PLZ HELP ME WITH MY WORK​

PLZ HELP ME WITH MY WORK

Answers

Answer 1
c. high density
pls mark me as the brainliest :)
Answer 2

Answer:High density

Explanation:

The metal doesn't remains gas at room tempreture, it doesn't have brittleness property and it is not poor conductor of electricity .But, it has high density .

Hope, it would be correct.


Related Questions

True or false, The four units that must always be used when using the ideal gas are 44.0 liters

Answers

Answer:

for volume only liters can be used

Explanation:

How many moles of air are in a hot- air balloon with a volume of 2200m ^ 3 at a temperature of 388 K and a pressure of 100 kPa?

Answers

Answer:

Number of moles, n = 68.20 moles

Explanation:

Given the following data;

Volume, V = 2200 m³Temperature, T = 388 KPressure, P = 100 kPaIdeal gas constant, R = 8.314 J/mol·K  or 0.08206 L·atm·mol−1·K−1

To find the number of moles, we would use the ideal gas law equation;

PV = nRT

Where;

P is the pressure.V is the volume.n is the number of moles of substance.R is the ideal gas constant.T is the temperature.

Making n the subject of formula, we have;

[tex] n = \frac {PV}{RT} [/tex]

Substituting into the formula, we have;

[tex] n = \frac {100 * 2200}{8.314 * 388} [/tex]

[tex] n = \frac {220000}{3225.832} [/tex]

Number of moles, n = 68.20 moles

A sample of gas occupies 1.2 L at 12.0oC. Assuming pressure remains the same, what would be the volume (in L) of this gas at 67oC?

A.
1.4

B.
1.0

C.
0.2

D.
5.0

E.
6.7

Answers

Answer:

e.

6.7

hope it help

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hii pls help me to balance the equation and state the symbols thanksss​

Answers

Ca(s)+ H2O (l)----->H2 +Ca(oH)2

Ca(s)+2H2O(l)----->H2(g)+Ca(oH)2

I hope this helps

sorry if it's wrong

balanced chemical equation:Copper( ii) oxide solid +dilute sulphuric acid​

Answers

Answer:

CuO + H2SO4 = CuSO4 + H2O  

Reaction type: double replacement

A cylinder container with a diameter of 23.0 cm and a height of 140 cm contains N2O at a pressure of 108 kpa and temperature of 294 K. How many grams of N2O gas are in the cylinder?

Answers

Answer:

113.17 g

Explanation:

This can be solved using the Ideal Gas Equation:

PV=nRT

First step is to calculate the volume of the cylinder in L:

V=πr²h

V= π (11.5)² (140)

V= π (132.25) (140)

V = π (18.515)

V = 58,166.588 cm³ = 58.2 L

Then, convert kpa into atm:

1 kpa = 0.00987 atm

108 kpa = 1.06588 atm

Then, plug all of your values into the Ideal Gas Equation to solve for moles:

(1.06588)(58.2)=n(0.082057)(294)

62.034=n(24.125)

2.571357513=n

Finally, convert the moles into grams

2N = 28.0134 amu

O = 15.999 amu

_______________

44.0124 amu

(2.571357513moles)(44.0124 amu) = 113.17 g

2.
In photosynthesis, which substances are used up, which are produced and which are necessary
but remain unchanged after the reaction?
used up
produced
remain
A
carbon dioxide
water
oxygen
A
8
chlorophylt
carbon dioxide
water
с
oxygen
starch
cellulose
D
water
oxygen
chlorophyll

Answers

D. Water is used up, Oxygen is produced and Chlorophyll is necessary, but remains unchanged.

Mercury poisoning is a debilitating disease that is often fatal. In the human body, mercury reacts with essential enzymes leading to irreversible inactivity of these enzymes. If the amount of mercury in a polluted lake is 0.4 Hg/mL, what is the total mass in kilograms of mercury in the lake

Answers

Answer:

The total mass of mercury in the lake is 631,542.7 kg

Explanation:

Question: The given dimensions of the lake as obtained from a similar question posted online are;

The surface area of the lake, A = 100 mi²

The lake's average depth, d = 20 ft.

