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Evgesh-ka [11]
2 years ago
12

Can you write the answer for lot of points ​

Chemistry
2 answers:
ruslelena [56]2 years ago
4 0

\large\orange{\sf{Given:}}

<h3>Work (W)=2400 Joules</h3><h3>Distance(D)=6 metres</h3>

\large\blue{\sf{To\:find:}}

<h3>Force=?</h3>

\large\red{\sf{Solution:}}

  • The formula we are using to solve is:

\begin{gathered}\\ \sf\longmapsto Work=Force×Distance\end{gathered}

\begin{gathered}\\ \sf\longmapsto 2400=Force×6\end{gathered}

\begin{gathered}\\ \sf\longmapsto Force=\frac{2400}{6}\end{gathered}

\begin{gathered}\\ \sf\longmapsto Force=\cancel{\dfrac{2400}{6}}\end{gathered}

\begin{gathered}\\ \sf\longmapsto Force=400N\end{gathered}

Ostrovityanka [42]2 years ago
4 0
  • Work=2400J
  • Displacement=6m

\\ \sf\longmapsto Work=Force\times Displacement

\\ \sf\longmapsto Force=\dfrac{Work}{Displacement}

\\ \sf\longmapsto Force=\dfrac{2400}{6}

\\ \sf\longmapsto Force=400N

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Chandra wants to know how many moles are contained in 150.0 g ccl4 (carbon tetrachloride). what quantity of ccl4 should she use
Fynjy0 [20]

The quantity of carbon tetrachloride, CCl₄ she will use to make her conversion is molar mass

<h3>Description of mole </h3>

The mole of a substance is related to it's mass and molar mass according to the following equation:

Mole = mass / molar mass

<h3>How to determine the mole of CCl₄</h3>
  • Mass of CCl₄ = 30 g
  • Molar mass of CCl₄ = 12 + (35.5×4) = 154 g/mol
  • Mole of CCl₄ =?

Mole = mass / molar mass

Mole of CCl₄ = 150 / 154

Mole of CCl₄ = 0.974 mole

Thus, we can see that the molar mass of CCl₄ is needed to obtain the number of mole.

Learn more about mole:

brainly.com/question/13314627

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8 0
2 years ago
Elements in the same group/family of the periodic table are similar in what way?
Jlenok [28]
Elements in the same group<span> in the </span>periodic table<span> have </span>similar<span> chemical properties. This is because their atoms have the </span>same<span> number of electrons in the highest occupied energy level. </span>Group<span> 1 </span>elements<span> are reactive metals called the alkali metals.</span>Group<span> 0 </span>elements<span> are unreactive non-metals called the noble gases.</span>
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3 years ago
Read 2 more answers
Which of these substances, when dissolved in water, is a strong electrolyte? which of these substances, when dissolved in water,
Norma-Jean [14]
<span>Option C. It is sodium nitrate because it is a strong electrolyte that comes from a strong acid (HNO3) and a strong base (KOH). It becomes a strong electrolyte when it dissolves in water, its formula is NaNO3, which is a compound that forms nitrate together with potassium nitrate and is obtained by chemical synthesis.</span>
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Why might a scientist repeat an experiment if she did not make a mistake in the first one? A) Scientists who repeat experiments
9966 [12]

Answer:

The correct answer is B) it helps to ensure the result are consistent and repeatable.

Explanation:

Scientist generally repeat an experiment if he or she did not make a mistake in the first one to compare the results of two experiment, if there is no difference in the result or values obtainted from the observation of two experiment. he or she become sure that experiment was done in a right way because if there is some error made when experiment was carried out then the result of two same experiment would be different.

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3 years ago
Write the empirical formula for at least four ionic compounds that could be formed from the following ions:
CaHeK987 [17]

Answer:

Fe(CN)₂,  FeCO₃,  Pb(CN)₄,  Pb(CO₃)₂

Explanation:

Cations (positively charged ions) can only form ionic bonds with anions (negatively charged ions). However, you can't just simply put one cation and one anion together to form a compound. Each compound needs to been neutral, or have an overall charge of 0. When cations and anions do not have charges that perfectly cancel, you need to modify the amount of each ion in the compound.

1.) Fe(CN)₂
-----> Fe²⁺ and CN⁻

-----> +2 + (-1) + (-1) = 0

2.) FeCO₃

-----> Fe²⁺ and CO₃²⁻

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3.)  Pb(CN)₄

-----> Pb⁴⁺ and CN⁻

-----> +4 + (-1) + (-1) + (-1) + (-1) = 0

4.) Pb(CO₃)₂

-----> Pb⁴⁺ and CO₃²⁻

-----> +4 +(-2) + (-2) = 0

5 0
2 years ago
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