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marishachu [46]
3 years ago
7

Please Help Me please help me with my attachment

Chemistry
2 answers:
kotykmax [81]3 years ago
7 0
C bc it only has red in it
Anvisha [2.4K]3 years ago
6 0

Answer:

c and d

Explanation:

the others contain red and blue, c and d contain only one color, therefore meaning there's only one type of atom in them :)

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I have to do this for homework please help :)
kramer

Answer:

1..... nucleus

2......electron cloud

3.......protons

4........Neutrons

5..........electron

6............electrons

7...............Isotopes

8.....,...........ions

9....................charge

6 0
3 years ago
Which statement describes the differences between nuclear reactions and chemical reactions?
bearhunter [10]
Chemical reactions are a change in substance while nuclear is destruction
6 0
3 years ago
A star is estimated to have a mass of 2.0 x 10 ^36kg. Assuming it to be a sphere of average radius of 7.0 x 10 ^5 km. Calculate
Montano1993 [528]

Answer:

<em>a)</em> <em>1.392 x 10^6 g/cm^3</em>

<em>b) 8.69 x 10^7 lb/ft^3</em>

<em></em>

Explanation:

mass of the star m =  2.0 x 10^36 kg

radius of the star (assumed to be spherical) r = 7.0 x 10^5 km = 7.0 x 10^8 m

The density of substance ρ = mass/volume

The volume of the star = volume of a sphere = \frac{4}{3}\pi  r^{3}

==> V = \frac{4}{3}*3.142*(7.0*10^8)^{3} = 1.437 x 10^27 m^3

density of the star ρ = (2.0 x 10^36)/(1.437 x 10^27) = 1.392 x 10^9 kg/m^3

in g/cm^3 = (1.392 x 10^9)/1000 = <em>1.392 x 10^6 g/cm^3</em>

in lb/ft^3 =  (1.392 x 10^9)/16.018 = <em>8.69 x 10^7 lb/ft^3</em>

6 0
2 years ago
Look at the drawing of a beach. how do the waves change the beach
-Dominant- [34]

Answer:

i think its C

Explanation: im at the Beach all the time and waves wash the sand away

6 0
3 years ago
The specific heat capacity of concrete is 0.880 J/g °C
nata0808 [166]

Answer:

Solution given:

heat[Q]=?

temperature [T]=0.64°C

specific heat capacity [c]=0.880 J/g °C

mass[m]=3g

we have

Q=mcT=3*0.880*0.64°=1.69Joule

<u>the</u><u> </u><u>required</u><u> heat </u><u>is</u><u> </u><u>1.69</u><u>Joule</u><u>.</u>

5 0
3 years ago
Read 2 more answers
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