A block of aluminum occupies a volume of 15.0 mL and weighs 45 grams.

Answers

Answer 1
Answer: density equals 3 g/mL

Step by step explanation:

D=m/v
D=45/15
D=3

Related Questions

Hello everyone, I got stumped by this question:

Do you agree or disagree with the claim, A change to any gas in the atmosphere affects energy absorbed by the surface in the same way.

a
agree


b
disagree


Could you help me figure this out?

Answers

Answer:b

Explanation:

anybody still woke ???

Answers

Answer:

yep.. I am wide awake here.

yep

ExPlAnAtIoN:

yezs and nozs

Which of the following is true of squalene, a hexa-unsaturated hydrocarbon
with a formula of C₃₀H₅₀, which melts at – 5°C and boils at 285 °C?

Answers

Answer: The alkyne

Explanation:

Answer:

the alkyne

Explanation:

Hope it helps u

FOLLOW MY ACCOUNT PLS PLS

Calculate the molarity of 0.060 moles of sodium bicarbonate (NaHCO3) in 1500. mL of solution.

Answers

Answer: 0.040 mol/l

Explanation: Molarity c = n/V (Concentration)

c = 0.060 mol / 1,5 l = 0,040 mol/l

Under similar conditions, which gas diffuses most rapidly through a small
opening?
a. Methane, CH4
b. Carbon dioxide
C. Sulfur dioxide
d. Oxygen
e. Chlorine

Answers

The answer might be carbon dioxide

Answer:

e

Explanation:

a

Conclusion:

sports

what is the equation for the reaction between excess dry oxygen and iron fillings​

Answers

Answer:

Fe2 + O2 > FeO

Explanation:

I don't know how to make the letters small...

I need help with this Asap. Best answer gets brainiest, also how is your day.

Answers

The answer is a!!!!!!!!

How many kilojoules of heat must be transferred to a 480-g aluminum pizza pan to raise its temperature from 22°C to 234°C? The specific heat of aluminum in this temperature range is 0.96 J/g.°С. Show your work.​

Answers

Answer:

97.7 kJ

Explanation:

We'll use the formula for specifc heat: Q=mcΔT

Q= heat/energy (Joules), m= mass (grams), c= specific heat (different for each substance and is usually given)

ΔT= final temperature - initial temperature

Let's check our given units and see if they're the correct, here they all are. Let's plug in what we know.

Q=mcΔT

Q=(480)(0.96)(234 - 22)

Q=(480)(0.96)(212)

Q= 97,690 J

Before we submit an answer, let's check out units. We have our answer in Joules, but we want it it kilojoules, so we'll convert it knowing that:

1000 Joules = 1 kilojoule

97,690J x [tex]\frac{1 kJ}{1000J}[/tex] = 97.7kJ

Explanation:

the answer and the working out is shown above.

UNA ONDA SE MUEVE CON UNA FRECUENCIA DE 2 (HZ), Y SU RAPIDEZ DE PROPAGACIÓN ES DE 20 (m/s). ¿Cuál ES LA LONGITUD DE ONDA.

Answers

How is your day today

What is the half-life of a radioisotope if a 20 g sample becomes 5 g after 2 days?

Answers

Answer: A- 1 day

Explanation: I really hope that helped. BYE!!

1 day is the half-life of a radioisotope if a 20 g sample becomes 5 g after 2 days

A gas occupies 12.3 L at a temperature of 40.0 K. What is the volume when the temperature is increased to 60.0 K?

Answers

Answer:

the volume is 18.45 L

Explanation:

The computation of the volume when the temperature is increased to 60.0 K is shown below:

Since the gas occupied 12.3 L at a temperature of 40.0 k

And, the volume when the new temperature is 60.0 k

So, the volume is

= 60.0 k × 12.3 L ÷ 40.0 k

= 18.45 L

hence,  the volume is 18.45 L

1. How much heat is required to raise the temperature of 4.64kg of lead from 150°C to 219°C?

Answers

Answer: An amount of [tex]40980.48 J/g^{o}C[/tex] heat is required to raise the temperature of 4.64kg of lead from 150°C to 219°C.

Explanation:

Given: mass of lead = 4.64 kg

Convert kg into grams as follows.

[tex]1 kg = 1000 g\\4.64 kg = 4.64 kg \times \frac{1000 g}{1 kg}\\= 4640 g[/tex]

[tex]T_{1} = 150^{o}C[/tex]

[tex]T_{2} = 219^{o}C[/tex]

The standard value of specific heat of lead is [tex]0.128 J/g^{o}C[/tex].

Formula used to calculate heat is as follows.

