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3 years ago

Grade 10 Science send answers plssssss

Chemistry

1 answer:

Angelina_Jolie [31]3 years ago

6 0

Answer:

ITS UPSIDE DOWN I CANT ANSWER IT

i will edit the answer if its normal

Explanation:

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Potassium is a(n)____ metal than zinc

JulijaS [17]

Answer:

Potassium is a more reactive metal than zinc

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3 years ago

How many atoms are in 3NaOH

andrew11 [14]

There are 3 Na, 3 O, and 3 H since you distribute the coefficient 3 to all atoms. So, if you add them up, there are 9 atoms in that compound. Hope that helps!

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3 years ago

Question 13 (1 point)

meriva

Answer:

1=C

2=B

3=E

4=A

5=D

Explanation:

Closer to 0 is more acidic, closer to 14 is more basic. 7 is neutral and the cut off point between if acidic or basic.

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3 years ago

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Calculate the volume (in cm³) of 38.5 grams of platinum if the density of platinum is 21.5 g/cm³. Give your answer to 2 decimal

Gennadij [26K]

Answer:

$\boxed {\boxed {\sf v\approx 1.79 \ cm^3}}$

Explanation:

The formula of density is:

$d=\frac{m}{v}$

If the formula is rearranged for volume, it becomes:

$v=\frac{m}{d}$

The mass of the platinum is 38.5 grams.

The density is 21.5 grams per cubic centimeter.

$m=38.5 \ g \\d= 21.5 \ g/cm^3$

Substitute the values into the formula.

$v=\frac{38.5 \ g}{ 21.5 \ g/cm^3}$

Divide. Note that the grams (g) will cancel each other out.

$v=1.79069767 \ cm^3$

Round to 2 decimal places (hundredth place). The 0 in the thousandth place tells us to leave the 9 in the hundredth place.

$v\approx 1.79 \ cm^3$

The volume is about 1.79 cubic centimeters.

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3 years ago

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Which forces can be represented in a free body diagram

Lilit [14]

I think external forces acting on an object may include friction, gravity, normal force, drag, tension, or a human force due to pushing or pulling can be represented by a free body diagram.

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3 years ago