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3 years ago

Ca: alkali metal alkaline earth metal The answer is alkaline earth metal!

Chemistry

2 answers:

Alecsey [184]3 years ago

7 0

Answer:

alkaline earth metal

it's because calcium in the periodic table is located in group 2

frozen [14]3 years ago

6 0

Answer:

The answer is alkaline earth metal!

Explanation:

points man

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Describe in detail how you would determine the density of a potato that is too large to fit into a graduated cylinder. (Hint: Th

Mnenie [13.5K]

Answer:

The density of a potato is $\dfrac{M}{V'}$

Explanation:

Given that,

A potato that is too large to fit into a graduated cylinder.

Let us consider the mass of potato is M and volume of entire potato is V'.

The volume of water is V.

We know that,

Density :

The density is equal to the mass divided by volume.

In mathematically,

$\rho=\dfrac{m}{V}$

Where, m = mass

V = volume

We need to calculate the volume of potato

Using formula for volume

$V'=V''-V$

Where, V' = volume of potato

V''=Volume of combine water and potato

V = volume of water

We need to determine the density of a potato

Using formula of density

$Density\ of\ potato=\dfrac{Mass\ of\ potato}{volume\ of\ entire\ potato}$

Put the value into the formula

$\rho=\dfrac{M}{V'}$

Hence, The density of a potato is $\dfrac{M}{V'}$

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3 years ago

A piece of metal with a mass of 23.2 g at 120.1oC is placed in a styrofoam cup containing 35.0 g of water at 22.2oC. Once the sy

earnstyle [38]

Answer:

0.8797 J/g oC

Explanation:

use mcAT=mcaT

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1 year ago

Bethany has a fish tank at her house. She uses the following data table to keep track of the nitrate and phosphate levels in the

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3 years ago

Read 2 more answers

75 mL of water is added to a 360 mL solution of acetic acid with a concentration of 0.87 M. Determine the molarity of the new so

kramer

Answer:

The molarity of the new solution is 0.72 M

Explanation:

Step 1: Data given

Volume of the original solution = 360 mL =.360 L

Molarity = 0.87 M

We add 75 mL = 0.075 L

Step 2: Calculate moles

Moles = molarity * volume

Moles = 0.87 M * 0.360 L

Moles = 0.3132 moles

Step 3: Calculate new molarity

The number of moles stays constant

Molarity = moles / volume

Molarity = 0.3132 moles / (0.36+0.075)

Molarity = 0.3132 moles / 0.435 L

Molarity = 0.72 M

The molarity of the new solution is 0.72 M

3 0

3 years ago

The rate constant for a certain reaction is k = 5.40×10−3 s−1 . If the initial reactant concentration was 0.100 M, what will the

IceJOKER [234]

Answer : The concentration after 17.0 minutes will be, $4.05\times 10^{-4}M$

Explanation :

The expression for first order reaction is:

$[C_t]=[C_o]e^{-kt}$

where,

$[C_t]$ = concentration at time 't' (final) = ?

$[C_o]$ = concentration at time '0' (initial) = 0.100 M

k = rate constant = $5.40\times 10^{-3}s^{-1}$

t = time = 17.0 min = 1020 s (1 min = 60 s)

Now put all the given values in the above expression, we get:

$[C_t]=(0.100)\times e^{-(5.40\times 10^{-3})\times (1020)}$

$[C_t]=4.05\times 10^{-4}M$

Thus, the concentration after 17.0 minutes will be, $4.05\times 10^{-4}M$

4 0

3 years ago