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allsm [11]
3 years ago
15

Choose the best scientific reasoning for how objects with different amounts of mass can influence the rate at which they slow do

wn.
Physics
1 answer:
aev [14]3 years ago
6 0

Answer:

The heavier something is, the harder it is to slow down. As such, higher amounts of mass result in a lower rate of slowing.

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A 3.20 g sample of a salt dissolves in 9.10 g of water to give a saturated solution at 25°C. a. What is the solubility (in g sal
muminat

Answer:

  • The solubility of the salt is 35.16 (g/100 g of water).
  • It would take 71.09 grams of water to dissolve 25 grams of salt.
  • The percentage of salt that dissolves is 52.7 %

Explanation:

<h3>a.</h3>

We know that 3.20 grams of salt in 9.10 grams of water gives us a saturated solution at 25°C. To find how many grams of salt will gives us a saturated solution in 100 grams of water at the same temperature, we can use the rule of three.

\frac{3.20 \g \ salt}{9.10 \ g \ water} = \frac{x \ g \ salt}{100 \ g \ water}

Working it a little this gives us :

x = 100 \ g \ water * \frac{3.20 \g \ salt}{9.10 \ g \ water}

x = 35.16 \ g \ salt

So, the solubility of the salt is 35.16 (g/100 g of water).

<h3>b.</h3>

Using the rule of three, we got:

\frac{3.20 \g \ salt}{9.10 \ g \ water} = \frac{25 \ g \ salt}{x \ g \ water}

Working it a little this gives us :

x = \frac{25 \ g \ salt}{ \frac{3.20 \g \ salt}{9.10 \ g \ water}}

x = 71.09 g \ water

So, it would take 71.09 grams of water to dissolve 25 grams of salt.

<h3>C.</h3>

Using the rule of three, we got that for 15.0 grams of water the salt dissolved will be:

\frac{3.20 \g \ salt}{9.10 \ g \ water} = \frac{x \ g \ salt}{15.0 \ g \ water}

Working it a little this gives us :

x = 15.0 \ g \ water * \frac{3.20 \g \ salt}{9.10 \ g \ water}

x = 5.27\ g \ salt

This is the salt dissolved

The percentage of salt dissolved is:

percentage \ salt \ dissolved = 100 \% * \frac{g \ salt \ dissolved}{g \ salt}

percentage \ salt \ dissolved = 100 \% * \frac{ 5.27\ g \ salt }{ 10.0 \ g \ salt}

percentage \ salt \ dissolved = 52.7 \%

3 0
4 years ago
scott and jafar are ready to work a problem. in this simulation, assume the coordinates of the points are as follows. a (0 s, 30
max2010maxim [7]

Answer:

Explanation:

point a represents time 0 and position coordinate 30

point b represents time 10 s , and position coordinate 50 m .

time elapsed = 10 - 0 = 10 s .

displacement = 50 m - 30 m

= 20 m

average velocity = displacement / time elapsed

= 20 / 10

= 2 m /s .

7 0
4 years ago
Considering this analogy (current = rate that heat flows through a window, and voltage = temperature difference across the windo
erastovalidia [21]

Answer:

Explained

Explanation:

Resistance R in a current flow through an object is given by

R= \frac{\rho L}{A}

ρ = resistivity of the material

L= length of the object

A=  area of cross section

clearly resistance is directly dependent on length of the object.This means greater the length larger will be resistance to current.

thermal resistance R_th is given by

R_{th} = \frac{L}{KA}

L= length of the object

A=  area of cross section

K = Conductivity of the material

thermal resistance is also is directly dependent on length of the object.This means greater the length larger will be resistance to current.

8 0
4 years ago
Read 2 more answers
Please answer this fast <br>I 'll marks them brainliest answer <br>​
Reptile [31]

answer

64 is C (c) 1-Bromo-3-methylbutane

63 is D

i is secondary ii is primary

8 0
3 years ago
What phylum do animals with backbones belong to?
kykrilka [37]
They belong to the kingdom of Chordata
5 0
3 years ago
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