1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Pachacha [2.7K]
3 years ago
15

Write balanced molecular equation for the reaction between nitric acid and calcium hydroxide.

Chemistry
1 answer:
serg [7]3 years ago
7 0
2HNO3 + Ca(OH)2 --> 2HOH + Ca(NO3)2

You might be interested in
How many moles of carbon dioxide are present in 14g of co2
Tomtit [17]

0.32 moles

You just do 14/ 44.01 (the atomic mass of carbon + oxygen's atomic massX2)

8 0
3 years ago
Precision Problems:
Lorico [155]

Answer:

Precision = 2.70 \± 0.1\ cm

Explanation:

Given

The data in the table

Required

Follow the steps appended to the question;

Step 1: Calculate the Mean or Average

Mean = Summation of lengths divided by number of teams;

Mean = \frac{2.65 + 2.75 + 2.80 + 2.77 + 2.60 + 2.65 + 2.68}{7}\ cm

Mean = \frac{18.9}{7}\ cm

Mean = 2.70\ cm

Step 2: Get The Range

Range = Highest - Lowest

Range = 2.80cm - 2.60cm

Range = 0.2\ cm

Step 3: Divide Range by 2

Approximate\ Range = \frac{1}{2}Range

Approximate\ Range = \frac{1}{2} * 0.2\ cm

Approximate\ Range = 0.1\ cm

Step 4: Determine the Precision

Precision = Average \± Approximate\ Range

Substitute 2.70 for Average and 0.1 for Approximate Range

Precision = 2.70 \± 0.1\ cm

4 0
3 years ago
How do i found out how animals gain energy and from where​
otez555 [7]

Answer:

Animals gain energy from the food they eat. Some animals eat plants while others eat other animals. This is passing of energy from the sun to plants to animal to other animals is called a food chain

6 0
3 years ago
What is the method of harvesting trees where mature trees are left intact that
Arte-miy333 [17]
Hey day is the method of harvesting tress.
8 0
2 years ago
A wooden artifact from a Chinese temple has a 14C activity of 42.8 counts per minute as compared with an activity of 58.2 counts
Arlecino [84]

Answer : The age of the artifact is, 2.54\times 10^3\text{ years}

Explanation :

Half-life = 5715 years

First we have to calculate the rate constant, we use the formula :

k=\frac{0.693}{5715\text{ years}}

k=1.21\times 10^{-4}\text{ years}^{-1}

Now we have to calculate the time taken to decay.

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant

t = time taken by sample = ?

a = initial activity of the reactant  = 58.2 counts per minute

a - x = activity left after decay process  = 42.8 counts per minute

Now put all the given values in above equation, we get

t=\frac{2.303}{1.21\times 10^{-4}}\log\frac{58.2}{42.8}

t=2540.5\text{ years}=2.54\times 10^3\text{ years}

Therefore, the age of the artifact is, 2.54\times 10^3\text{ years}

4 0
3 years ago
Other questions:
  • What is the buffer component ratio, (bro-)/(hbro) of a bromate buffer that has a ph of 8.08. ka of hbro is 2.3 x 10-9?
    12·1 answer
  • Acetylene gas (c2h2) reacts with oxygen gas (o2) to produce carbon dioxide (co2) and water vapor (h2o). how many liters of c2h2
    12·2 answers
  • What is the guiding formula for combustion reactions​
    10·1 answer
  • Which condition In a nebula would prevent nuclear fusion
    11·2 answers
  • What is volcanoes be my friend
    7·2 answers
  • What is the molarity of a solution made by mixing 50.0 g of magnesium nitrate, Mg(NO3)2, in enough water to make 250. mL of solu
    5·1 answer
  • 2H20(l) —&gt; 2H2(g) + O2(g)<br><br> help me pls
    9·1 answer
  • Give the chemical formulas for (a) silicon tetrabromide, (b) disulfur dichloride, (c) diphosphorus hexaoxide.
    5·1 answer
  • _______________________________________________
    11·1 answer
  • Help me pleaseeeeeeee​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!