The concentration of the mercury, C = 0.4 μg Hg/mL = 0.4 × 10⁻⁶ kg Hg/L

Therefore, we have;

The volume of water mixture in the lake, V = A × d

∴ V = 100 mi² × 20 ft. = 2,787,840,000 ft.² × 20 ft. = 55,756,800,000 ft.³

1 ft³ = 28.31685 L

∴ 55,756,800,000 ft.³ = 55,756,800,000 ft.³ × 28.31685 L/ft.³ = 1.57885675 × 10¹² L

The total mass of mercury in the lake, m = C × V

∴ m = 0.4 × 10⁻⁶ kg Hg/L × 1.57885675 × 10¹² L = 631,542.7 kg

The total mass of mercury in the lake, m = 631,542.7 kg.

PLZ HELP ME WITH MY WORK
How many different elements are there in the molecule C8H11NO2,?
A. 21
B. 2
c. 11
D. 4 ​

Answers

Answer:

option C 11

is the correct answer

e) Hydrogen gas is a non-metal and can be prepared in a laboratory Explain why hydrogen gas is collected over water.​

Answers

Answer:

to collect pure hydrogen and avoid mixing with air

Under certain conditions, the substance mercury(II) oxide can be broken down to form mercury and oxygen. If 24.1 grams of mercury(II) oxide react to form 22.3 grams of mercury, how many grams of oxygen must simultaneously be formed? Grams oxygen

Answers

Answer:

1.76 g

Explanation:

2HgO(s) ==> 2Hg(l) + O2(g)

Number of moles of Hg = 22.3 g/ 201g/mol

= 0.11 moles

From the reaction equation;

2 moles of Hg is formed alongside 1 mole of oxygen

Hence;

0.11 moles of Hg forms 0.11 moles × 1/2

= 0.055 moles of oxygen

Mass of oxygen formed = 0.055 moles of oxygen × 32g/mol = 1.76 g

Calculate K for 2CO2(g) ⇔ 2CO(g) + O2(g)
given that the equilibrium concentrations of carbon monoxide, oxygen and carbon dioxide are 2.0 x 10-6 M, 1.0 x 10-6 M, and 0.25 M respectively.

Answers

Explanation:

here's the answer to your question

why is unit of pressure called a derived unit ?? 2) how do you measure the volume of milk?

Answers

1. Unit of pressure called a derived unit because it is a combination of base units (kg·m^-1·s^·2).

2. We measure the volume of milk by a instrument called Milk Lactometer.

Bài 19 với ạ, ai giúp em với ❤️❤️❤️❤️❤️

Answers

Answer:

we're are u from

Explanation:

also the writing from that paper look really cool

Elements in the same period Question 7 options: A) form bonds with the same type of elements. B) have the same number of protons. C) have the same number of valence electrons. D) have the same principal quantum number.

Answers

D is the answer .. I have send u pic also

Write a balanced molecular equation describing each of the following chemical reactions.
(a) Solid calcium carbonate is heated and decomposes to solid calcium oxide and carbon
dioxide gas.
(b) Water vapor

Answers

Answer:

don't know..............

The first atmosphere a. consisted mainly of water, carbon dioxide, carbon monoxide, and methane. b. was replaced by a secondary atmosphere that, arguably, consisted partially of gases brought to the Earth by comets. c. was replaced by a secondary atmosphere only after the Earth developed gravity, which helped deflect the solar wind. d. dissolved into the Earth's oceans before it was replaced by a second atmosphere.

Answers

Answer:

Hence the correct option is option b - was replaced by a secondary atmosphere that, arguably, consisted partially of gases brought to the Earth by comets.

Explanation:

The first atmosphere was formed during the formation of the world.  

But the secondary atmosphere formed mainly 2. billion years ago by earth's internal volcanic activity, or by the buildup of fabric from comet impacts.

What is the atomic number of the atom in the diagram above please ?

Answers

Answer:

5

Explanation:

The atomic number is the number of protons in an atom. Protons are the positively charged particles in the nucleus. The number of protons define the identity of an element. An element with 5 protons is Boron, no matter how many neutrons may be present.

The atomic number of the atom shown in the diagram is 5.

What is the atomic number?

The atomic number of an element refers to the number of protons in the nucleus of its atoms. It uniquely identifies an element and determines its chemical properties.

