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2 years ago

Which is more likely to melt a cup of ice - a spoonful of boiling water, or a cup of room-temperature

Chemistry

1 answer:

miskamm [114]2 years ago

3 0

Answer:

boiling water

Explanation:

its hotter

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The table compares some characteristics of two atoms.

11Alexandr11 [23.1K]

Answer:

Atoms X and Atom Y are isotope is right answer

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2 years ago

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Why do you need many different indicators to span the entire ph spectrum?

marin [14]

The answer is each indicator has a narrow range. We need many different indicators to span the entire ph spectrum because each indicator has a narrow range.

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2 years ago

Write the oxidation number for the following elements: for brainliest answer

ollegr [7]

Explanation:

Here's an oxidation chart to help

..................

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2 years ago

A hardware salesman measures the mass of a box containing

sattari [20]

Step $1$

find the mass of a single washer

Divide the total mass by the number of washers

$\frac{0.4168}{1000} =0.0004168\ Kg$

$0.0004168kg=4.168*10^{-4} kg$

Step $2$

Convert kg to mg

we know that

$1 kg=1*10^{6} mg$

$4.168*10^{-4}*10^{6} =4.168*10^{2}mg=416.8 mg$

therefore

the answer is

$416.8 mg$

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3 years ago

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A 215-g sample of copper metal at some temperature is added to 26.6 g of water. The initial water temperature is 22.22 oC, and t

andrezito [222]

The initial temperature of the copper metal was 27.38 degrees.

Explanation:

Data given:

mass of the copper metal sample = 215 gram

mass of water = 26.6 grams

Initial temperature of water = 22.22 Degrees

Final temperature of water = 24.44 degrees

Specific heat capacity of water = 0.385 J/g°C

initial temperature of copper material , Ti=?

specific heat capacity of water = 4.186 joule/gram °C

from the principle of:

heat lost = heat gained

heat gained by water is given by:

q water = mcΔT

Putting the values in the equation:

qwater = 26.6 x 4.186 x (2.22)

qwater = 247.19 J

qcopper = 215 x 0.385 x (Ti-24.4)

= 82.77Ti - 2019.71

Now heat lost by metal = heat gained by water

82.77Ti - 2019.71 = 247.19

Ti = 27.38 degrees

8 0

3 years ago