Based on the information above, what is average speed of the toy car?
Fom/s
G 0.2 m/s
H 5 m/s
J 10 m/s

Answer:

hcl:-is as strong acid than water.naoh:-is as strong base than Nh3

Explanation:

hence naoh is base and HCl is acid

Answer:

The shine of the Sun on the lunar surface brightens it, while also giving the moon "dark sides". Its position in Earth orbit allows it to have certain phases because of its orbital position relative to the sun. You're welcome.

Explanation:

Answer: 4.91 kJ

Explanation:

The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.

[tex]Q=m\times c_l\times (T_(f,l)-T_(i,l))+m\imes L+m\times c_v\times T_(f,v)-T_(i,v)[/tex]

Q = Heat absorbed = ?

m= mass of mercury = 48.5 g  = 0.0485 kg

c = specific heat capacity = [tex]0.14kJ/kgK[/tex]

L = heat of vaporization = 59.2 kJ

Initial temperature of liquid mercury = [tex]T_i[/tex] = 400 K

Final temperature of mercury vapor = [tex]T_f[/tex]  = 700 K

Putting in the values, we get:

[tex]Q=0.0485\times 0.14\times (629.88-400)+0.0485\times 59.2+0.0485\times 0.14\times (700-629.88)[/tex]

[tex]Q=1.56+2.87+0.476[/tex]

[tex]Q=4.91kJ[/tex]

Answer:

16.2 kj

Explanation:

1.56kj + 14.31kj + 0.34kj

Answer:N

2

+ 3

H

2

-----> 2N

H

3

Explanation:

N

2

+

H

2

-----> N

H

3

Let us balance this equation by counting the number of atoms on both sides of the arrow.

N

2

+

H

2

-----> N

H

3

N=2 , H=2 N=1, H=3

To balance the number of N atom on Right Hand Side (RHS) , I will add one molecule of N

H

3

on RHS

N

2

+

H

2

-----> 2N

H

3

N=2 , H=2 N=2 , H= 6

To balance the number of H atoms on Left Hand Side (LHS) , I will add two molecules of

H

2

on LHS

N

2

+ 3

H

2

-----> 2N

H

3

N=2 , H=6 N=2 , H= 6

Answer link

Related questions

What is the chemical equation for photosynthesis?

How can I know the relative number of grams of each substance used or produced with chemical equations?

How can I know the relative number of moles of each substance with chemical equations?

How do chemical equations illustrate that atoms are conserved?

How can I know the formula of the reactants and products with chemical equations?

How can I balance this chemical equations? Potassium metal and chlorine gas combine to form...

How many types of chemical reactions exist?

How can a chemical equation be made more informative?

How can I balance this equation? ___ AlBr3 + ____ K2SO4 ---> ____ KBr + ____ Al2(SO4)3

How can I balance this equation? ____ Pb(OH)2 + ____ HCl ---> ____ H2O + ____ PbCl2

Answer:

you said brainliest

Explanation:

Addition is the answer

Given

80% 127I, 17% 126I, and 3% 128I.

Required

The average atomic mass

Solution

The elements in nature have several types of isotopes

Atomic mass is the average atomic mass of all its isotopes

Mass atom X = mass isotope 1 . % + mass isotope 2.% + ... mass isotope n.%

Atomic mass of Iodine = 0.8 x 127 + 0.17 x 126 + 0.03 x 128

Atomic mass of Iodine = 101.6 + 21.42 + 3.84

Atomic mass of Iodine = 126.86 amu

Answer:

See explanation

Explanation:

The major difference between distance and displacement is that distance is a scalar quantity while displacement is a vector quantity. Scalar quantities have magnitude without direction while vector quantities have both magnitude and direction.

The distance covered by Benjamina in both cases just refer to the difference in her position at each time without reference to the direction in which she changed her position.

Her displacement will clearly mention the direction in which she moved both when she walked to the front door of her apartment and when she walked to a friend's apartment.

Answer: 1.51355 mol.

Explanation:

Answer: Magnesium turns red litmus blue and sulphur turns blue litmus red.

Explanation:

When a metal reacts with oxygen present in air, it forms basic oxide which simply means when they react with water, they form basic solution.

The chemical equation for the burning of magnesium (metal) in air and reaction with water of the product so formed are as follows:

[tex]2Mg+O_2\rightarrow 2MgO[/tex]

[tex]MgO+H_2O\rightarrow Mg(OH)_2\text{ (base)}[/tex]

When a non- metal reacts with oxygen present in air, it forms acidic oxide which simply means when they react with water, they form acidic solution.

