every type of rock?

Answers

Answer:

Olivine

Explanation:

Hope this helps! :) x

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