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3 years ago

PLEASE HELP ME WITH THIS IT'S DUE TOMORROW

Chemistry

1 answer:

Bond [772]3 years ago

7 0

Answer:

Both:

-They are both made up of cells embedded in an extracellular matrix. It is the nature of the matrix that defines the properties of these connective tissues.

Cartilage:

-Cartilage is thin, avascular, flexible and resistant to compressive forces.

-Cartilages are soft and flexible components present in ear, nose and joints.

Bone marrow:

-Bone is highly vascularised, and its calcified matrix makes it very strong.

-Bones are hard and tough which gives the structural framework of the skeleton in the body.

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Identify the state of matter in between C&D.

ladessa [460]

Answer:

Here's the answer in order

Explanation:

lol nvm

6 0

3 years ago

Which statements about the Gulf Stream are true? Choose all answers that are correct. The Gulf Stream is a cyclic change in the

iVinArrow [24]

Answers:

B, C, and D

Explanation:

B. True. The direction is generally northward, although it turns more to the east off North Carolina (see map).

C. True. The Gulf Stream is an ocean current, because it flows across the Atlantic Ocean.

D. True. It transports warm water from the Gulf of Mexico and the Caribbean towards Iceland and the British Isles.

A. Wrong. The Gulf Stream is not cyclic. It always flows in the same direction, roughly northeast.

6 0

4 years ago

A sample of an unknown gas takes 222 s to diffuse through a porous plug at a given temperature. At the same temperature, N2(g) t

gulaghasi [49]

Answer:

$\large \boxed{\text{45.1 g/mol}}$

Explanation:

Graham’s Law applies to the diffusion of gases:

The rate of diffusion (r) of a gas is inversely proportional to the square root of its molar mass (M).

$r \propto \dfrac{1}{\sqrt{M}}$

If you have two gases, the ratio of their rates of diffusion is

$\dfrac{r_{2}}{r_{1}} = \sqrt{\dfrac{M_{1}}{M_{2}}}$

The time for diffusion is inversely proportional to the rate.

$\dfrac{t_{2}}{t_{1}} = \sqrt{\dfrac{M_{2}}{M_{1}}}$

Data:

t₂ = 222 s

t₁ = 175 s

M₁ = 28.01

Calculation :

$\begin{array}{rcl}\dfrac{222}{175} & = & \sqrt{\dfrac{M_{2}}{28.01}}\\\\1.269 & = & \sqrt{\dfrac{M_{2}}{28.01}}\\\\1.609 & = & \dfrac{M_{2}}{28.01}\\\\M_{2} & = & 1.609 \times 28.01\\ & = & \textbf{45.1 g/mol}\\\end{array}\\\text{The molar mass of the unknown gas is $\large \boxed{\textbf{45.1 g/mol}}$}$

3 0

3 years ago

Natalie observes these characteristics in the model of an atom. (i) includes positive charge (ii) contains electrons (iii) expla

patriot [66]

Electron cloud model

5 0

4 years ago

Look at your unbalanced equation:

Nataliya [291]

Answer:

1 mole of Al³+

Explanation:

Balanced chemical equation;

Al³⁺ + Na₃PO₄ → 3Na⁺ + AlPO₄

From the above chemical equation, it is evident that this is displacement reaction which is a reaction involving one atom or charge displacing another one in the chemical reaction.

In this reaction, Al³⁺ has a charge of +3 while Na⁺ has a charge of +1. When Al³⁺ displaces Na⁺, it meets an anion of PO₄³⁻ and since both charges are equal, i.e +3 and -3, there's is a mutual exchange of electrons and bond formation occurs.

The ratio of AlPO₄ to Al³⁺ is 1 : 1

I.e 1 mole of Al³⁺ produce 1 mole of AlPO₄

4 0

4 years ago