[tex]q = m \times C \times \Delta T[/tex]

where,

q = heat energy

m = mass of substance

C = specific heat of substance

[tex]\Delta T[/tex] = change in temperature

Substitute the value into above formula as follows.

[tex]q = m \times C \times \Delta T\\= 4640 g \times 0.128 J/g^{o}C \times (219 - 150)^{o}C\\= 40980.48 J/g^{o}C[/tex]

Thus, we can conclude that [tex]40980.48 J/g^{o}C[/tex] heat is required to raise the temperature of 4.64kg of lead from 150°C to 219°C.

Four 22.4 samples of nitrogen are bottled at STP and placed into environments with varying temperature. Which environment yield a sample the the greatest kinetic energy?
A)100k
B) 303k
C)273 k
D)200k

Answers

mayeb a is the correct answer .....


Which lunar phase is 21 days after the first quarter?

Answers

Answer:  waning gibbous

Explanation:

Which fraction contains the largest molecules?
A) diesel
B)gasoline
C)kerosene?

Answers

Answer:

Hydrocarbons

Hydrocarbons are chemical compounds that contain the elements carbon and hydrogen only. They are compounds that are obtained from the fossil fuel crude oil by a process called fractional distillation.

Fractional distillation

Fractional distillation separates the crude oil mixture into a number of smaller, different parts called fractions. The fractionating column is hot at the bottom and cool at the top. Substances with high boiling points condense at the bottom and substances with lower boiling points condense on the way to the top.

The crude oil is evaporated and its vapours condense at different temperatures in the fractionating column. Each fraction contains hydrocarbon molecules with a similar number of carbon atoms, smaller molecules nearer the top and longer molecules nearer the base of the column.

Oil fractions

The diagram below summarises the main fractions from crude oil and their uses and the trends in properties. Note that the gases leave at the top of the column, the liquids condense in the middle and the solids stay at the bottom.

Explanation:

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The substances which are generally used to generate heat and light energy on burning are called fuels. The diesel fuel contains the largest molecules. Thus option A is correct.

What is Diesel?

The diesel fuel which is also called the diesel oil is found to be a combustible liquid and it is produced from the fractions of crude oil. The diesel fuel is found to be less volatile than the gasoline.

The chemical composition of a diesel fuel is usually denoted as C₁₂H₂₄. Apart from the carbon and hydrogen atoms small amounts of 'S', 'N' and 'O' are also present in the diesel.

Here gasoline is a derivative product obtained by the fractional distillation of crude oil and it is generally used in passenger vehicles whereas kerosene is a highly flammable liquid obtained from the distillation of petrol and is less volatile than gasoline.

The gasoline contains only 4 to 12 'C' atoms per molecule and it is a lightweight hydrocarbon mixture. The number of 'C' atoms in kerosene ranges from 10 to 16 per molecule and the diesel fuel is known as the heavyweight hydrocarbon mixture with 8 to 21 'C' atoms per molecule.

Thus diesel fuel consists of larger hydrocarbon molecules than gasoline and kerosene.

Thus the correct option is A - Diesel.

To know more about Fuels, visit;

https://brainly.com/question/29526169

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What of the following is NOT a common property of metals?

Answers

Answer:

the last one

Explanation:

liquid at room temp

An _______________________ (device that converts electrical energy into kinetic energy) runs by using the magnetic field formed by a ______________________________ formed into a loop.

Answers

Answer:

A motor (device that converts electrical energy into kinetic energy) runs by using the magnetic field formed by a flowing current formed into a loop.

justin noticed several cracks in the sidewalk. Weeds are growing through them, cause the crack to expand. What process is this?

Answers

Answer:

Explanation:

Weeds and Small Plant Roots Exploit Existing Concrete Cracks

Instead, the plant's roots take advantage of existing microscopic cracks. New cell growth takes place at the tips of plant roots. ... Eventually, molecule by molecule, the plant's growth can force its way into the slab and create a surface crack.

how much more acidic is a solution with a pH of 1 than a solution with a pH of 3

Answers

Answer:

A solution whose pH=1 is ten times more acidic than the solution whose pH=2.

Explanation:

A scientist wants to test the effectiveness of a medicine in treating
headaches. He puts the medicine into cookies and then tells his subjects to
lie down and have a cookie when they have a headache. He asks them to give
him feedback about how well these relaxation techniques work to cure their
headaches. What rule of ethics does this experiment break?
O A. The subjects are not informed that they are taking a medicine.
B. It is likely to harm his subjects.
C. The scientist is taking the work of others by reviewing the
subjects' feedback.
D. It is testing more than one variable at the same time.​

Answers

C) is correct

Have a good day

are the bonds of OCl2 polar?​

Answers

Answer: OCl2 is polar because the two O-Cl bond dipoles don't cancel each other.