The chemical equation for the burning of sulphur (non-metal) in air and reaction with water of the product so formed are as follows:

[tex]S+O_2\rightarrow SO_2[/tex]

[tex]SO_2+H_2O\rightarrow H_2SO_3\text{ (acid)}[/tex]

There are 2 types of litmus:

Therefore, here, magnesium forms a basic solution, therefore it will turn red litmus blue whereas sulphur forms an acidic solution, so it will turn blue litmus red.

Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\[/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

[tex]n = \frac{3.0 \times {10}^{22} }{6.02 \times {10}^{23} } \\ = 0.049833...[/tex]

We have the final answer as

Hope this helps you

Answer:

elliptical galaxy

Explanation

:The combination of the two galaxies then forms what appears to be an elliptical galaxy as the arms begin to disappear. The merger of gasses creates new stars, and the new shape becomes more elliptical, globular, or sometimes irregular.

Explanation:

[tex] \frac{given \: mass}{molar \: mass} [/tex]

hope it helps:)

Answer:

16

Explanation:

Answer:

Oxygen has an atomic number of 8

Explanation:

Answer: proteins

Explanation:

Answer:

d. Equinox​

Explanation:

A certain day in spring and autumn where the amount of daytime hours and nighttime hours are the same is called equinox.

Equinox occurs twice in a year on March 20 and September 23rd.

Here ^ you have to tap to see the full pic. comment if u dont understand anything :)

Mass of copper produced = 5 g

The balanced chemical equation:

Zn + 2CuNO₃ → Zn(NO₃)₂ + 2Cu

Given:

0.037 moles of zinc and 0.11 moles of copper(I) nitrate

To find:

Mass of Cu  metal produced=?

The amount of CuNO₃  produced =0.11/2=0.055moles

Thus, amount of copper=0.037*2= 0.0740 moles  

The mass of copper produced =0.0740*63.5=4.699g=5g

Therefore, the Mass of Cu produced will be 5 g.

Learn more:

brainly.com/question/13852350

Answer:

Both traditional Western and alternative medicine can be considered health sciences. ... The field includes the study of medicine, nutrition and other health-related issues and the affect they may have on both humans and animals.

Explanation:

Answer:

Its A, sorry I wrote something else.

Explanation:

The equator is the warmest, and the sunlight is not pointing towards point A.\

Friendly guy that likes to help

Answer:

There is 61.538% oxygen in Al2(SO4)3.

Explanation:

Wt Of oxygen in the compound = 12*16 = 192 amu.

Total Wt. Of the compound = 2*12+3*32+12*16 = 312 amu.

Thus, percent of oxygen = Wt of oxygen/total Wt. Of compound *100

= 192/312 * 100=61.538 %

Answer:

B) carbon dioxide and water

Answer: B.) carbon dioxide and water

Explanation:

bc I got it right?

Answer:

64.25

Explanation:

Average atomic mass = percentage × mass of all isotopes/ 100

Relative atomic mass = 80*64+15*65+5*66/100

=5120+975+330/100

=6425/100

64.25

Answer:

D. solid candle wax near the flame melts as the candle burns.

Answer:

Part D, melting is a product of heating

Explanation:

Answer:

They are neutral

Explanation:

Salts are chemical compounds formed when acids and a bases are combined together. Both substances nuetralize each other as they react, thereby forming salts which are neutral substances. This resultant compounds are neither basic nor acidic. They have a pH of 7, which makes them neutral in nature.

Answer:

forms/types

Explanation:

Answer:

Investigating how carbon dioxide levels impact ocean pH

Explanation:

I hope this helps! :)

Answer:

p1v1=p2v2

2.5×2.5=1.5×v2

6.25=1.5v2

6.25 /1.5=v2

4.16L=v2

Answer:

3 releases energy

Explanation:

An electron in an energy level has a definite amount of energy associated with it at that level.

Electrons can undergo transitions from one level to another. However, when the electron changes its state, it must absorb or emit the exact amount of energy which will bring it from the initial to the final state.

When the electron is excited, it moves from the ground state to an excited state, it must absorb energy. On returning from an excited state to a lower level or the ground state, energy is emitted, giving rise to a line in the spectrum.

Answer: 3 because it releases energy

Answer:

45.165  ×  10²³ molecules

Explanation:

Given data:

Number of moles of SO₂ = 7.50 mol

Number of molecules = ?

Solution:

Avogadro number:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.  The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ molecules

7.50 mol  ×  6.022 × 10²³ molecules

45.165  ×  10²³ molecules

the law of conservation of mass applies.....?