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Afina-wow [57]
3 years ago
5

If the mass is 44g and the volume is 10ml, what is the density of the object

Chemistry
2 answers:
Helga [31]3 years ago
6 0

Answer:44/10

Explanation:

Because D= G/ml

gayaneshka [121]3 years ago
6 0

Answer:

4.4g/ml

Explanation:

Density=mass/volume

D=44/10

D=4.4g/ml

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How do an ionic bond and a covalent bond differ
storchak [24]
<span>An ionic bond is the transfer of electrons and a covalent bond is a sharing of electrons 

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3 years ago
If a substance has a half life of 58 years and starts with 500 g radioactive, how much remains radioactive after 30 years?
Vilka [71]

Answer:

A = 349 g.

Explanation:

Hello there!

In this case, since the radioactive decay kinetic model is based on the first-order kinetics whose integrated rate law is:

A=Ao*exp(-kt)

We can firstly calculate the rate constant given the half-life as shown below:

k=\frac{ln(2)}{t_{1/2}} =\frac{ln(2)}{58year}=0.012year^{-1}

Therefore, we can next plug in the rate constant, elapsed time and initial mass of the radioactive to obtain:

A=500g*exp(-0.012year^{-1} *30year)\\\\A=349g

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5 0
3 years ago
Ammonium perchlorate nh4clo4 is a powerful solid rocket fuel, used in the space shuttle boosters. it decomposes into nitrogen n2
babymother [125]
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from reaction         2 mol                              1 mol
given                     x mol                              0.10 mol

Proportion:
<u>2 mol NH4ClO4 </u>= <u>1 mol Cl2</u>
x mol  NH4ClO4   0.10 mol Cl2

x= (2*0.10)/1 = 0.20 mol NH4ClO4
4 0
3 years ago
Elements are arranged in groups by similar atomic structure on the periodic table. This allows for an element's properties to be
svlad2 [7]

D) energy required to remove a valence electron

Explanation:

The ionization energy is the energy required to remove a valence electron from an element.

Different kinds of atoms bind their valence electrons with different amount of energy.

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  • The amount of energy required to remove the an electron in the valence shell is the ionization energy or ionization potential.
  • The first ionization energy is the energy needed to remove the most loosely bound electron in an atom in the ground state.
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Learn more:

Ionization energy brainly.com/question/5880605

#learnwithBrainly

4 0
3 years ago
Read 2 more answers
Consider the temperature versus time graph below. I which region is the substance in both the solid phase and the liquid phase?
SVEN [57.7K]

Answer:

2

Explanation:

The change of state occurs at a constant temperture and pressure. In the grahp we can see while the time passes, the temperature doesn't change.

The rect number 4 correspond to a liquid-gas phase

8 0
3 years ago
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