1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Roman55 [17]
3 years ago
14

3. Which muscle tissue lacks striations?

Chemistry
1 answer:
Diano4ka-milaya [45]3 years ago
6 0

Answer:

your answer is b and hope ur help and mark me brainlist

You might be interested in
The planets which lie beyond the asteroids are called the _____ planets.
scoray [572]
It is different everywhere you look but it's mainly asteroid belt  <span />
8 0
2 years ago
Read 2 more answers
I have 2 samples of solid chalk (aka calcium carbonate). Sample A has a total mass of 4.12 g and Sample B has a total mass of 19
IRINA_888 [86]

Answer:

A) Sample B has more calcium carbonate molecules

Explanation:

M = Molar mass of calcium carbonate = 100.0869 g/mol

N_A = Avogadro's number = 6.022\times 10^{23}\ \text{mol}^{-1}

For the 4.12 g sample

Moles of a substance is given by

n=\dfrac{m}{M}\\\Rightarrow n=\dfrac{4.12}{100.0869}\\\Rightarrow n=0.0411\ \text{mol}

Number of molecules is given by

nN_A=0.0411\times 6.022\times 10^{23}=2.48\times 10^{22}\ \text{molecules}

For the 19.37 g sample

n=\dfrac{19.37}{100.0869}\\\Rightarrow n=0.193\ \text{mol}

Number of molecules is given by

nN_A=0.193\times 6.022\times 10^{23}=1.16\times 10^{23}\ \text{molecules}

1.16\times 10^{23}\ \text{molecules}>2.48\times 10^{22}\ \text{molecules}

So, sample B has more calcium carbonate molecules.

The ratio of the elements of carbon, oxygen, calcium atoms, ions, has to be same in both the samples otherwise the samples cannot be considered as calcium carbonate. Same is applicable for impurities. If there are impurites then the sample cannot be considered as calcium carbonate.

7 0
3 years ago
Solid magnesium has mass of 1300g and a volume of 743cm . what's the density of magnesium?
Lilit [14]
D = m / V

d = 1300 g / 743 cm³

d = 1.749 g/cm³
3 0
2 years ago
¿Qué elemento tiene el mismo número de órbitas que el Hidrógeno? ¿Por qué? ¿Tienen propiedades similares, por qué?
Aliun [14]

What element has the same number of orbits as Hydrogen? Why? Do they have similar properties, why?

Answer:

Helium

Explanation:

Helium has the same number of orbitals as hydrogen because they belong to the same period on the periodic table.

Periods are the horizontal arrangement of elements. Elements in the same period are known to have the same number of electronic shell or orbitals.

In period 1 where we have just Hydrogen and Helium, the number of orbitals is 1.

 

For properties of a specie, elements in the same group which are the vertical arrangement of elements have the same properties. Since both Hydrogen and helium are in different groups, their properties differ.

7 0
2 years ago
What direction would this plate move? (the plate is gray in color)
strojnjashka [21]

Answer:

from south to north thats what it look like

Explanation:

7 0
2 years ago
Other questions:
  • A. H+ concentration lower than OH- concentration:
    14·1 answer
  • What elements make up most of the mantle?
    6·1 answer
  • Redox 1/2 reaction Cu(s) + 2 AgC2H3O2(aq) = Cu(C2H3O2)2(aq) + 2 Ag(s)
    6·1 answer
  • 425 mL of neon gas at -12°C and 788 mmHg
    7·1 answer
  • Calculate the volume in cm^3 of 325.0 dg of alcohol. Alcohol has a density of 0.785g/mL.
    12·1 answer
  • How many scientific methods
    5·1 answer
  • Which set of these comparisons is INCORRECT? (More stable means it has a more negative energy.) a) The 1s orbital in H is more s
    11·1 answer
  • 7. Which statement correctly describes the density of Earth's mantle compared to the density of Earth's
    11·1 answer
  • What's the volume of 0.2 mol of hydrogen at STP.
    7·1 answer
  • Describe how the pH of anti-acid powder can be determined
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!