Which family on the periodic table is least likely to enter into chemical reactions?
1
2
17
18

Answers

Answer:

the answer is seventeen

name any two
chemical fertilizers rich in potassium​

Answers

Explanation:

Fertilizers are chemically synthesized plant nutrients.

Nitrogen (N), Phosphorus (P) and Potassium (K) are macronutrients and are required in large amounts by plants. So, farmers use fertilizers in order to supply these nutrients. NPK 15:15:15 , NPK 20:20:20, NPK 15:30:15 are examples of fertilizers used to supply N, P, K to crops.

Explanation:

1.Potassium Nitrate(KNO3)

2.Potassium Sulphate(K2SO4)

They provide potassium to plants for making their roots and shoots healthy.

Si la masa de una muestra de un compuesto Y es de 196 gramos y contiene 2 mol, la masa molar de Y es

Answers

Answer:

98 g/mol

Explanation:

La masa molar de un compuesto es la cantidad de materia (medida como masa) que hay en 1 mol de dicho compuesto. Por lo tanto, puede calcularse como sigue:

masa molar = masa/número moles

Tenemos los siguientes datos del compuesto Y:

masa Y = 196 g

número de moles de Y = 2 mol

Entonces, podemos calcular la masa molar de Y de la siguiente manera:

masa molar Y = (masa Y)/(número de moles de Y) = 196 g/2 mol = 98 g/mol

An ambulance took 2 hours to cover a distance of 10 kilometers. Find its speed.​

Answers

Answer:

5km/hour

Explanation:

2hours = 10km

/2              /2

1 hour = 5km

Question:-

An ambulance took 2 hours to cover a distance of 10 kilometers. Find its speed.

Answer:-

Given:-

Distance = 10 kilometers.

Time = 2 hours.

To Find:-

Its speed.

Solution:-

We know,

[tex] { \boxed{\bf{\rm \red {Speed \: = \: Distance \: × \: Time}}}} [/tex]

Speed = 10 kilometers × 2 hours

Speed = 20 km/hr

Its speed is 20 km/hr. [Answer]

DOS MOVILES PARTEN A LAS 12:00 AL MISMO TIEMPO HACIA EL NORTE DEL PAIS .¿ QUE DISTANCIA LOS SEPARA A LAS 13 HORAS SUPONIENDO QUE SUS VELOCIDADES SON 20 M/S Y 50 K/H ?

Answers

Answer:

22km

Explanation:

Las velocidades de los móviles nos van a definir cuánta distancia recorren por unidad de tiempo. Para resolver este problema debemos hallar la distancia recorrida en una hora por cada vehículo (Porque de las 12 horas a las 13 solo hay una hora)

Un móvil está recorriendo 50km/h. En una hora recorrerá: 50km

El otro móvil recorre 20m/s. En km/h:

20m/s * (3600s / h) = 72000m/h * (1km / 1000m) = 72km/h. El móvil recorrerá, en una hora, 72km

1h = 3600s; 1km = 1000m

La distancia que los separa es de:

72km - 50km =

22km

What is the pH of a solution with a 3.2 x 10−6 M hydronium ion concentration?

Answers

Answer:

5.49

Explanation:

The pH of a solution can be found by using the formula

[tex]pH = - log ([ { H_3O}^{+}])[/tex]

H3O+ is the hydronium ion

From the question we have

[tex]pH = - log(3.2 \times {10}^{ - 6} ) \\ = 5.49485..[/tex]

We have the final answer as

5.49

Hope this helps you

For the simple reaction of A + B ---> C, if A is the limiting reactant for a certain set of conditions, then B is an excess reactant. True or False

Answers

Answer: True

Explanation:

Question 25 of 33
Which statement describes a periodie trend of brstionization energy?
A It tends to increase from top to bottom of a group
B. It remains the same within a period
c. It tends to decrease from top to bottom of a group
D. It tends to decrease from left to right across a period

Answers

Answer:

A) It tends to increase from top to bottom of a group

What equation is used to calculate atomic mass?



WARNING!!!! NO LINKS OR YOU WILL BE REPORTED!!!!

Answers

Answer:

Average atomic mass = f1M1 + f2M2 +… + fnMn where f is the fraction representing the natural abundance of the isotope and M is the mass number (weight) of the isotope. The average atomic mass of an element can be found on the periodic table, typically under the elemental symbol.

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