Groups of cells that work together are called .

Answers

Answer 1

Answer: group of tissues form a cell , and a group of cells form an organ

Related Questions

The Principle Quantum Number describes what aspect of electron orbitals?a) shape.b) orientation.c) spin.d) energy level.
In Experiment 1, the density of pure ethanol was found to be:Question 1 options:less than 0.793 g/mL.0.793 g/mL.0.999 g/mL.greater than 0.999 g/mL.
Of the elements Fe, Hg, U, Te, and Y, which is considered a Group A element?
TRUE OR FALSE? When energy changes form, some of the energy changes to heat.
which half reation equation represents the reduction of an iron(II) ion? Fe+2->Fe+3 + e- Fe+2 +2e- ->Fe Fe+3 +e- -> Fe+2 Fe->Fe+2 +2e-

At sea level, where the pressure was 104 kPa and temperature 21.1 ºC, a certain mass of air occupies 2.0 m3 . To what volume will the region expand when it has risen to altitude where the pressure and temperature are (a) 52 kPa, -5.0 ºC ( True or False )

Answers

Answer:

The volume of air at where the pressure and temperature are 52 kPa, -5.0 ºC is $3.64 m^3$ .

Explanation:

The combined gas equation is,

$(P_1V_1)/(T_1)=(P_2V_2)/(T_2)$

where,

$P_1$ = initial pressure of gas = 104 kPa

$P_2$ = final pressure of gas = 52 kPa

$V_1$ = initial volume of gas = $2.0m^3$

$V_2$ = final volume of gas = ?

$T_1$ = initial temperature of gas = $21.1^oC=273+21.1=294.1K$

$T_2$ = final temperature of gas = $-5.0^oC=273+(-5.0)=268 K$

Now put all the given values in the above equation, we get:

$(104 kPa* 2.0m^3)/(294.1 K)=(52 kPa* V_2)/(268 K)$

$V_2=3.64 m^3$

The volume of air at where the pressure and temperature are 52 kPa, -5.0 ºC is $3.64 m^3$ .

Which of the following values best classifies a bond between 2 atoms as being ionic?A. An electronegativity difference of greater than 1.7 between the atoms
B. An electronegativity difference of greater than 2.7 between the atoms
C. An electronegativity difference of less than 1.7 between the atoms
D. An electronegativity difference of less than 2.7 between the atoms

Answers

The general rule followed is that if electronegativity difference is greater than 2, then it is considered an ionic bond. An ionic bond is a type of bond characterizing a transfer of electrons within a bond. Common examples are salts which adds that ionic bonds are common between a metal and a nonmetal. Therefore, the best answer from above is letter B.

Answer is: A. An electronegativity difference of greater than 1.7 between the atoms.

Electronegativity (χ) is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

Atoms with higher electronegativity attracts more electrons towards it, electrons are closer to that atom.

For example, in ionic salt sodium fluoride (NaF), fluorine has electronegativity approximately χ = 4 and sodium χ = 1 (Δχ = 4 - 1; Δχ = 3), fluorine attracts electron and it has negative charge and sodium has positive charge.

Some substances cannot exist in liquid form at normal atmospheric conditions.
True or False ?

Answers

I think it might be true.

false that is what i think

Decomposition of potassium chlorate (KClO3) produces potassium chloride (KCl) and pure oxygen (O2). The balanced equation for the reaction is as follows.mc017-1.jpg
What volume of oxygen gas is released at STP if 10.0 g of potassium chlorate is decomposed? (The molar mass of KClO3 is 122.55 g/mol.)

Answers

Molar mass :

KClO₃ = 122.55 g/mol
O₂ = 32 g/mol

2 KClO₃ = 2 KCl + 3 O₂

2 x 122.55 g KClO₃ ----------> 3 x 32 g O₂
10.0 g KClO₃ ------------------> ?

Mass of O₂ = ( 10.0 x 3 x 32 ) / ( 2 x 122.55 )

Mass of O₂ = 960 / 245.1

Mass of O₂ = 3.9167 g

number of moles O₂ => 3.9167 / 32 = 0.1223 moles

1 mol -------------- 22.4 L ( at STP)
0.1223 moles ---- ?

V = 0.1223 x 22.4 / 1

V = 2.739 L

hope this helps!

Your answer is 2.74.

Supply the volume of insoluble substance from the displaced liquid Displaced liquid: 274 ml

Volume: ? L

Answers

1 L ----------- 1000 mL
? ------------- 274 mL

L = 274 * 1 / 1000

= 0.274 L

hope this helps!

What location is 90 degrees away from the equator?A) The south pole
B) Polaris
C) Both A & B
D) The north pole

Answers

C) both A and B

Each parallel measures one degree north or south of the Equator, with 90 degrees north of the Equator and 90 degrees south of the Equator
Hope this helps!

Answer:

C) Both A and B

Explanation:

The axis of 0 degrees latitude is known as the Equator. With 90 degrees north of the Equator and 90 degrees south of the Equator, each parallel measures one degree north or south of the Equator. The North Pole is 90 degrees north latitude, and the South Pole is 90 degrees south latitude.

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Write the ionic equation for the reaction of aqueous propanoic acid with aqueouspotassium hydroxide.

One group of scientists has proposed a new theory on Adaptation. A majority of scientists worldwide agree with the theory. The theory is most likelyA.biased. B.incomplete. C.accurate. D.unchangeable.