In the diagram, there are 5 proton numbers in the nucleus of the atom. In other words, this means that the atomic number of the atom is 5.

More on atomic numbers can be found here: https://brainly.com/question/14190064

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When an acid or base is placed in water, it breaks apart into charged particles called...
A.atoms
B.ions
C.indicator
D.molecules

Answers

Answer:

B: Ions.

Explanation:

It breaks into two particles when placed into water: A positive ion and a negative ion.

please help I will mark as brainliest........
Name 2 materials that will ferment when added to water and mixed together at about 20°c.​

Answers

Answer:

vegetables and salt

Explanation:

The ideal temperature for fermenting vegetables is between 18⁰-22⁰C. Within this range, the bacteria do their best work, giving high levels of lactic acid. The naturally occurring bacteria on fruits and vegetables is called lactobacillus. These bacteria convert the sugar to lactic acid, which is what gives that characteristic tangy/sour taste.

El hipoclorito de sodio (NaClO), es vendido en una solución clara de ligero color verde-amarillento y un olor característico que se conoce con el nombre genérico Límpido, con una concentración del 6%. Pero para la desinfección de superficies el Límpido, debe ser diluido al 0,5%. Cuánto Límpido debemos sacar del recipiente para obtener 200 ml de una solución al 0,5%.

Answers

Respuesta:

16,7 mL

Explicación:

Paso 1: Información provista

Concentración inicial (C₁): 6%Volumen inicial (V₁): ?Concentración final (C₂): 0,5%Volumen final (V₂): 200 mL

Paso 2: Calcular el volumen de la solución concentrada

Queremos preparar una solución diluida de hipoclorito de sodio a partir de una concentrada. Podemos calcular el volumen inicial que debemos tomar usando la regla de dilución.

C₁ × V₁ = C₂ × V₂

V₁ = C₂ × V₂ / C₁

V₁ = 0,5% × 200 mL / 6% = 16,7 mL

Color of the CuCl2 hydrate before heating:

Answers

hydrated cucl2 have blue-green colour

Any individual offspring produced through a sexual reproduction is always,

Answers

Answer:

Any individual offspring produced through asexual reproduction is always: genetically identical to its parent. made up of cells with a cell wall. different from all of its siblings

Any individual offspring produced through asexual reproduction is always: genetically identical to its parent. made up of cells with a cell wall. different from all of its siblings

The presence of which gas makes the planets Uranus and Neptune appear blue?
a. helium
b. hydrogen
c. methane
d. nitrogen

Answers

Answer:

C. METHANE

Explanation:

The blue color of both the ice giants can be contributed to the presence of methane in their upper atmospheres. Methane absorbs most of the red light incident on the planets which makes them appear blue in color.

why do we shake syrup medicines before drinking​

Answers

Answer:

The label may instruct you to shake a liquid medicine before using so that the active ingredients are evenly distributed throughout it.

Explanation:

Answer:

maybe because if somehow the liquids get separated then shaking them up would mix them back to how they are suppose to be originally.

Explanation:

Plz help I will give brainliest

Answers

Answer:

1. Fr

2. cl

3.H20

4.2 mole

5. 3

6. c

Matty told Harriet that, later that same day, he was going to try to convince her to change her attitude toward the nutritional merits of doughnuts. Based on research findings regarding persuasion, how effective is Matty's strategy?

Answers

Answer:

The correct answer is - not very effective; forewarning tends to reduce the effectiveness of an attitude change

Explanation:

The strategy of forewarning or warning before attempting any change in the psychology of an individual is found to be less effective. The subject sees a  forewarning seen as a warning that a person is going to attempt to make changes in the attitude of a person about a particular thing or situation.

As a result, the person is ready to defenses up with regard to that idea of persuasion which Builds up defenses for the situation. Therefore, the effect of persuasion is reduced on the person.

Thus, Matty's strategy is not very effective; forewarning tends to reduce the effectiveness of an attitude change

The dehydration of a secondary alcohol, like cyclohexanol, is a mechanism that occurs Choose... . First, the alcohol is protonated to Choose... , creating Choose... intermediate. Then, a Choose... is removed, moving the electrons from that bond to make a Choose... bond.

Answers

Answer:

Mechanism

explanation:

have a great day!

