3 years ago

In a comparison of metals to nonmetals,metals tend to have

Chemistry

1 answer:

Georgia [21]3 years ago

3 0

They conduct electricity. They tend to have conductors of electricity.

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5. Which phase of matter can be defined as:

-Dominant- [34]

Answer:

I think it A not sure if I get it wrong sorry I need points.

7 0

2 years ago

NaCl and AgNO3 react in a double replacement reaction. Which is one of the products of this reaction?

hoa [83]

Answer:

nano3+agcl2

Explanation:

double displacement reaction

7 0

2 years ago

The amount of matter in a given amount of volume is referred to as

Damm [24]

Answer:

It would be Density because:

Density= mass/ volume

Density refers to the amount of matter or mass of a substance over a volume

7 0

2 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:

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

Regards!

5 0

3 years ago

Standard units of measure for density

Mrrafil [7]

Answer:

g/cm³ for solids,

g/ml for liquids

g/L for gases.

Explanation:

Though SI unit of density is kg/m³, for convenience we use g/cm³ for solids, g/ml for liquids and g/L for gases. Mathematically, density is defined as mass divided by volume: ρ=m/V

8 0

2 years ago