3g of clean mg ribbon and 8g of clean copper metal was burnt separately in equal volume of air and both mass reacted completely with air state and explain where they was greater change in mass??​

Answers

Answer:

gshshs

Explanation:

bshsjskskehhshs

The copper metal is heated in the air.  The magnesium ribbon emits a brilliant light and magnesium oxide, which is white. When oxygen is passed over copper (in the presence of heat), an oxidation reaction occurs, resulting in the formation of black copper oxide. The greater change in mass observed when they start to burned.

What is copper metal ?

Copper is a mineral and an element that is essential to our daily lives. It is a significant industrial metal due to its high ductility, malleability, thermal and electrical conductivity, and corrosion resistance. It is a necessary nutrient in our diet.

Metals are a class of materials that have high electrical and thermal conductivity, as well as malleability, ductility, and high light reflection. Copper (Cu), aluminium (Al), and other metals are examples.

The combustion of magnesium ribbon is a combined reaction. This is due to the fact that magnesium reacts with oxygen to form the single product magnesium oxide. When magnesium ribbon is burned in air, it reacts with the oxygen in the air to form magnesium oxide.

Thus, 3g of clean mg ribbon and 8g of clean copper metal were burnt separately in equal volume of air and both mass reacted completely with air the greater change in mass observed when they start to burned.

To learn more about copper metal, follow the link;

https://brainly.com/question/11992235

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By which process aqua fortis is manufactured
1) Haber's process
2) Ostwald process
3) Contact process
4) Deacon's process​

Answers

Answer: Aqua fortis is also known as Nitric Acid  

Explanation: and the process in making aqua fortis is THE OSTWALDS PROCESS

detailed explanation by me

ammonia is also used in this process, which is reacted with oxygen and water and a catalyst platinum.

HOPE THIS HELPSS!!!

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if you feel unsafe in your environment it cannot affect your self concept Regression and Correlation are two of the most often used and abused tools in research.a. Trueb. False Your company buys a computer system from IBM for $3 million and pays IBM $200,000 to install the computer system. The $3 million is on credit and your company pays $100,000 of interest on the loan in the current year. The acquisition cost of the computer system at the end of the current year will be V thnh trong cu ni dn gian sau l v no: Trng lng no lng y nh, Thnh lng no lng y th? * Bridgette bought 1 pack of white T-shirts and 5 packs of blue T-shirts for her basketball team. The white T-shirts come in packs of 2, and the blue T-shirts come in packs of 6. How many T-shirts did Bridgette buy in all? Help please!!!! Im really stuck. What was true about the Russian Revolution?A. It resulted in a world famous crisis B. It caused a decrease in immigration to the United States C. It restored a monarchy D. It caused a fear of foreign influence in the United States a college conducts a survey of its humanities professors about the languages that they know with the following results if no professor speaks all three language types how many professors speak Greek. a)72 b)72 c)134 d)178 When hydrogen gas reacts with oxygen gas, water vapour is formed according to thereaction 2H2 + O2 2H2O. If 3.00 mol of hydrogen gas react with 3.00 molof oxygen gas, which reactant will be the reactant in excess? Combine these radicals.Anyone pls I need Instructions: Solve the following equation for the variable given.on1/4 (4x - 4) = -2(6x + 7)Solving Linear Equation A company changes from the straight-line method to an accelerated method of calculating depreciation, which will be similar to the method used for tax purposes. The entry to record this change will include a Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. In the first step, nitrogen and hydrogen react to form ammonia: N2 (g) + 3H2 (g) 2NH3 (g) =H92.kJ In the second step, ammonia and oxygen react to form nitric acid and water: NH3 (g) + 2O2 (g) HNO3 (g) + H2O (g) =H330.kJ Required:Calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. Cons on the main shown on the graph over which interval is the value of the exponential function greater thanthe value of the quale Action?2513113O 038Se what is 3/16 of 200 written as a percentage? If the force on a spring is 2 N and it stretched 0.5 m, what is the spring constant?O A. 2 N/mOB. 0.2 N/mOC. 0.4 N/mOD. 4 N/m Is -46.2 a irrational number Need help with this, don't understand it. we weren't taught how to do this factor as the product of two binomials x2+6x-7 WHAT IS the side that is against the debate topic